FORM 4
[X] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Rozwadowski Amir		 2. Issuer Name and Ticker or Trading Symbol

OTR Acquisition Corp. [ OTRA ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__X__ Director                    _____ 10% Owner
_____ Officer (give title below)    _____ Other (specify below)
(Last)          (First)          (Middle)

2920 CARLISLE STREET, SUITE 1608		 3. Date of Earliest Transaction (MM/DD/YYYY)

5/19/2022
(Street)

DALLAS, TX 75204
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
 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 Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Class A Common Stock 5/19/2022  C  40938 A (1)(2)40938 D  
Class A Common Stock 5/19/2022  J  40938 D (3)0 D  

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)		2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)		8. Price of Derivative Security
(Instr. 5)		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Class B Common Stock  (1)(2)5/19/2022  C     40938   (1)(2) (1)(2)Class A Common Stock 40938  (1)(2)0 D  
Warrant  (4)5/19/2022  J     225000   (5) (5)Class A Common Stock 225000  (4)0 D  
Explanation of Responses:
(1) As described in the issuer's registration statement on Form S-1 (File No. 333-248093) (the "Registration Statement") under the heading "Description of Securities," the shares of Class B common stock, par value $0.0001 per share ("Class B Stock"), automatically convert into shares of Class A common stock, par value $0.0001 per share ("Class A Stock"), at the time of the issuer's initial business combination, or earlier at the option of the holder, on a one-for-one basis, subject to adjustment for stock splits, stock dividends, reorganizations, recapitalizations and the like, and certain anti-dilution rights and has no expiration date.
(2) (Continued from Footnote 1) On May 19, 2022, the issuer consummated its initial business combination (the "Business Combination") with Comera Life Sciences Holdings, Inc.. ("Holdco"), a Delaware corporation. In connection with the Business Combination, each share of Class B Stock converted into Class A Stock.
(3) In connection with the Business Combination, the reporting person exchanged its Class A Shares for 40,938 fully paid and non-assessable shares of common stock, par value U.S. $0.0001 per share, of Holdco Common Stock.
(4) In connection with the Business Combination, the reporting person exchanged each of its warrants to purchase shares of Class A Stock on a one for one basis for an aggregate of 225,000 warrants to purchase shares of Holdco Common Stock at a purchase price of $11.50 per share.
(5) The warrants were not exercisable until 30 days after the issuer's initial business combination and would have expired five years from the consummation of the issuer's initial business combination.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Rozwadowski Amir
2920 CARLISLE STREET, SUITE 1608
DALLAS, TX 75204		X
Signatures
/s/ Amir Rozwadowski5/19/2022
**Signature of Reporting PersonDate
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 4(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).
Note:File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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