Sec Form 4 Filing - HUFF CRAIG A @ CitroTech Inc. - 2026-04-07

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 HUFF CRAIG A 2. Issuer Name and Ticker or Trading Symbol CitroTech Inc. [ CITR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 6400 S. FIDDLERS GREEN CIR., SUITE 300 3. Date of Earliest Transaction (MM/DD/YY) 04/07/2026 (Street) GREENWOOD VILLAGE, CO80111 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ 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 04/28/2026 C( 1 ) 940,799 A $ 2.4 3,357,467 I By BoltRock Holdings LLC ( 2 )

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 Warrant $ 3 04/07/2026 J( 3 ) 46,250 ( 3 ) 04/07/2031 Common Stock 46,250 $ 0 46,250 I By BoltRock Holdings LLC ( 2 ) Convertible Note $ 2.4 04/28/2026 C( 1 ) ( 1 ) 04/28/2026 Common Stock 940,799 $ 0 0 I By BoltRock Holdings LLC ( 2 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other HUFF CRAIG A 6400 S. FIDDLERS GREEN CIR. SUITE 300 GREENWOOD VILLAGE, CO80111 X X BoltRock Holdings LLC 712 5TH AVENUE NEW YORK, NY10019 X Signatures /s/ Craig A. Huff 04/30/2026 Signature of Reporting Person Date BoltRock Holdings LLC, By: /s/ Craig A. Huff, Managing Member 04/30/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The 10% Senior Secured Convertible Promissory Note (the "Note") was convertible, in whole but not in part, into shares of Common Stock at a conversion price of $2.40 per share, based on the outstanding principal amount plus all accrued and unpaid interest, at the Reporting Person's election or automatically upon the occurrence of certain events tied to the trading price of the Common Stock. The reported amount includes shares of Common Stock issuable upon the conversion of interest accruing at a rate of 10% per annum, payable in kind. The maturity date of the Note was extended to April 28, 2026, on February 27, 2026. ( 2 )The securities are held directly by BoltRock Holdings LLC ("BoltRock"). Craig Huff is the managing member of BoltRock. Mr. Huff disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein. ( 3 )In connection with the extension of the Note held by the Reporting Person, the Issuer issued the Reporting Person a warrant to purchase 46,250 shares of Common Stock at an exercise price of $3.00 per share. The warrant has a five-year term commencing on its date of issuance.

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