Michael Rubenstein Form 3 Altimar Acquisition Corp. III / MICHAEL RUBENSTEIN ownership change

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^*

RUBENSTEIN MICHAEL

(Last) (First) (Middle)

C/O ALTIMAR ACQUISITION CORP. III

40 WEST 57TH STREET, 33RD FLOOR

(Street)

NEW YORK NY 10019

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/03/2021

3. Issuer Name and Ticker or Trading Symbol
Altimar Acquisition Corp. III [ ATAQ ]

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

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

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

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)

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)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Class B Ordinary Shares	(1)	(1)	Class A Ordinary Shares	10,000	(1)	D

Explanation of Responses:

1. The Issuer's Class B ordinary shares, par value $0.0001 per share, are convertible for the Issuer's Class A ordinary shares, par value $0.0001 per share, as described under the heading "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-252570) and have no expiration date.

Remarks:

See Exhibit 24.1 - Power of Attorney.

	/s/ Tom Wasserman, as attorney-in-fact for Michael Rubenstein	03/04/2021
	** 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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