SECOND AMENDED AND RESTATED STOCKHOLDER AGREEMENT

Exhibit 10.1

SECOND AMENDED AND RESTATED

STOCKHOLDER AGREEMENT

AMONG

BLACKROCK, INC.

MERRILL LYNCH & CO., INC.

AND

MERRILL LYNCH GROUP, INC.

DATED AS OF FEBRUARY 27, 2009

Table of Contents

i

ii

SECOND AMENDED AND RESTATED STOCKHOLDER AGREEMENT

SECOND AMENDED AND RESTATED STOCKHOLDER AGREEMENT dated as of February 27, 2009, by and among BlackRock, Inc., a Delaware corporation (“BlackRock”) and Merrill Lynch & Co., Inc., a Delaware corporation (“Merrill Lynch”) and Merrill Lynch Group, Inc., a Delaware corporation.

WHEREAS, BlackRock and Merrill Lynch are parties to an Amended and Restated Stockholder Agreement, dated as of July 16, 2008 (as so amended and restated, the “Original Agreement”);

WHEREAS, the Merrill Lynch Merger shall constitute a Change of Control of Merrill Lynch under the terms of the Original Agreement (the “Merger Change of Control”);

WHEREAS, on September 15, 2008, Merrill Lynch entered into a merger agreement with Bank of America Corporation (“Bank of America”), pursuant to which, effective as of the closing of the transaction contemplated thereby a subsidiary of Bank of America will merge with and into Merrill Lynch (the “Merrill Lynch Merger”);

WHEREAS, in connection with the Merrill Lynch Merger and the Merger Change of Control, BlackRock and Merrill Lynch propose to enter into transactions whereby Merrill Lynch will exchange (i) 49,865,000 shares of BlackRock Common Stock (as defined herein) for a like number of shares of Series B Participating Preferred Stock (as defined herein) and (ii) 12,604,918 shares of Series A Participating Preferred Stock (as defined herein) for a like number of shares of Series B Participating Preferred Stock (the “Merrill Lynch Exchanges”);

WHEREAS, concurrently with the Merrill Lynch Exchange, The PNC Financial Services Group, Inc. (“PNC”) will exchange (i) 17,872,000 shares of BlackRock Common Stock for a like number of shares of Series B Participating Preferred Stock and (ii) up to 2,940,866 shares of BlackRock Common Stock for a like number of shares of Series C Participating Preferred Stock (as defined herein) (the “PNC Exchanges” and together with the Merrill Lynch Exchange, the “Exchange Transactions”);

WHEREAS, the parties hereto wish to amend and restate the Original Agreement in its entirety;

NOW, THEREFORE, in consideration of the premises and of the mutual covenants and obligations hereinafter set forth, the parties hereto hereby agree as follows:

ARTICLE I

DEFINITIONS

Section 1.1 Certain Defined Terms . As used herein, the following terms shall have the following meanings:

“Affiliate” means, with respect to any Person, any other Person that directly, or indirectly through one or more intermediaries, controls, is controlled by or is under common control with, such specified Person; provided , however , that solely for purposes of this Agreement, notwithstanding anything to the contrary set forth herein, neither BlackRock nor any of its Controlled Affiliates shall be deemed to be a Subsidiary or Affiliate of Merrill Lynch or Bank of America solely by virtue of the Beneficial Ownership by Merrill Lynch of BlackRock Capital Stock, the election of Directors nominated by Merrill Lynch to the Board, the election of any other Directors nominated by the Board or any other action taken by Merrill Lynch in accordance with the terms and conditions of, and subject to the limitations and restrictions set forth on such Person in, this Agreement (and irrespective of the characteristics of the aforesaid relationships and actions under applicable law or accounting principles).

“Agreement” means this Second Amended and Restated Stockholder Agreement as it may be amended, supplemented, restated or modified from time to time.

