FORM 4
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

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 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 *
Ludwig Helmuth
  2. Issuer Name and Ticker or Trading Symbol
CIRCOR INTERNATIONAL INC [CIR] 		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)
30 CORPORATE DRIVE, SUITE 200		 3. Date of Earliest Transaction (Month/Day/Year)
10/18/2023
(Street)

BURLINGTON, MA 01803		 4. If Amendment, Date 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
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction 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
Common Stock 10/18/2023   M   3,780 A $ 0 36,740 D  
Common Stock 10/18/2023   D   36,740 D (1) (2) 0 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8) 		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5) 		6. Date Exercisable and Expiration Date
(Month/Day/Year) 		7. Title and Amount of Underlying Securities
(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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Unit $ 0 10/18/2023   M(3)     3,780   (3) 03/17/2033 Common Stock 3,780 $ 0 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Ludwig Helmuth
30 CORPORATE DRIVE, SUITE 200
BURLINGTON, MA 01803		   X      

Signatures

 Paul Caron, their attorney in fact   10/18/2023
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Pursuant to the Agreement and Plan of Merger dated June 5, 2023 (as amended on June 26, 2023 by Amendment No. 1 to Agreement and Plan of Merger, as further amended on June 29, 2023 by Amendment No. 2 to Agreement and Plan of Merger, the "Merger Agreement"), by and among CIROCR International, Inc. ("CIRCOR"), Cube BidCo, Inc., a Delaware corporation ("Parent"), and Cube Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Parent, pursuant to which Cube Merger Sub, Inc. merged with and into CIRCOR, with CIRCOR remaining as the surviving corporation, at the effective time of the Merger (the "Effective Time"), (continued in Footnote 2)
(2) each issued and outstanding share of common stock, par value $0.01 per share, of CIRCOR ("Company Common Stock"), immediately prior to the Effective Time was converted into the right to receive an amount in cash equal to $56.00, without interest (the "Merger Consideration"), and as of the Effective Time, all such shares of Company Common Stock are no longer outstanding and were automatically cancelled and cease to exist.
(3) The Restricted Stock Units ("RSUs") were granted to the Reporting Person by CIRCOR as part of equity incentive grants made by CIRCOR on March 17, 2023. Pursuant to the Merger Agreement, as of the Effective Time, each unvested RSU vested in full.

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