Ownership Submission
FORM 5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Form 3 Holdings Reported
Form 4 Transactions Reported
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

ANNUAL 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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1. Name and Address of Reporting Person *
DARGAN CHARLES K
 2. Issuer Name and Ticker or Trading Symbol
BIOLARGO, INC. [BLGO] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Financial Officer
(Last)
(First)
(Middle)

8055 W. MANCHESTER AVE., SUITE 405		 3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year)
12/31/2018
(Street)


PLAYA DEL REY, CA 90293		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Reporting
(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 at end of Issuer's Fiscal Year
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Amount (A) or (D) Price

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. 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. SEC 2270 (9-02)

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 at End of Issuer's Fiscal Year
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
(A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Option to Purchase Common Stock $ 0.39 12/31/2017   A4 300,000   12/31/2017(3) 12/31/2027 Common Stock
300,000
$ 0 (2) 3,046,000
D
 
Option to Purchase Common Stock $ 1.89 02/01/2018   J(1)   50,000 02/01/2008 02/01/2018 Common Stock
50,000
$ 0 (2) 2,996,000
D
 
Option to Purchase Common Stock $ 1.65 04/30/2008   J(1)   10,000 04/30/2008 04/30/2018 Common Stock
10,000
$ 0 (2) 2,986,000
D
 
Option to Purchase Common Stock $ 1.55 05/30/2008   J(1)   10,000 05/30/2008 05/30/2018 Common Stock
10,000
$ 0 (2) 2,976,000
D
 
Option to Purchase Common Stock $ 1.1 06/30/2008   J(1)   10,000 06/30/2008 06/30/2018 Common Stock
10,000
$ 0 (2) 2,966,000
D
 
Option to Purchase Common Stock $ 0.99 07/31/2008   J(1)   10,000 07/31/2008 07/31/2018 Common Stock
10,000
$ 0 (2) 2,956,000
D
 
Option to Purchase Common Stock $ 0.9 08/31/2008   J(1)   10,000 08/31/2008 08/31/2018 Common Stock
10,000
$ 0 (2) 2,946,000
D
 
Option to Purchase Common Stock $ 0.89 09/30/2008   J(1)   10,000 09/30/2008 09/30/2018 Common Stock
10,000
$ 0 (2) 2,936,000
D
 
Option to Purchase Common Stock $ 0.35 10/31/2008   J(1)   10,000 10/31/2008 10/31/2018 Common Stock
10,000
$ 0 (2) 2,926,000
D
 
Option to Purchase Common Stock $ 0.7 11/28/2008   J(1)   10,000 11/28/2008 11/28/2018 Common Stock
10,000
$ 0 (2) 2,916,000
D
 
Option to Purchase Common Stock $ 0.41 12/31/2008   J(1)   10,000 12/31/2008 12/31/2018 Common Stock
10,000
$ 0 (2) 2,906,000
D
 

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
DARGAN CHARLES K
8055 W. MANCHESTER AVE.
SUITE 405
PLAYA DEL REY, CA 90293		       Chief Financial Officer  

Signatures

/s/ John R. Browning, Attorney-in-fact 01/16/2019
**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) This Option held by Reporting Person expired unexercised on its expiration date.
(2) This Option was issued to the Reporting Person as compensation to serve as Issuer's Chief Financial Officer.
(3) One hundred thousand (100,000) shares are vested upon grant. Further shares vest in 25,000 increments beginning January 31, 2018, unless the Engagement Agreement between Reporting Person and Issuer is terminated.

Note: File three copies of this Form, one of which must be manually signed. If space provided is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.