“Beneficial Ownership” by a Person of any securities includes ownership by any Person who, directly or indirectly, through any contract, arrangement, understanding, relationship or otherwise, has or shares (i) voting power which includes the power to vote, or to direct the voting of, such security; and/or (ii) investment power which includes the power to dispose, or to direct the disposition, of such security; and shall otherwise be interpreted in accordance with the term “beneficial ownership” as defined in Rule 13d-3 adopted by the Commission under the Exchange Act; provided that for purposes of determining Beneficial Ownership, a Person shall be deemed to be the Beneficial Owner of any securities which may be acquired by such Person pursuant to any agreement, arrangement or understanding or upon the exercise of conversion rights, exchange rights, warrants or options, or otherwise (irrespective of whether the right to acquire such securities is exercisable immediately or only after the passage of time, including the passage of time in excess of 60 days, the satisfaction of any conditions, the occurrence of any event or any combination of the foregoing), except that in no event will Merrill Lynch be deemed to Beneficially Own any securities which it has the right to acquire pursuant to Section 2.3 unless, and then only to the extent that, it shall have actually exercised such right. For purposes of this Agreement, a Person shall be deemed to Beneficially Own any securities Beneficially Owned by its Affiliates (including as Affiliates for this purpose its officers and directors only to the extent they would be Affiliates solely by reason of their equity interest) or any Group of which such Person or any such Affiliate is or becomes a member; provided , however , that securities Beneficially Owned by Merrill Lynch shall not include, for any purpose under this Agreement, any Voting Securities or other securities held by such Person and its Affiliates in trust, managed, brokerage, custodial, nominee or other customer accounts; in trading, inventory, lending or similar accounts of such Person and Affiliates of such Person which are broker-dealers or otherwise engaged in the securities business; or in pooled investment vehicles sponsored, managed and/or advised or subadvised by such Person and its Affiliates except, if they Beneficially Own more than 25% of the ownership interests in a pooled investment vehicle, to the extent of their ownership interests therein; provided that in each case, such securities were acquired in the ordinary course of business of their securities business and not with the intent or purpose of influencing control of BlackRock or avoiding the provisions of this Agreement. The term “Beneficially Own” shall have a correlative meaning.

“Board” means the Board of Directors of BlackRock.

2

“Business Day” shall mean any day that is not a Saturday, a Sunday or other day on which banks are required or authorized by law to be closed in New York, New York.

“By Laws” means the By-Laws of BlackRock, as amended or supplemented from time to time.

“Capital Stock” means, with respect to any Person at any time, any and all shares, interests, participations or other equivalents (however designated, whether voting or non-voting) of capital stock, partnership interests (whether general or limited) or equivalent ownership interests in or issued by such Person.

A “Change of Control of Merrill Lynch” shall be deemed to occur when the Board of Directors of Merrill Lynch determines that a Change in Control of Merrill Lynch has occurred, as a Change in Control of Merrill Lynch may be defined from time to time by the Board of Directors of Merrill Lynch; provided , however , that at a minimum, a Change in Control of Merrill Lynch shall, without any action by the Board of Directors of Merrill Lynch, be deemed to occur if:

(i) any Person, excluding employee benefit plans of Merrill Lynch, is or becomes the Beneficial Owner, directly or indirectly, of securities of Merrill Lynch representing a majority of the combined voting power of Merrill Lynch’s then outstanding securities;

(ii) Merrill Lynch consummates a merger, consolidation, share exchange, division or other reorganization or transaction of Merrill Lynch (a “Fundamental Transaction”) with any other Person, other than a Fundamental Transaction that results in the voting securities of Merrill Lynch outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity) at least a majority of the combined voting power immediately after such Fundamental Transaction of (A) Merrill Lynch’s outstanding securities, (B) the surviving entity’s outstanding securities, or (C) in the case of a division, the outstanding securities of each entity resulting from the division;

(iii) the shareholders of Merrill Lynch approve a plan of complete liquidation or winding-up of Merrill Lynch or an agreement for the sale or disposition (in one transaction or a series of transactions) of all or substantially all Merrill Lynch’s assets;

