Dennis P. Calvert - 30 Jun 2026 Form 4 Insider Report for BIOLARGO, INC. (BLGO)

Reporting relationship: President, Director
Issuer ticker: BLGO
Reported as of: 30 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 02 Jul 2026, 20:40:45 UTC
Prior SEC filing: 05 Jan 2026
Source filing: View source filing
Reporting owner signature: /s/ John R. Browning, attorney-in-fact

Key filing fact

Dennis P. Calvert filed Form 4 for BIOLARGO, INC. (BLGO) on 02 Jul 2026.

Key facts

This page summarizes Dennis P. Calvert's Form 4 filing for BIOLARGO, INC. (BLGO).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 02 Jul 2026, 20:40.

Change

Previous filing in this sequence was filed on 05 Jan 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001228572 Primary reporting owner

CALVERT DENNIS P

Relationship: President, Director
Address: 14921 CHESTNUT ST., WESTMINSTER
Signature: /s/ John R. Browning, attorney-in-fact
Signature date: 02 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

BLGO transaction

Common Stock

Award

Transaction value
Shares: +699,569
Change %: +6.9%
Price: $0.1135^*
Shares after: 10,838,194
Date: 30 Jun 2026
Ownership: Direct
Footnotes: F1, F2, F3

BLGO transaction

Common Stock

Award

Transaction value
Shares: +219,914
Change %: +2%
Price: $0.1130^*
Shares after: 11,058,108
Date: 01 Jul 2026
Ownership: Direct
Footnotes: F1, F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

The shares issued are subject to a Lock-Up Agreement dated as of the issuance date whereby shares are locked-up and restricted from sale until the Issuer reports gross revenue of at least $40 million on a consolidated basis for any reported period (e.g, quarter or annual), or the Issuer's market capitalization exceeds $300 million, or there is a "change in control" in the Issuer.

Footnote F2

Shares received from Issuer in exchange for a reduction in amounts owed by Issuer to Reporting Person for salary and unreimbursed business expenses (equal to the product of the number of shares issued and the acquisition price per share).

Footnote F3

Includes 1,528,695 shares owned indirectly by Reporting Person through a limited liability company owned and controlled by Reporting Person.