HORSEY, Justice (for the majority):

This appeal from the Court of Chancery involves a class action brought by shareholders of the defendant against the defendant members of the Board of Directors.

Following trial, the former Chancellor granted judgment for the defendant directors.

Speaking for the majority of the Court, we reverse and direct that judgment be entered in favor of the plaintiffs and against the defendant directors for the fair value of the plaintiffs' stockholdings in Trans Union, in accordance with Weinberger v. UOP, Inc., Del.Supr., 457 A.2d 701 (1983).

We hold: (1) that the Board's decision, reached September 20, 1980, to approve the proposed cash-out merger was not the product of an informed business judgment; (2) that the Board's subsequent efforts to amend the Merger Agreement and take other curative action were ineffectual, both legally and factually; and (3) that the Board did not deal with complete candor with the stockholders by failing to disclose all material facts, which they knew or should have known, before securing the stockholders' approval of the merger.

I.

Trans Union was a publicly-traded, diversified holding company, the principal earnings of which were generated by its railcar leasing business. During the period here involved, the Company had a cash flow of hundreds of millions of dollars annually. However, the Company had difficulty in generating sufficient taxable income to offset increasingly large investment tax credits (ITCs).

On August 27, 1980, Van Gorkom met with Senior Management of Trans Union. Van Gorkom reported on his lobbying efforts in Washington and his desire to find a solution to the tax credit problem more permanent than a continued program of acquisitions. Various alternatives were suggested and discussed preliminarily, including the sale of Trans Union to a company with a large amount of taxable income.

Donald Romans, Chief Financial Officer of Trans Union, stated that his department had done a “very brief bit of work on the possibility of a leveraged buy-out.” The work consisted of a “preliminary study” of the cash which could be generated by the Company if it participated in a leveraged buy-out.

On September 5, at another Senior Management meeting which Van Gorkom attended, Romans again brought up the idea of a leveraged buy-out. Romans and Bruce S. Chelberg, President and Chief Operating Officer of Trans Union, had been working on the matter in preparation for the meeting. According to Romans: They did not “come up” with a price for the Company. They merely “ran the numbers” at $50 a share and at $60 a share with the “rough form” of their cash figures at the time. Their “figures indicated that $50 would be very easy to do but $60 would be very difficult to do under those figures.”

At this meeting, Van Gorkom stated that he would be willing to take $55 per share for his own 75,000 shares. He vetoed the suggestion of a leveraged buy-out by Management, however, as involving a potential conflict of interest for Management. Van Gorkom, a certified public accountant and lawyer, had been an officer of Trans Union *866 for 24 years, its Chief Executive Officer for more than 17 years, and Chairman of its Board for 2 years. It is noteworthy in this connection that he was then approaching 65 years of age and mandatory retirement.

Van Gorkom decided to meet with Jay A. Pritzker, a well-known corporate takeover specialist and a social acquaintance. However, rather than approaching Pritzker simply to determine his interest in acquiring Trans Union, Van Gorkom assembled a proposed per share price for sale of the Company and a financing structure by which to accomplish the sale. Van Gorkom did so without consulting either his Board or any members of Senior Management except one: Carl Peterson, Trans Union's Controller. Telling Peterson that he wanted no other person on his staff to know what he was doing, but without telling him why, Van Gorkom directed Peterson to calculate the feasibility of a leveraged buy-out at an assumed price per share of $55. Apart from the Company's historic stock market price, and Van Gorkom's long association with Trans Union, the record is devoid of any competent evidence that $55 represented the per share intrinsic value of the Company.

Having thus chosen the $55 figure, based solely on the availability of a leveraged buy-out, Van Gorkom multiplied the price per share by the number of shares outstanding to reach a total value of the Company of $690 million. Van Gorkom told Peterson to use this $690 million figure and to assume a $200 million equity contribution by the buyer. Based on these assumptions, Van Gorkom directed Peterson to determine whether the debt portion of the purchase price could be paid off in five years or less if financed by Trans Union's cash flow as projected in the Five Year Forecast, and by the sale of certain weaker divisions identified in a study done for Trans Union by the Boston Consulting Group (“BCG study”). Peterson reported that, of the purchase price, approximately $50-80 million would remain outstanding after five years. Van Gorkom was disappointed, but decided to meet with Pritzker nevertheless.

Van Gorkom arranged a meeting with Pritzker at the latter's home on Saturday, September 13, 1980. Van Gorkom prefaced his presentation by stating to Pritzker: “Now as far as you are concerned, I can, I think, show how you can pay a substantial premium over the present stock price and pay off most of the loan in the first five years.”