(iv) as a result of a proxy contest, individuals who prior to the conclusion thereof constituted the Board of Directors of Merrill Lynch (including for this purpose any new director whose election or nomination for election by Merrill Lynch’s shareholders in connection with such proxy contest was approved by a vote of at least two thirds of the directors then still in office who were directors prior to such proxy contest) cease to constitute at least a majority of the Board of Directors of Merrill Lynch (excluding any Board seat that is vacant or otherwise unoccupied);

(v) during any period of twenty-four (24) consecutive months, individuals who at the beginning of such period constituted the Board of Directors of Merrill Lynch (including for this purpose any new director whose election or nomination for election by Merrill Lynch’s shareholders was approved by a vote of at least two thirds of the directors then still in office who were directors at the beginning of such period) cease for any reason to constitute at least a majority of the Board of Directors of Merrill Lynch (excluding any Board seat that is vacant or otherwise unoccupied); or

3

(vi) Merrill Lynch, directly or indirectly, disposes in one transaction or a series of related transactions of the business segment currently referred to as the Global Private Client business of Merrill Lynch, as the same may be renamed or restructured from time to time. For purposes of this provision, a disposition shall not be deemed to occur unless it results in the loss of a minimum of 66% of the annual gross revenues (excluding net interest profit and related hedges and adjustments for any extraordinary items) of the Global Private Client segment as measured by reference to the annual gross revenues of the Global Private Client segment (excluding net interest profit and related hedges and adjustments for any extraordinary items) in the four fiscal quarters immediately preceding the first such disposition transaction. For purposes of this definition, “net interest profit and related hedges” refers to interest revenues less interest expense and includes the allocation to the Global Private Client business of the interest spread earned in Merrill Lynch’s banking subsidiaries for deposits, as well as interest earned, net of provisions for loan losses, on securities-based loans, mortgages, small- and middle-market business and other loans, corporate funding allocations, and the interest component of non-qualifying derivatives.

“Commission” means the United States Securities and Exchange Commission.

“Common Stock” means the shares of Common Stock, par value $0.01 per share, of BlackRock and any securities issued in respect thereof, or in substitution therefor, in connection with any stock split, dividend or combination, or any reclassification, recapitalization, merger, consolidation, exchange or other similar reorganization.

“control” (including the terms “controlled by” and “under common control with”), with respect to the relationship between or among two or more Persons, means the possession, directly or indirectly, of the power to direct or cause the direction of the affairs or management of a Person, whether through the ownership of voting securities, as trustee or executor, by contract or any other means, or otherwise to control such Person within the meaning of such term as used in Rule 405 under the Securities Act. For purposes of this definition, a general partner or managing member of a Person shall always be considered to control such Person provided , however , that a Person shall not be treated as having any control over any collective investment vehicle to which it provides services unless it and its Affiliates collectively have a proprietary economic interest exceeding 25% of the equity interest in such collective investment vehicle.

“Controlled Affiliate” of any Person means a Person that is directly or indirectly controlled by such other Person.

“Director” means any member of the Board (other than any advisory, honorary or other non-voting member of the Board).

“Equivalent Securities” means at any time shares of any class of Capital Stock or other securities or interests of a Person which are substantially equivalent to the Voting Securities of such Person other than by reason of not having voting rights, including, for the avoidance of doubt, the Series A Participating Preferred Stock, Series B Participating Preferred Stock and Series C Participating Preferred Stock.

4

“Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated by the Commission from time to time thereunder (or under any successor statute).

