Sec Form 4 Filing - Sestrick Michael Robert @ BALCHEM CORP - 2024-02-21

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 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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1. Name and Address of Reporting Person Sestrick Michael Robert 2. Issuer Name and Ticker or Trading Symbol BALCHEM CORP [ BCPC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) SVP & Chief Technology Officer (Last) (First) (Middle) C/O BALCHEM CORPORATION, 5 PARAGON DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 02/21/2024 (Street) MONTVALE, NJ07645 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 02/21/2024 M 3,900 ( 1 ) A $ 76.89 10,636 D Common Stock 02/21/2024 M 3,500 ( 1 ) A $ 74.57 14,136 D Common Stock 02/21/2024 M 3,700 ( 1 ) A $ 84.09 17,836 D Common Stock 02/21/2024 S 11,100 D $ 153.2084 ( 2 ) 6,736 D

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 Stock Options (right to buy) $ 76.89 02/21/2024 M 3,900 ( 3 ) 04/18/2027 Common Stock 3,900 $ 0 0 D Stock Options (right to buy) $ 74.57 02/21/2024 M 3,500 ( 4 ) 02/15/2028 Common Stock 3,500 $ 0 0 D Stock Options (right to buy) $ 84.09 02/21/2024 M 3,700 ( 5 ) 02/13/2029 Common Stock 3,700 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Sestrick Michael Robert C/O BALCHEM CORPORATION 5 PARAGON DRIVE MONTVALE, NJ07645 SVP & Chief Technology Officer Signatures /s/ Travis Larsen, Attorney in Fact for Michael Robert Sestrick 02/23/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Exercise of fully vested non-qualified stock options. ( 2 )This transaction was executed in multiple sales ranging from $152.7200 to $153.6600 per share, inclusive. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or any security holder of the issuer full information regarding the number of shares and prices at which the transactions were affected regarding this footnote. ( 3 )Stock options that vested 20% on April 18, 2018, 40% on April 18, 2019, and 40% on April 18, 2020, and are exercisable. ( 4 )Stock options that vested 20% on February 15, 2019, 40% on February 15, 2020, and 40% on February 15, 2021, and are exercisable. ( 5 )Stock options that vested 20% on February 13, 2020, 40% on February 13, 2021, and 40% on February 13, 2022, and are exercisable.

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).

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