Van Gorkom then reviewed with Pritzker his calculations based upon his proposed price of $55 per share. Although Pritzker mentioned $50 as a more attractive figure, no other price was mentioned. However, Van Gorkom stated that to be sure that $55 was the best price obtainable, Trans Union should be free to accept any better offer. Pritzker demurred, stating that his organization would serve as a “stalking horse” for an “auction contest” only if Trans Union would permit Pritzker to buy 1,750,000 shares of Trans Union stock at market price which Pritzker could then sell to any higher bidder.

On Monday, September 15, Pritzker advised Van Gorkom that he was interested in the $55 cash-out merger proposal and requested more information on Trans Union. Van Gorkom was “astounded that events were moving with such amazing rapidity.”

On Thursday, September 18, Van Gorkom met again with Pritzker. At that time, Van Gorkom knew that Pritzker intended to make a cash-out merger offer at Van Gorkom's proposed $55 per share. Pritzker instructed his attorney, a merger and acquisition specialist, to begin drafting merger documents. There was no further discussion of the $55 price. However, the number of shares of Trans Union's treasury stock to be offered to Pritzker was negotiated down to one million shares; the price was set at $38-75 cents above the per share price at the close of the market on September 19. At this point, Pritzker insisted that the Trans Union Board act on his merger proposal within the next three days, stating to Van Gorkom: “We have to have a decision by no later than Sunday [evening, September 21] before the opening of the English stock exchange on Monday morning.”

On Friday, September 19, Van Gorkom, Chelberg, and Pritzker consulted with Trans Union's lead bank regarding the financing of Pritzker's purchase of Trans Union. The bank indicated that it could form a syndicate of banks that would finance the transaction.

On Friday, September 19, Van Gorkom called a special meeting of the Trans Union Board for noon the following day. He also called a meeting of the Company's Senior Management to convene at 11:00 a.m., prior to the meeting of the Board.

Of those present at the Senior Management meeting on September 20, only Chelberg and Peterson had prior knowledge of Pritzker's offer. Van Gorkom disclosed the offer and described its terms, but he furnished no copies of the proposed Merger Agreement.

Senior Management's reaction to the Pritzker proposal was completely negative. No member of Management, except Chelberg and Peterson, supported the proposal. Romans objected to the price as being too low; he was critical of the timing and suggested that consideration should be given to the adverse tax consequences of an all-cash deal for low-basis shareholders; and he took the position that the agreement to sell Pritzker one million newly-issued shares at market price would inhibit other offers, as would the prohibitions against soliciting bids and furnishing inside information*868 to other bidders. Nevertheless, Van Gorkom proceeded to the Board meeting as scheduled without further delay.

Van Gorkom began the Special Meeting of the Board with a twenty-minute oral presentation. Copies of the proposed Merger Agreement were delivered too late for study before or during the meeting. He reviewed the Company's ITC and depreciation problems and the efforts theretofore made to solve them. He discussed his initial meeting with Pritzker and his motivation in arranging that meeting. Van Gorkom did not disclose to the Board, however, the methodology by which he alone had arrived at the $55 figure, or the fact that he first proposed the $55 price in his negotiations with Pritzker.

Van Gorkom outlined the terms of the Pritzker offer as follows: Pritzker would pay $55 in cash for all outstanding shares of Trans Union stock upon completion of which Trans Union would be merged into New T Company, a subsidiary wholly-owned by Pritzker and formed to implement the merger; for a period of 90 days, Trans Union could receive, but could not actively solicit, competing offers; the offer had to be acted on by the next evening, Sunday, September 21; Trans Union could only furnish to competing bidders published information, and not proprietary information; the offer was subject to Pritzker obtaining the necessary financing by October 10, 1980; if the financing contingency were met or waived by Pritzker, Trans Union was required to sell to Pritzker one million newly-issued shares of Trans Union at $38 per share.

Van Gorkom took the position that putting Trans Union “up for auction” through a 90-day market test would validate a decision by the Board that $55 was a fair price. He told the Board that the “free market will have an opportunity to judge whether $55 is a fair price.” Van Gorkom framed the decision before the Board not as whether $55 per share was the highest price that could be obtained, but as whether the $55 price was a fair price that the stockholders should be given the opportunity to accept or reject.

Attorney Brennan advised the members of the Board that they might be sued if they failed to accept the offer and that a fairness opinion was not required as a matter of law.

Romans attended the meeting as chief financial officer of the Company. Romans testified:

I told the Board that the study ran the numbers at 50 and 60, and then the subsequent study at 55 and 65, and that was not the same thing as saying that I have a valuation of the company at X dollars. But it was a way-a first step towards reaching that conclusion. #p#副标题#e#

Romans told the Board that, in his opinion, $55 was “in the range of a fair price,” but “at the beginning of the range.”