“Fair Market Value” means, as to any securities or other property, the cash price at which a willing seller would sell and a willing buyer would buy such securities or property in an arm’s length negotiated transaction without time constraints. With respect to any securities that are traded on a national securities exchange, Fair Market Value shall mean the arithmetic average of the closing prices of such securities on their principal market for the ten consecutive trading days immediately preceding the applicable date of determination and with respect to shares of Participating Preferred Stock of any series shall be the same price per share as the Fair Market Value per share of the Common Stock. The Fair Market Value of any property or assets, other than securities described in the preceding sentence, with an estimated value of less than 1% of the Fair Market Value of all of the issued and outstanding BlackRock Capital Stock shall be determined by the Board (acting through a majority of the Independent Directors) in its good faith judgment. The Fair Market Value of all other property or assets shall be determined by an Independent Investment Banking Firm, selected by a majority of the Independent Directors, whose determination shall be final and binding on the parties hereto. The fees and expenses of such Independent Investment Banking Firm shall be paid by BlackRock.

“Group” shall have the meaning assigned to it in Section 13(d)(3) of the Exchange Act.

“Independent Director” means any Director who (i) is or would be an “independent director” with respect to BlackRock pursuant to Section 303A.02 of the New York Stock Exchange Listed Company Manual (or any successor provision) and (ii) was not nominated or proposed for nomination by or on behalf of, Merrill Lynch, any Significant Stockholder, or any Affiliates or Designated Directors of Merrill Lynch or a Significant Stockholder.

“Independent Investment Banking Firm” means an investment banking firm of nationally recognized standing that in the reasonable judgment of the Person or Persons engaging such firm, taking into account any prior relationship with Merrill Lynch, any Significant Stockholder or BlackRock, is independent of such Person or Persons.

“Merrill Lynch Alternative Manager” means any asset management business formed or acquired, either in whole or in part, after July 16, 2008 by Merrill Lynch, substantially all of the business of which is the management of collective investment funds and/or separately managed accounts that primarily utilize (i) non-traditional investment techniques, including but not limited to short selling, leverage, arbitrage, specialty finance, and quantitatively-driven structured trades and (ii) other activities that are not a Merrill Lynch Restricted Activity.

“Ownership Cap” means, at any time of determination, with respect to Merrill Lynch and its Affiliates, each of (i) 4.9 percent of the Total Voting Power of the Voting

5

Securities of BlackRock issued and outstanding at such time (the “Voting Ownership Cap”) and (ii) 49.8 percent of the sum of the Voting Securities and the Participating Preferred Stock of BlackRock issued and outstanding at such time and issuable upon the exercise of any options or other rights outstanding at that time which, if exercised, would result in the issuance of additional Voting Securities or Participating Preferred Stock (the “Total Ownership Cap”).

“Ownership Percentage” means, with respect to any Person, at any time, the quotient, expressed as a percentage, of (i) with respect to the Voting Ownership Cap (A) the Total Voting Power of all Voting Securities of another Person Beneficially Owned by such Person and its Affiliates divided by (B) the Total Voting Power of all Voting Securities of such other Person issued and outstanding at that time and (ii) with respect to the Total Ownership Cap, (A) the Total Voting Power of all Voting Securities and the total number of Equivalent Securities of another Person Beneficially Owned by such Person and its Affiliates divided by (B) the Total Voting Power of all Voting Securities and the total number of Equivalent Securities of such other Person issued and outstanding at that time and issuable upon the exercise of any options or other rights outstanding at that time which, if exercised, would result in the issuance of additional Voting Securities or Equivalent Securities.

“Ownership Threshold” means, at any time of determination, with respect to Merrill Lynch and its Affiliates, 20 percent of the Total Voting Power of the Voting Securities of BlackRock issued and outstanding at such time.

“Participating Preferred Stock” means Series A Participating Preferred Stock, Series B Participating Preferred Stock and Series C Participating Preferred Stock.

“Person” means any individual, corporation, limited liability company, limited or general partnership, joint venture, association, joint-stock company, trust, unincorporated organization, other entity, government or any agency or political subdivision thereof or any Group comprised of two or more of the foregoing.

