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
                                                                                  
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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 *

Gregoriou Vassilios		 2. Issuer Name and Ticker or Trading Symbol

ADVENT TECHNOLOGIES HOLDINGS, INC. [ ADN ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

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

200 CLARENDON STREET, 25TH FLOOR		 3. Date of Earliest Transaction (MM/DD/YYYY)

7/12/2022
(Street)

BOSTON, MA 02116
(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
Common Stock (1)7/12/2022  A  175000 (2)A$0.00 6562624 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
Employee Stock Options (right to buy) (3)$2.74 7/12/2022  A   175000    7/12/2023 (4)7/12/2032 Common Stock 175000 $0.00 175000 D  
Employee Stock Options (right to buy) $10.36           2/4/2022 6/11/2021 Common Stock 922118  922118 D  
Explanation of Responses:
(1) Restricted stock units ("RSUs"), representing a contingent right to receive common stock, granted pursuant to Issuer's 2021 Equity Incentive Plan, dated February 4, 2021 (the "Plan").
(2) RSUs are a common stock equivalent that may be settled solely by delivery of an equal number of shares of Issuer's common stock. They vest 25% over four years on each anniversary of the grant date and will be fully vested on July 12, 2026.
(3) Employee stock options (right to buy) ("Options") granted pursuant to the Plan.
(4) Options vest 25% over four years on each anniversary of the grant date and will be fully vested as of July 12, 2026.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Gregoriou Vassilios
200 CLARENDON STREET
25TH FLOOR
BOSTON, MA 02116		XXCEO, Chair
Signatures
/s/ Vassilios Gregoriou7/15/2022
**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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