Chelberg, Trans Union's President, supported Van Gorkom's presentation and representations.

The Board meeting of September 20 lasted about two hours. Based solely upon Van Gorkom's oral presentation, Chelberg's supporting representations, Romans' oral statement, Brennan's legal advice, and their knowledge of the market history of the Company's stock, the directors approved the proposed Merger Agreement. However, the Board later claimed to have attached two conditions to its acceptance: (1) that Trans Union reserved the right to accept any better offer that was made during the market test period; and (2) that Trans Union could share its proprietary information with any other potential bidders. While the Board now claims to have reserved the right to accept any better offer received after the announcement of the Pritzker agreement (even though the minutes of the meeting do not reflect this), it is undisputed that the Board did not reserve the right to actively solicit alternate offers.

The Merger Agreement was executed by Van Gorkom during the evening of September 20 at a formal social event that he hosted for the opening of the Chicago Lyric Opera. Neither he nor any other director read the agreement prior to its signing and delivery to Pritzker.

On Monday, September 22, the Company issued a press release announcing that Trans Union had entered into a “definitive” Merger Agreement with an affiliate of the Marmon Group, Inc., a Pritzker holding company. Within 10 days of the public announcement, dissent among Senior Management over the merger had become widespread. Faced with threatened resignations of key officers, Van Gorkom met with Pritzker who agreed to several modifications of the Agreement. Pritzker was willing to do so provided that Van Gorkom could persuade the dissidents to remain on the Company payroll for at least six months after consummation of the merger.

Van Gorkom reconvened the Board on October 8 and secured the directors' approval of the proposed amendments-sight unseen. The Board also authorized the employment of Salomon Brothers, its investment*870 banker, to solicit other offers for Trans Union during the proposed “market test” period.

It was not until the following day, October 10, that the actual amendments to the Merger Agreement were prepared by Pritzker and delivered to Van Gorkom for execution. As will be seen, the amendments were considerably at variance with Van Gorkom's representations of the amendments to the Board on October 8; and the amendments placed serious constraints on Trans Union's ability to negotiate a better deal and withdraw from the Pritzker agreement. Nevertheless, Van Gorkom proceeded to execute what became the October 10 amendments to the Merger Agreement without conferring further with the Board members and apparently without comprehending the actual implications of the amendments.

Salomon Brothers' efforts over a three-month period from October 21 to January 21 produced only one serious suitor for Trans Union-General Electric Credit Corporation (“GE Credit”), a subsidiary of the General Electric Company. However, GE Credit was unwilling to make an offer for Trans Union unless Trans Union first rescinded its Merger Agreement with Pritzker. When Pritzker refused, GE Credit terminated further discussions with Trans Union in early January.

In the meantime, in early December, the investment firm of Kohlberg, Kravis, Roberts & Co. (“KKR”), the only other concern to make a firm offer for Trans Union, withdrew its offer under circumstances hereinafter detailed.

On December 19, this litigation was commenced and, within four weeks, the plaintiffs had deposed eight of the ten directors of Trans Union, including Van Gorkom, Chelberg and Romans, its Chief Financial Officer. On January 21, Management's Proxy Statement for the February 10 shareholder meeting was mailed to Trans Union's stockholders. On January 26, Trans Union's Board met and, after a lengthy meeting, voted to proceed with the Pritzker merger. The Board also approved for mailing, “on or about January 27,” a Supplement to its Proxy Statement. The Supplement purportedly set forth all information relevant to the Pritzker Merger Agreement, which had not been divulged in the first Proxy Statement.

On February 10, the stockholders of Trans Union approved the Pritzker merger proposal. Of the outstanding shares, 69.9% were voted in favor of the merger; 7.25% were voted against the merger; and 22.85% were not voted.

II.

We turn to the issue of the application of the business judgment rule to the September 20 meeting of the Board.

The Court of Chancery concluded from the evidence that the Board of Directors' approval of the Pritzker merger proposal fell within the protection of the business judgment rule. The Court ruled:

... that given the market value of Trans Union's stock, the business acumen of the members of the board of Trans Union, the substantial premium over market offered by the Pritzkers and the ultimate effect on the merger price provided by the prospect of other bids for the stock in question, that the board of directors of Trans Union did not act recklessly or improvidently in determining on a course of action which they believed to be in the best interest of the stockholders of Trans Union.

The Court's explicit finding was that Trans Union's Board was “free to turn down the Pritzker proposal” not only on September 20 but also on October 8, 1980 and on January 26, 1981. The Court's implied, subordinate findings were: (1) that no legally binding agreement was reached by the parties until January 26; and (2) that if a higher offer were to be forthcoming, the market test would have produced it, and Trans Union would have been contractually free to accept such higher offer. However, the Court offered no factual basis or legal support for any of these findings; and the record compels contrary conclusions.