“Restricted Person” means each of the entities (and their successors) set forth in that certain letter to be delivered by Merrill Lynch prior to the fifth anniversary of the Closing who Merrill Lynch considers to be the nine organizations most competitive with its overall business; provided , that not more than once in any 12 month period thereafter, Merrill Lynch may, with the consent of a majority of the Independent Directors, which consent, subject to applicable fiduciary duties, shall not be unreasonably withheld, amend such letter; provided , further , that at no time may more than nine entities (together with their Affiliates) be Restricted Persons.

“Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations promulgated by the Commission from time to time thereunder (or under any successor statute).

“Series A Participating Preferred Stock” means the Series A Participating Preferred Stock, par value $.01 per share, of BlackRock and any securities issued in respect thereof, or in substitution therefor, or in substitution therefor in connection with any stock split, dividend or combination, or any reclassification, recapitalization, merger, consolidation, exchange or other similar reorganization.

6

“Series B Participating Preferred Stock” means the Series B Convertible Participating Preferred Stock, par value $.01 per share, of BlackRock and any securities issued in respect thereof, or in substitution therefor, or in substitution therefor in connection with any stock split, dividend or combination, or any reclassification, recapitalization, merger, consolidation, exchange or other similar reorganization.

“Series C Participating Preferred Stock” means the Series C Convertible Participating Preferred Stock, par value $.01 per share, of BlackRock and any securities issued in respect thereof, or in substitution therefor, or in substitution therefor in connection with any stock split, dividend or combination, or any reclassification, recapitalization, merger, consolidation, exchange or other similar reorganization.

“Significant Stockholder” means, at any time of determination, any Person other than Merrill Lynch and its Affiliates that Beneficially Owns 20 percent or more of the BlackRock Capital Stock issued and outstanding at such time.

“Subsidiary” means, with respect to any Person, any corporation or other organization, whether incorporated or unincorporated, (i) of which such Person or any other Subsidiary of such Person is a general partner (excluding partnerships, the general partnership interests of which held by such Person or any Subsidiary of such Person do not have a majority of the voting or similar interests in such partnership), or (ii) at least a majority of the securities or other interests of which having by their terms ordinary voting power to elect a majority of the board of directors or others performing similar functions with respect to such corporation or other organization is directly or indirectly owned or controlled by such Person or by any one or more of its Subsidiaries, or by such Person and one or more of its Subsidiaries.

“Total Voting Power” means the total number of votes entitled to be cast by the holders of the outstanding Capital Stock and any other securities entitled, in the ordinary course, to vote on matters put before the holders of the Capital Stock generally.

“Transfer” means, directly or indirectly, to sell, transfer, assign, pledge, encumber, hypothecate or similarly dispose of (by operation of law or otherwise), either voluntarily or involuntarily, or to enter into any contract, option or other arrangement or understanding with respect to the sale, transfer, assignment, pledge, encumbrance, hypothecation or similar disposition of (by operation of law or otherwise), any Capital Stock or any interest in any Capital Stock; provided , however , that a merger, amalgamation, plan of arrangement or consolidation or similar business combination transaction in which Merrill Lynch is a constituent corporation (or otherwise a party including, for the avoidance of doubt, a transaction pursuant to which a Person acquires all or a portion of Merrill Lynch’s outstanding Capital Stock, whether by tender or exchange offer, by share exchange, or otherwise) shall not be deemed to be the Transfer of any BlackRock Capital Stock Beneficially Owned by Merrill Lynch, provided that the primary purpose of any such transaction is not to avoid the provisions of this Agreement and that the successor or surviving person to such a merger, amalgamation, plan of arrangement or consolidation or similar business combination transaction, if not Merrill Lynch, expressly

7

assumes all obligations of Merrill Lynch under this Agreement. For purposes of this Agreement, the term Transfer shall include the sale of an Affiliate of Merrill Lynch or Merrill Lynch’s interest in an Affiliate which Beneficially Owns BlackRock Capital Stock unless such Transfer is in connection with a merger, amalgamation, plan of arrangement or consolidation or similar business combination transaction referred to in the first proviso of the previous sentence.

