SEC FORM 3

SEC FORM 3SEC 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^*

Klopfer Matthew Carl

(Last)

(First)

(Middle)

5215 N. O'CONNOR BLVD.

SUITE 700

(Street)

IRVING

TEXAS

75039

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
04/11/2026

3. Issuer Name and Ticker or Trading Symbol
FLOWSERVE CORP [ FLS ]

3a. Foreign Trading Symbol

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

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

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

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	6,845	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)
Performance Rights	⁽¹⁾	⁽¹⁾	Common Stock	1,395	⁽¹⁾	D
Restricted Stock Units	⁽²⁾	⁽²⁾	Common Stock	1,084	⁽²⁾	D
Restricted Stock Units	⁽³⁾	⁽³⁾	Common Stock	1,135	⁽³⁾	D
Performance Rights	⁽⁴⁾	⁽⁴⁾	Common Stock	931	⁽⁴⁾	D
Restricted Stock Units	⁽⁵⁾	⁽⁵⁾	Common Stock	1,449	⁽⁵⁾	D
Restricted Stock Units	⁽⁶⁾	⁽⁶⁾	Common Stock	9,028	⁽⁶⁾	D
Performance Rights	⁽⁷⁾	⁽⁷⁾	Common Stock	878	⁽⁷⁾	D
Restricted Stock Units	⁽⁸⁾	⁽⁸⁾	Common Stock	2,049	⁽⁸⁾	D

Explanation of Responses:

1. Each performance right represents a contingent right to receive one share of the issuer's common stock at vesting. The performance rights vest at a rate between 0% and 200% and are based on two factors during a three-year performance cycle beginning on January 1, 2024 and ending on December 31, 2026 which are based equally on: 1) the issuer's ROIC for each calendar year in the performance period measured against the issuer's target ROIC for each calendar year in the performance period; and 2) the issuer's FCF as a percentage of adjusted net income for each calendar year in the performance period measured against the issuer's target FCF as a percentage of adjusted net income for each calendar year in the performance period. The performance rights are also subject to 15% payout modifier (positive or negative) based on the issuer's relative TSR in comparison to the TSR of companies that comprise the S&P 500 Industrials Index for the entire performance period.

2. Each restricted stock unit represents the right to receive, at settlement, one share of common stock and is granted to the reporting person pursuant to the issuer's long-term incentive compensation plan for employees. The shares vest ratably over a three-year period on each anniversary of March 1, 2024.

3. Each restricted stock unit represents the right to receive, at settlement, one share of common stock and is granted to the reporting person pursuant to the issuer's long-term incentive compensation plan for employees. The shares cliff vest on the third anniversary of the grant date, January 15, 2025.

4. Each performance right represents a contingent right to receive one share of the issuer's common stock at vesting. The performance rights vest at a rate between 0% and 200% and are based on two factors during a three-year performance cycle beginning on January 1, 2025 and ending on December 31, 2027 which are based equally on: 1) the issuer's ROIC for each calendar year in the performance period measured against the issuer's target ROIC for each calendar year in the performance period; and 2) the issuer's FCF as a percentage of adjusted net income for each calendar year in the performance period measured against the issuer's target FCF as a percentage of adjusted net income for each calendar year in the performance period. The performance rights are also subject to 15% payout modifier (positive or negative) based on the issuer's relative TSR in comparison to the TSR of companies that comprise the S&P 500 Industrials Index for the entire performance period.

5. Each restricted stock unit represents the right to receive, at settlement, one share of common stock (plus dividends accrued on the underlying shares) and are granted to the reporting person pursuant to the issuer's long-term incentive compensation plan for employees. The shares vest ratably over a three-year period on each anniversary of March 1, 2025.

6. Each restricted stock unit represents the right to receive, at settlement, one share of common stock and is granted to the reporting person pursuant to the issuer's long-term incentive compensation plan for employees. The shares vest ratably over a three-year period on each anniversary of the grant date, September 22, 2025.

7. Each performance right represents a contingent right to receive one share of the issuer's common stock at vesting. The performance rights vest at a rate between 0% and 200% and are based on two factors during a three-year performance cycle beginning on January 1, 2026 and ending on December 31, 2028 which are: 1) the issuer's return on invested capital ("ROIC") measured against the issuer's target ROIC for each calendar year during the performance period; and 2) the issuer's average annual earnings per share growth over each calendar year during the performance period. The performance rights are also subject to a 15% payout modifier (positive or negative) based on the issuer's relative total shareholder return ("TSR") in comparison to the TSR of companies that comprise the S&P 500 Industrial Index for the entire performance period, as of January 1, 2026. The performance rights may be settled, at the issuer's discretion, in cash or shares of common stock.

8. Each restricted stock unit represents the right to receive, at settlement, one share of common stock (plus dividends accrued on the underlying shares) and are granted to the reporting person pursuant to the issuer's long-term incentive compensation plan for employees. The shares vest ratably over a three-year period on each anniversary of March 1, 2026.

Remarks:

	/s/ Grace-Ann Duquette, attorney in fact	04/15/2026
	** 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).
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 Number.
* Form 3: SEC 1473 (03-26)

SEC Form 3 filed by new insider Klopfer Matthew Carl