SEC FORM 3/A

SEC Form 3

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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1. Name and Address of Reporting Person^*

Li David H

(Last)

(First)

(Middle)

C/O CABOT MICROELECTRONICS CORPORATION

870 COMMONS DRIVE

(Street)

AURORA

60504

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
06/02/2008

3. Issuer Name and Ticker or Trading Symbol
CABOT MICROELECTRONICS CORP [ CCMP ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	VP, Asia Pacific Region

5. If Amendment, Date of Original Filed (Month/Day/Year)
06/10/2008

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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⁽¹⁾	1,780⁽¹⁾	D
Restricted Stock⁽¹⁾	0⁽¹⁾	D

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: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Stock Options (Right to Buy)	05/01/2003⁽²⁾	05/01/2012	Common Stock	3,000⁽⁵⁾	$49.8	D
Stock Options (Right to Buy)	12/10/2005⁽³⁾	12/10/2014	Common Stock	1,250⁽⁶⁾	$37.78	D
Stock Options (Right to Buy)	12/09/2006⁽⁴⁾	12/09/2015	Common Stock	5,483⁽⁷⁾	$30.51	D

Explanation of Responses:

1. This amendment is filed to correct the title of the Security from Restricted Stock to Common Stock and to correct the amounts previously reported.

2. Stock options subject to this grant is now fully vested.

3. Vesting Schedule: 25% 12/10/05, 25% 12/10/06, 25% 12/10/07, 25% 12/10/08.

4. Vesting Schedule: 25% 12/9/2006, 25% 12/9/2007, 25% 12/9/2008, 25% 12/9/2009.

5. This amendment is submitted to correct the number of Stock Options previously reported as 4,000 shares. The correct number is 3,000 shares.

6. This amendment is submitted to report the correct number of Stock Options previously reported as 2,500. The correct number is 1,250 shares.

7. This amendment is submitted to correct the number of Stock Options previously reported as 7,310. The correct number is 5,483 shares.

	/s/ H. Carol Bernstein (Power of Attorney)	03/15/2012
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
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