“Voting Securities” means at any time shares of any class of Capital Stock or other securities or interests of a Person which are then entitled to vote generally, and not solely upon the occurrence and during the continuation of certain specified events, in the election of Directors or Persons performing a similar function with respect to such Person, and any securities convertible into or exercisable or exchangeable at the option of the holder thereof for such shares of Capital Stock.

Section 1.2 Other Defined Terms . The following terms shall have the meanings defined for such terms in the Sections set forth below:

8

Section 1.3 Other Definitional Provisions . The words “hereof”, “herein” and “hereunder” and words of similar import when used in this Agreement shall refer to this Agreement as a whole and not to any particular provision of this Agreement, and Article and Section references are to this Agreement unless otherwise specified.

The meanings given to terms defined herein shall be equally applicable to both the singular and plural forms of such terms.

Section 1.4 Methodology for Calculations . For purposes of calculating the number of outstanding shares of BlackRock Capital Stock or Voting Securities and the number of shares of BlackRock Capital Stock or Voting Securities Beneficially Owned by any Person as of any date, any shares of BlackRock Capital Stock or Voting Securities held in BlackRock’s treasury or belonging to any Subsidiaries of BlackRock which are not entitled to be voted or counted for purposes of determining the presence of a quorum pursuant to Section 160(c) of the Delaware General Corporation Law (or any successor statute (the “DGCL”)) shall be disregarded.

ARTICLE II

SHARE OWNERSHIP

Section 2.1 Acquisition of Additional BlackRock Capital Stock .

(a) Except as provided in paragraph (b) below Merrill Lynch covenants and agrees with BlackRock that it shall not, and shall not permit any of its Affiliates to, directly or indirectly, acquire, offer or propose to acquire or agree to acquire, whether by purchase, tender or exchange offer, through the acquisition of control of another Person (whether by way of merger, consolidation or otherwise), by joining a partnership, syndicate or other Group or otherwise, the Beneficial Ownership of any additional BlackRock Capital Stock, if after giving effect to such acquisition or action, it would Beneficially Own BlackRock Capital Stock representing more than its Voting Ownership Cap or Total Ownership Cap.

(b) Notwithstanding the foregoing, the acquisition (whether by merger, consolidation, exchange of equity interests, purchase of all or part of the equity interests or assets or otherwise) by Merrill Lynch or an Affiliate thereof of any Person that Beneficially Owns BlackRock Capital Stock, or the acquisition of BlackRock Capital Stock in connection with securing or collecting a debt previously contracted in good faith in the ordinary course of Merrill Lynch’s or such Affiliate’s banking, brokerage or securities business, shall not constitute a violation of its Ownership Cap; provided that (i) the primary purpose of any such transaction is not to avoid the provisions of this Agreement, including its Ownership Cap, and (ii) in the case of an acquisition of another Person, it uses reasonable best efforts to negotiate terms in connection with the relevant acquisition agreement requiring such other Person to divest itself of sufficient BlackRock Capital Stock it Beneficially Owns so that its Voting Ownership Cap and its Total Ownership Cap would not be exceeded pro forma for the acquisition, with such divestiture to be effected concurrently with, or as promptly as practicable following, the consummation of such acquisition (but in no event more than 120 days following such consummation, or such longer period not in excess of 243 days following such consummation as may be necessary due to the possession of material non-public information or so that neither it

9

nor any of its Affiliates incurs any liability under Section 16(b) of the Exchange Act if, for purposes of Section 16(b), they have not acquired Beneficial Ownership of any other shares of BlackRock Capital Stock or derivatives thereof after the date of the transaction that resulted in Merrill Lynch exceeding its Ownership Cap) and the successor or surviving Person to such transaction, if not Merrill Lynch or such Affiliate, expressly assumes all obligations of Merrill Lynch or such Affiliate, as the case may be, under this Agreement; and provided , further , that the provisions of paragraph (c) below are complied with.