Under Delaware law, the business judgment rule is the offspring of the fundamental principle, codified in 8 Del.C. § 141(a), that the business and affairs of a Delaware corporation are managed by or under its board of directors. The rule itself “is a presumption that in making a business decision, the directors of a corporation acted on an informed basis, in good faith and in the honest belief that the action taken was in the best interests of the company.” Aronson, supra at 812. Thus, the party attacking a board decision as uninformed must rebut the presumption that its business judgment was an informed one.

The determination of whether a business judgment is an informed one turns on whether the directors have informed themselves “prior to making a business decision, of all material information reasonably available to them.” Id.

Under the business judgment rule there is no protection for directors who have made “an unintelligent or unadvised judgment.” Mitchell v. Highland-Western Glass, Del.Ch., 167 A. 831, 833 (1933). We think the concept of gross negligence is also the proper standard for determining whether a business judgment reached by a board of directors was an informed one.

In the specific context of a proposed merger of domestic corporations, a director has a duty under 8 Del.C. § 251(b), along with his fellow directors, to act in an informed and deliberate manner in determining whether to approve an agreement of merger before submitting the proposal to the stockholders. Certainly in the merger context, a director may not abdicate that duty by leaving to the shareholders alone the decision to approve or disapprove the agreement.

III.

The question of whether the directors reached an informed business judgment in agreeing to sell the Company, pursuant to the terms of the September 20 Agreement presents, in reality, two questions: (A) whether the directors reached an informed business judgment on September 20, 1980; and (B) if they did not, whether the directors' actions taken subsequent to September 20 were adequate to cure any infirmity in their action taken on September 20.

-A-

On the record before us, we must conclude that the Board of Directors did not reach an informed business judgment on September 20, 1980 in voting to “sell” the Company for $55 per share pursuant to the Pritzker cash-out merger proposal.

The directors (1) did not adequately inform themselves as to Van Gorkom's role in forcing the “sale” of the Company and in establishing the per share purchase price; (2) were uninformed as to the intrinsic value of the Company; and (3) given these circumstances, at a minimum, were grossly negligent in approving the “sale” of the Company upon two hours' consideration, without prior notice, and without the exigency of a crisis or emergency.

As has been noted, the Board based its September 20 decision to approve the cash-out merger primarily on Van Gorkom's representations. None of the directors, other than Van Gorkom and Chelberg, had any prior knowledge that the purpose of the meeting was to propose a cash-out merger of Trans Union. No members of Senior Management were present, other than Chelberg, Romans and Peterson; and the latter two had only learned of the proposed sale an hour earlier.

Without any documents before them concerning the proposed transaction, the members of the Board were required to rely entirely upon Van Gorkom's 20-minute oral presentation of the proposal. No written summary of the terms of the merger was presented; the directors were given no documentation to support the adequacy of $55 price per share for sale of the Company; and the Board had before it nothing more than Van Gorkom's statement of his understanding of the substance of an agreement which he admittedly had never read, nor which any member of the Board had ever seen.

Under 8 Del.C. § 141(e), “directors are fully protected in relying in *875 good faith on reports made by officers.” Michelson v. Duncan, Del.Ch., 386 A.2d 1144, 1156 (1978); aff'd in part and rev'd in part on other grounds, Del.Supr., 407 A.2d 211 (1979). The term “report” has been liberally construed to include reports of informal personal investigations by corporate officers. However, there is no evidence that any “report,” as defined under § 141(e), concerning the Pritzker proposal, was presented to the Board on September 20. Van Gorkom's oral presentation of his understanding of the terms of the proposed Merger Agreement, which he had not seen, and Romans' brief oral statement of his preliminary study regarding the feasibility of a leveraged buy-out of Trans Union do not qualify as § 141(e) “reports” for these reasons: The former lacked substance because Van Gorkom was basically uninformed as to the essential provisions of the very document about which he was talking. Romans' statement was irrelevant to the issues before the Board since it did not purport to be a valuation study. At a minimum for a report to enjoy the status conferred by § 141(e), it must be pertinent to the subject matter upon which a board is called to act, and otherwise be entitled to good faith, not blind, reliance.

The defendants rely on the following factors to sustain the Trial Court's finding that the Board's decision was an informed one: (1) the magnitude of the premium or spread between the $55 Pritzker offering price and Trans Union's current market price of $38 per share; (2) the amendment of the Agreement as submitted on September 20 to permit the Board to accept any better offer during the “market test” period; (3) the collective experience and expertise of the Board's “inside” and “outside” directors; and (4) their reliance on Brennan's legal advice that the directors might be sued if they rejected the Pritzker proposal.

