Dennis E. Marshall - 30 Sep 2025 Form 4 Insider Report for BIOLARGO, INC. (BLGO)

Role
Director
Signature
/s/ John R. Browning, attorney-in-fact
Issuer symbol
BLGO
Transactions as of
30 Sep 2025
Net transactions value
$0
Form type
4
Filing time
02 Oct 2025, 15:43:08 UTC
Previous filing
02 Jul 2025
Next filing
05 Jan 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Marshall Dennis E Director 14921 CHESTNUT ST., WESTMINSTER /s/ John R. Browning, attorney-in-fact 02 Oct 2025 0001361115

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction BLGO Option to Purchase Common Stock Award +132,351 +2.7% 4,957,267 30 Sep 2025 Common Stock 132,351 $0.1700 Direct F1, F2
transaction BLGO Option to Purchase Common Stock Award +110,294 +2.2% 5,067,561 30 Sep 2025 Common Stock 110,294 $0.1700 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 This Option was granted to Reporting Person to replace an option to purchase 34,615 shares that had been issued to compensate Reporting Person for $22,500 in services to the Issuer and had recently expired unexercised due to a discrepancy between the original exercise price and Issuer's current stock price, pursuant to plan adopted by the Issuer's Compensation Committee.
F2 Total reflects the expiration of options to purchase 34,615 shares that recently expired.
F3 This Option was issued to Reporting Person as payment for $18,750 in fees due to Reporting Person by Issuer in exchange for services on its board of directors for the most recently completed quarterly period, pursuant to the Issuer's 2024 Equity Incentive Plan.