(c) (i) If at any time Merrill Lynch and any of its Affiliates Beneficially Own in the aggregate BlackRock Capital Stock representing more than its Voting Ownership Cap or Total Ownership Cap, then Merrill Lynch shall, as soon as is reasonably practicable (but in no event longer than 120 days after its Ownership Percentage first exceeds its Voting Ownership Cap or Total Ownership Cap or such longer period not in excess of 243 days following such consummation as may be necessary due to the possession of material non-public information or so that neither it nor any of its Affiliates incurs any liability under Section 16(b) of the Exchange Act if, for purposes of Section 16(b), they have not acquired Beneficial Ownership of any other shares of BlackRock Capital Stock or derivatives thereof after the date of the transaction that resulted in Merrill Lynch exceeding its Ownership Cap) Transfer (in any manner that would be permitted by Section 3.2(b) after the lapse of any minimum holding period) a number of shares of BlackRock Capital Stock sufficient to reduce the amount of BlackRock Capital Stock Beneficially Owned by it and its Affiliates to an amount representing not greater than its Ownership Cap.

(ii) Notwithstanding any other provision of this Agreement, in no event may Merrill Lynch or any of its Affiliates, directly or indirectly, including through any agreement or arrangement, exercise any voting rights, during the term of this Agreement, in respect of any BlackRock Capital Stock Beneficially Owned by it and its Affiliates representing in excess of its Voting Ownership Cap.

(d) Any additional BlackRock Capital Stock acquired and Beneficially Owned by Merrill Lynch or any of its Affiliates following the Closing (the “Closing”) of the transactions contemplated by the Transaction Agreement and Plan of Merger, dated as of February 15, 2006 (the “Transaction Agreement”) shall be subject to the restrictions contained in this Agreement as fully as if such shares of BlackRock Capital Stock were acquired by it at or prior to the Closing.

(e) Notwithstanding Section 2.1(a), Merrill Lynch shall not and shall cause its Affiliates not to acquire Beneficial Ownership of any shares of BlackRock Capital Stock from any Person other than BlackRock or a Significant Stockholder (other than pursuant to an acquisition effected in a manner contemplated by Section 2.1(b)) if after giving effect to such acquisition Merrill Lynch, together with its Affiliates, would Beneficially Own BlackRock Capital Stock representing more than 90 percent of its Voting Ownership Cap.

Section 2.2 Prohibition of Certain Communications and Actions . Merrill Lynch shall not and shall cause its Affiliates and its and their directors officers and other agents not to (w) solicit, seek or offer to effect, or effect, (x) negotiate with or provide any information to the Board, any director or officer of BlackRock, any stockholder of BlackRock, any employee or union or other labor organization representing employees of BlackRock or any other Person

10

with respect to, (y) make any statement or proposal, whether written or oral, either alone or in concert with others, to the Board, any director or officer of BlackRock or any stockholder of, any employee or union or other labor organization representing employees of BlackRock or any other Person with respect to, or (z) make any public announcement (except as required by law in respect of actions permitted hereby) or proposal or offer whatsoever (including, but not limited to, any “solicitation” of “proxies” as such terms are defined or used in Regulation 14A under the Exchange Act) with respect to:

(a) any acquisition, offer to acquire, or agreement to acquire, directly or indirectly, by purchase or any other action the purpose or result of which would be to Beneficially Own (i) BlackRock Capital Stock or Voting Stock of any successor to or person in control of BlackRock in an amount which, when added to any other BlackRock Capital Stock then Beneficially Owned by Merrill Lynch and any of its Affiliates would cause the total amount of BlackRock Voting Securities Beneficially Owned by Merrill Lynch to exceed its Voting Ownership Cap or Total Ownership Cap, (ii) any equity securities of any Controlled Affiliate of BlackRock, (in each case except to the extent such acquisition, offer or agreement would be permissible under Section 2.1),

(b) any form of business combination or similar or other extraordinary transaction involving BlackRock or any Controlled Affiliate thereof, including, without limitation, a merger, tender or exchange offer or sale of any substantial portion of the assets of BlackRock or any Controlled Affiliate of BlackRock,