(1)

A substantial premium may provide one reason to recommend a merger, but in the absence of other sound valuation information, the fact of a premium alone does not provide an adequate basis upon which to assess the fairness of an offering price.

The record is clear that before September 20, Van Gorkom and other members of Trans Union's Board knew that the market had consistently undervalued the worth of Trans Union's stock, despite steady increases in the Company's operating income in the seven years preceding the merger. The Board related this occurrence in large part to Trans Union's inability to use its ITCs as previously noted.

The parties do not dispute that a publicly-traded stock price is solely a measure of the value of a minority position and, thus, market price represents only the value of a single share. Nevertheless, on September 20, the Board assessed the adequacy of the premium over market, offered by Pritzker, solely by comparing it with Trans Union's current and historical stock price.

Indeed, as of September 20, the Board had no other information on which to base a determination of the intrinsic value of Trans Union as a going concern. As of September 20, the Board had made no evaluation of the Company designed to value the entire enterprise, nor had the Board ever previously considered selling the Company or consenting to a buy-out merger.

The record also establishes that the Board accepted without scrutiny Van Gorkom's representation as to the fairness of the $55 price per share for sale of the Company-a subject that the Board had never previously considered. The Board thereby failed to discover that Van Gorkom had suggested the $55 price to Pritzker and, most crucially, that Van Gorkom had arrived at the $55 figure based on calculations designed solely to determine the feasibility of a leveraged buy-out. No questions were raised either as to the tax implications of a cash-out merger or how the price for the one million share option granted Pritzker was calculated.

None of the directors, Management or outside, were investment bankers or financial analysts. #p#副标题#e#

(2)

This brings us to the post-September 20 “market test” upon which the defendants ultimately rely to confirm the reasonableness of their September 20 decision to accept the Pritzker proposal. In this connection, the directors present a two-part argument: (a) that by making a “market test” of Pritzker's $55 per share offer a condition of their September 20 decision to accept his offer, they cannot be found to have acted impulsively or in an uninformed manner on September 20; and (b) that the adequacy of the $17 premium for sale of the Company was conclusively established over the following 90 to 120 days by the most reliable evidence available-the marketplace.

Again, the facts of record do not support the defendants' argument. There is no evidence: (a) that the Merger Agreement was effectively amended to give the Board freedom to put Trans Union up for auction sale to the highest bidder; or (b) that a public auction was in fact permitted to occur.

Van Gorkom states that the Agreement as submitted incorporated the ingredients for a market test by authorizing Trans Union to receive competing offers over the next 90-day period. However, he concedes that the Agreement barred Trans Union from actively soliciting such offers and from furnishing to interested parties any information about the Company other than that already in the public domain.

The only clause in the Agreement as finally executed to which the defendants can point as “keeping the door open” is the following underlined statement found in subparagraph (a) of section 2.03 of the Merger Agreement as executed:

The Board of Directors shall recommend to the stockholders of Trans Union that they approve and adopt the Merger Agreement (‘the stockholders' approval’) and to use its best efforts to obtain the requisite votes therefor. GL acknowledges that Trans Union directors may have a competing fiduciary obligation to the shareholders under certain circumstances.

Clearly, this language on its face cannot be construed as incorporating either the right to accept a better offer or the right to distribute proprietary information to third parties.

(3)

The directors' unfounded reliance on both the premium and the market test as the basis for accepting the Pritzker proposal undermines the defendants' remaining contention that the Board's collective experience and sophistication was a sufficient basis for finding that it reached its September 20 decision with informed, reasonable deliberation.

-B-

We now examine the Board's post-September 20 conduct for the purpose of determining first, whether it was informed and not grossly negligent; and second, if informed, whether it was sufficient to legally rectify and cure the Board's derelictions of September 20.

(1)


First, as to the Board meeting of October 8: Its purpose arose in the aftermath of the September 20 meeting: (1) the September 22 press release announcing that Trans Union “had entered into definitive agreements to merge with an affiliate of Marmon Group, Inc.;” and (2) Senior Management's ensuing revolt.


Trans Union's press release stated:




FOR IMMEDIATE RELEASE:




CHICAGO, IL-Trans Union Corporation announced today that it had entered into definitive agreements to merge with an affiliate of The Marmon Group, Inc. in a transaction whereby Trans Union stockholders would receive $55 per share in cash for each Trans Union share held. The Marmon Group, Inc. is controlled by the Pritzker family of Chicago.




The merger is subject to approval by the stockholders of Trans Union at a special meeting expected to be held *882 sometime during December or early January.




Until October 10, 1980, the purchaser has the right to terminate the merger if financing that is satisfactory to the purchaser has not been obtained, but after that date there is no such right.




