FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Hayward Christopher B
2. Date of Event Requiring Statement (Month/Day/Year)
05/24/2007
3. Issuer Name and Ticker or Trading Symbol
MERRILL LYNCH & CO INC [MER]
(Last)
(First)
(Middle)
C/O MERRILL LYNCH & CO., INC., 4 WORLD FINANCIAL CENTER
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP & Finance Director
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NEW YORK, NY 10080
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 42,734 (1)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option - Right to Acquire (2)   (3) 01/25/2009 Common Stock 4,520 $ 36.1719 D  
Stock Option - Right to Acquire (2)   (4) 01/27/2010 Common Stock 6,720 $ 43.7812 D  
Stock Option - Right to Acquire (2)   (5) 01/23/2011 Common Stock 5,158 $ 77.5625 D  
Stock Option - Right to Acquire (2)   (6) 01/28/2012 Common Stock 10,914 $ 53.745 D  
Stock Option - Right to Acquire (2)   (7) 01/27/2013 Common Stock 5,644 $ 36.065 D  
Stock Option - Right to Acquire (2)   (8) 01/26/2014 Common Stock 2,652 $ 59.85 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Hayward Christopher B
C/O MERRILL LYNCH & CO., INC.
4 WORLD FINANCIAL CENTER
NEW YORK, NY 10080
      VP & Finance Director  

Signatures

Christopher B. Hayward (By Pia K. Thompson, as agent) 06/04/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) This total includes 34,304 Restricted Shares granted under the Merrill Lynch & Co., Inc. Long-Term Incentive Compensation Plan. These shares are subject to vesting and restricted periods. Transactions under these plans are exempt under the provisions of Rule 16b-3.
(2) These stock options were granted under the Merrill Lynch & Co., Inc. Long-Term Incentive Compensation Plan (the "Plan"). Transactions under this Plan are exempt under the provisions of Rule 16b-3.
(3) All stock options became exercisable after 1/25/2004.
(4) All stock options became exercisable on 1/27/2005.
(5) All stock options became exercisable on 8/1/2001.
(6) All stock options became exercisable on 8/1/2002.
(7) All stock options became exercisable after 1/27/2007.
(8) 1,989 stock options became exercisable after 1/26/2007. 663 stock options will become exercisable after 1/26/2008.
 
Remarks:
All reported positions have been rounded down to the nearest whole number.

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