(c) any form of restructuring, recapitalization or similar transaction with respect to BlackRock or any Controlled Affiliate of BlackRock,

(d) any purchase of any assets, or any right to acquire any asset (through purchase, exchange, conversion or otherwise), of BlackRock or any Controlled Affiliate of BlackRock, other than investment assets of BlackRock or any Controlled Affiliate of BlackRock in the ordinary course of its banking, brokerage or securities business and other than an insubstantial portion of such assets in the ordinary course of business,

(e) being a member of a Group for the purpose of acquiring, holding or disposing of any shares of BlackRock Capital Stock or any Controlled Affiliate of BlackRock,

(f) selling any share of BlackRock Capital Stock in an unsolicited tender offer that is opposed by the Board,

(g) any proposal to seek representation on the Board except as contemplated by this Agreement or, other than as permitted by the proviso to Section 4.6(a) of this Agreement, any proposal to seek to control or influence the management, Board or policies of BlackRock or any Controlled Affiliate of BlackRock, or

(h) encourage, join, act in concert with or assist (including, but not limited to, providing or assisting in any way in the obtaining of financing for, or acting as a joint or co-bidder with) any third party to do any of the foregoing (the actions referred to in the foregoing provisions of this sentence being referred to as “Prohibited Actions”). If at any time Merrill Lynch or any Affiliate thereof is approached by any Person requesting Merrill Lynch or any

11

Affiliate to instigate, encourage, join, act in concert with or assist any Person in a Prohibited Action involving the assets, businesses or securities of BlackRock or any of its Controlled Affiliates or any other Prohibited Actions, Merrill Lynch will promptly inform BlackRock of the nature of such contact and the parties thereto.

Nothing in this Section 2.2 shall limit the ability of any Director, including any Merrill Lynch Designee, to vote in his or her capacity as a Director in such manner as he or she sees fit.

Section 2.3 Purchases of Additional Securities . At any time that BlackRock effects an issuance (a “Stock Issuance”) of additional Voting Securities or Equivalent Securities other than in connection with any employee restricted stock, stock option, incentive or other benefit plan to any Person or Persons other than Merrill Lynch or any Affiliate thereof, Merrill Lynch shall, subject to Section 2.1, have the right to purchase from BlackRock (in each instance, an “Additional BlackRock Stock Purchase”) (i) additional shares of Participating Preferred Stock such that following such Stock Issuance and such purchase Merrill Lynch and its Affiliates will Beneficially Own shares and/or other securities representing the lesser of (A) the lesser of Merrill Lynch’s Voting Ownership Cap and its Total Ownership Cap and (B) the same Ownership Percentage of Merrill Lynch’s Voting Ownership Cap and Total Ownership Cap as they Beneficially Owned immediately prior to such Stock Issuance and (ii) if the total of all Stock Issuances including the Stock Issuance in question since the Closing has the effect, after taking into account any repurchases of BlackRock Capital Stock by BlackRock since the Closing and any Transfers of BlackRock Capital Stock by Merrill Lynch and its Affiliates in accordance with Section 3.2(b)(i) or (ii), of decreasing the Total Voting Power of BlackRock Capital Stock issued and outstanding after giving effect to such Stock Issuance Beneficially Owned by Merrill Lynch and its Affiliates to 90% or less of Merrill Lynch’s Voting Ownership Cap, additional Voting Securities of the same class or series issued in the Stock Issuance such that following such Stock Issuance and such purchase Merrill Lynch and its Affiliates will Beneficially Own shares and/or other securities representing the lesser of (x) Merrill Lynch’s Voting Ownership Cap and (y) the same Ownership Percentage of Merrill Lynch’s Voting Ownership Cap as Merrill Lynch’s and its Affiliates Beneficially Owned immediately prior to such Stock Issuance. If Merrill Lynch exercises such right