In a related transaction, Trans Union has agreed to sell to a designee of the purchaser one million newly-issued shares of Trans Union common stock at a cash price of $38 per share. Such shares will be issued only if the merger financing has been committed for no later than October 10, 1980, or if the purchaser elects to waive the merger financing condition. In addition, the New York Stock Exchange will be asked to approve the listing of the new shares pursuant to a listing application which Trans Union intends to file shortly.




Completing of the transaction is also subject to the preparation of a definitive proxy statement and making various filings and obtaining the approvals or consents of government agencies.


The press release made no reference to provisions allegedly reserving to the Board the rights to perform a “market test” and to withdraw from the Pritzker Agreement if Trans Union received a better offer before the shareholder meeting. The defendants also concede that Trans Union never made a subsequent public announcement stating that it had in fact reserved the right to accept alternate offers, the Agreement notwithstanding.


The public announcement of the Pritzker merger resulted in an “en masse” revolt of Trans Union's Senior Management. The head of Trans Union's tank car operations (its most profitable division) informed Van Gorkom that unless the merger were called off, fifteen key personnel would resign.


Instead of reconvening the Board, Van Gorkom again privately met with Pritzker, informed him of the developments, and sought his advice. Pritzker then made the following suggestions for overcoming Management's dissatisfaction: (1) that the Agreement be amended to permit Trans Union to solicit, as well as receive, higher offers; and (2) that the shareholder meeting be postponed from early January to February 10, 1981. In return, Pritzker asked Van Gorkom to obtain a commitment from Senior Management to remain at Trans Union for at least six months after the merger was consummated.


Van Gorkom called a special meeting of Trans Union's Board for October 8. The primary purpose of the October 8 Board meeting was to amend the Merger Agreement, in a manner agreeable to Pritzker, to permit Trans Union to conduct a “market test.” Van Gorkom understood that the proposed amendments were intended to give the Company an unfettered “right to openly solicit offers down through January 31.” Van Gorkom presumably so represented the amendments to Trans Union's Board members on October 8. In a brief session, the directors approved Van Gorkom's oral presentation of the substance of the proposed amendments,*883 the terms of which were not reduced to writing until October 10. But rather than waiting to review the amendments, the Board again approved them sight unseen and adjourned, giving Van Gorkom authority to execute the papers when he received them.

The next day, October 9, and before the Agreement was amended, Pritzker moved swiftly to off-set the proposed market test amendment. First, Pritzker informed Trans Union that he had completed arrangements for financing its acquisition and that the parties were thereby mutually bound to a firm purchase and sale arrangement. Second, Pritzker announced the exercise of his option to purchase one million shares of Trans Union's treasury stock at $38 per share-75 cents above the current market price.

The next day, October 10, Pritzker delivered to Trans Union the proposed amendments to the September 20 Merger Agreement. Van Gorkom promptly proceeded to countersign all the instruments on behalf of Trans Union without reviewing the instruments to determine if they were consistent with the authority previously granted him by the Board.

The October 10 amendments to the Merger Agreement did authorize Trans Union to solicit competing offers, but the amendments had more far-reaching effects. The most significant change was in the definition of the third-party “offer” available to Trans Union as a possible basis for withdrawal from its Merger Agreement with Pritzker. Under the October 10 amendments, a better offer was no longer sufficient to permit Trans Union's withdrawal. Trans Union was now permitted to terminate the Pritzker Agreement and abandon the merger only if, prior to February 10, 1981, Trans Union had either consummated a merger (or sale of assets) with a third party or had entered into a “definitive” merger agreement more favorable than Pritzker's and for a greater consideration-subject only to stockholder approval. Further, the “extension” of the market test period to February 10, 1981 was circumscribed by other amendments which required Trans Union to file its preliminary proxy statement on the Pritzker merger proposal by December 5, 1980 and use its best efforts to mail the statement to its shareholders by January 5, 1981. Thus, the market test period was effectively reduced, not extended.

In our view, the record compels the conclusion that the directors' conduct on October*884 8 exhibited the same deficiencies as did their conduct on September 20. The Board permitted its Merger Agreement with Pritzker to be amended in a manner it had neither authorized nor intended. #p#副标题#e#

(2)
Next, as to the “curative” effects of the Board's post-September 20 conduct, we review in more detail the reaction of Van Gorkom to the KKR proposal and the results of the Board-sponsored “market test.”

The KKR proposal was the first and only offer received subsequent to the Pritzker Merger Agreement. The offer resulted primarily from the efforts of Romans and other senior officers to propose an alternative to Pritzker's acquisition of Trans Union. By early October, Henry R. Kravis of KKR gave Romans written notice of KKR's “interest in making an offer to purchase 100%” of Trans Union's common stock.

Thereafter, and until early December, Romans' group worked with KKR to develop a proposal. It did so with Van Gorkom's knowledge and apparently grudging consent. On December 2, Kravis and Romans hand-delivered to Van Gorkom a formal letter-offer to purchase all of Trans Union's assets and to assume all of its liabilities for an aggregate cash consideration equivalent to $60 per share. The offer was contingent upon completing equity and bank financing of $650 million, which Kravis represented as 80% complete. The KKR letter made reference to discussions with major banks regarding the loan portion of the buy-out cost and stated that KKR was “confident that commitments for the bank financing can be obtained within two or three weeks.” Kravis stated that they were willing to enter into a “definitive agreement” under terms and conditions “substantially the same”as those contained in Trans Union's agreement with Pritzker.

Van Gorkom's reaction to the KKR proposal was completely negative; he did not view the offer as being firm because of its *885 financing condition. It was pointed out, to no avail, that Pritzker's offer had not only been similarly conditioned, but accepted on an expedited basis.

Within a matter of hours and shortly before the scheduled Board meeting, Kravis withdrew his letter-offer. He gave as his reason a sudden decision by the Chief Officer of Trans Union's rail car leasing operation to withdraw from the KKR purchasing group. Van Gorkom had spoken to that officer about his participation in the KKR proposal immediately after his meeting with Romans and Kravis. However, Van Gorkom denied any responsibility for the officer's change of mind.

GE Credit Corporation's interest in Trans Union did not develop until November; and it made no written proposal until mid-January. Even then, its proposal was not in the form of an offer. Had there been time to do so, GE Credit was prepared to offer between $2 and $5 per share above the $55 per share price which Pritzker offered. But GE Credit needed an additional 60 to 90 days; and it was unwilling to make a formal offer without a concession from Pritzker extending the February 10 “deadline” for Trans Union's stockholder meeting. As previously stated, Pritzker refused to grant such extension; and on January 21, GE Credit terminated further negotiations with Trans Union.

Our review of the record compels a finding that confirmation of the appropriateness of the Pritzker offer by an unfettered or free market test was virtually meaningless in the face of the terms and time limitations of Trans Union's Merger Agreement with Pritzker as amended October 10, 1980.

V.

The defendants ultimately rely on the stockholder vote of February 10 for exoneration.

The parties tacitly agree that a discovered failure of the Board to reach an informed business judgment in approving the merger constitutes a voidable, rather than a void, act. Hence, the merger can be sustained, notwithstanding the infirmity of the Board's action, if its approval by majority vote of the shareholders is found to have been based on an informed electorate.

The question of whether shareholders have been fully informed such that their vote can be said to ratify director action, “turns on the fairness and completeness of the proxy materials submitted by the management to the ... shareholders.” Michelson v. Duncan, supra at 220.

Applying this standard to the record before us, we find that Trans Union's stockholders were not fully informed of all facts material to their vote on the Pritzker Merger and that the Trial Court's ruling to the contrary is clearly erroneous. We list the material deficiencies in the proxy materials:

(1) The fact that the Board had no reasonably adequate information indicative of the intrinsic value of the Company, other than a concededly depressed market price, was without question material to the shareholders voting on the merger.

(2) We find false and misleading the Board's characterization of the Romans report in the Supplemental Proxy Statement. The Supplemental Proxy stated:

At the September 20, 1980 meeting of the Board of Directors of Trans Union, Mr. Romans indicated that while he could not say that $55,00 per share was an unfair price, he had prepared a preliminary report which reflected that the value of the Company was in the range of $55.00 to $65.00 per share.

Nowhere does the Board disclose that Romans stated to the Board that his calculations were made in a “search for ways to justify a price in connection with” a leveraged buy-out transaction, “rather than to say what the shares are worth”.

(3) We find misleading the Board's references to the “substantial” premium offered. The Board gave as their primary reason in support of the merger the “substantial premium” shareholders would receive. But the Board did not disclose its failure to assess the premium offered in terms of other relevant valuation techniques, thereby rendering questionable its determination as to the substantiality of the premium over an admittedly depressed stock market price.

VI.

To summarize: we hold that the directors of Trans Union breached their fiduciary duty to their stockholders (1) by their failure to inform themselves of all information reasonably available to them and relevant to their decision to recommend the Pritzker merger; and (2) by their failure to disclose all material information such as a reasonable stockholder would consider important in deciding whether to approve the Pritzker offer.

On remand, the Court of Chancery shall conduct an evidentiary hearing to determine the fair value of the shares represented by the plaintiffs' class, based on the intrinsic value of Trans Union on September 20, 1980. Thereafter, an award of damages may be entered to the extent that the fair value of Trans Union exceeds $55 per share. #p#副标题#e#

REVERSED and REMANDED for proceedings consistent herewith.

McNEILLY, Justice, dissenting:

The majority opinion reads like an advocate's closing address to a hostile jury. And I say that not lightly. Throughout the *894 opinion great emphasis is directed only to the negative, with nothing more than lip service granted the positive aspects of this case.

The majority has spoken and has effectively said that Trans Union's Directors have been the victims of a “fast shuffle” by Van Gorkom and Pritzker. That is the beginning of the majority's comedy of errors. The first and most important error made is the majority's assessment of the directors' knowledge of the affairs of Trans Union and their combined ability to act in this situation under the protection of the business judgment rule.

Trans Union's Board of Directors consisted of ten men, five of whom were “inside” directors and five of whom were “outside” directors. The “inside” directors were Van Gorkom, Chelberg, Bonser, William B. Browder, Senior Vice-President-Law, and Thomas P. O'Boyle, Senior Vice-President-Administration. At the time the merger was proposed the inside five directors had collectively been employed by the Company for 116 years and had 68 years of combined experience as directors. The “outside” directors were A.W. Wallis, William B. Johnson, Joseph B. Lanterman, Graham J. Morgan and Robert W. Reneker. With the exception of Wallis, these were all chief executive officers of Chicago based corporations that were at least as large as Trans Union. The five “outside” directors had 78 years of combined experience as chief executive officers, and 53 years cumulative service as Trans Union directors.

The inside directors wear their badge of expertise in the corporate affairs of Trans Union on their sleeves. But what about the outsiders? Dr. Wallis is or was an economist and math statistician, a professor of economics at Yale University, dean of the graduate school of business at the University of Chicago, and Chancellor of the University of Rochester. Dr. Wallis had been on the Board of Trans Union since 1962. He also was on the Board of Bausch & Lomb, Kodak, Metropolitan Life Insurance Company, Standard Oil and others.

William B. Johnson is a University of Pennsylvania law graduate, President of Railway Express until 1966, Chairman and Chief Executive of I.C. Industries Holding Company, and member of Trans Union's Board since 1968.

Directors of this caliber are not ordinarily taken in by a “fast shuffle”. I submit they were not taken into this multi-million dollar corporate transaction without being fully informed and aware of the state of the art as it pertained to the entire corporate panoroma of Trans Union. True, even *895 directors such as these, with their business acumen, interest and expertise, can go astray. I do not believe that to be the case here. These men knew Trans Union like the back of their hands and were more than well qualified to make on the spot informed business judgments concerning the affairs of Trans Union including a 100% sale of the corporation. Lest we forget, the corporate world of then and now operates on what is so aptly referred to as “the fast track”. These men were at the time an integral part of that world, all professional business men, not intellectual figureheads.

Following the October 8 board meeting of Trans Union, the investment banking firm of Salomon Brothers was retained by the corporation to search for better offers. In undertaking such project, it was agreed that Salomon Brothers would be paid the amount of $500,000 to cover its expenses as well as a fee equal to 3/8ths of 1% of the aggregate fair market value of the consideration to be received by the company in the case of a merger or the like, which meant that in the event Salomon Brothers should find a buyer willing to pay a price of $56.00 a share instead of $55.00, such firm would receive a fee of roughly $2,650,000 plus disbursements.

Salomon Brothers prepared a list of over 150 companies which it believed might be suitable merger partners, and while four of such companies, namely, General Electric, Borg-Warner, Bendix, and Genstar, Ltd. showed some interest in such a merger, none made a firm proposal to Trans Union and only General Electric showed a sustained interest.

The directors were acutely aware of the historical problems facing Trans Union which were caused by the tax laws. They had discussed these problems ad nauseam. In fact, within two months of the September 20 meeting the board had reviewed and discussed an outside study of the company done by The Boston Consulting Group and an internal five year forecast prepared by management.

The majority finds that the directors breached their fiduciary duty of complete candor to the stockholders n that the proxy materials were deficient in five areas.

What did the proxy materials disclose? The proxy material informed the shareholders that projections were furnished to potential purchasers and such projections indicated that Trans Union's net income might increase to approximately $153 million in 1985. That projection, what is almost three times the net income of $58,248,000 reported by Trans Union as its net income for December 31, 1979 confirmed the statement in the proxy materials that the “Board of Directors believes that, assuming reasonably favorable economic and financial conditions, the Company's prospects for future earnings growth are excellent.” This material was certainly sufficient to place the Company's stockholders on notice that there was a reasonable basis to believe that the prospects for future earnings growth were excellent, and that the value of their stock was more than the stock market value of their shares reflected.