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Biolargo, Inc. (BLGO)

Biolargo, Inc. (BLGO) Insider Trading

Directors, officers and holders of more than 10% of BLGO report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 61 transactions on file: 0 with code P, 0 with code S and 50 with other codes.

DateInsiderCodeShares
Sep 30, 2026Park LindaA Award234,375
Sep 30, 2026Marshall Dennis EA Award281,248
Sep 30, 2026Marshall Dennis EA Award234,375
Sep 30, 2026STROMMEN JACK B.A Award187,500
Sep 30, 2026Bray Christina ElaineA Award234,375
Sep 30, 2026CODE KENNETH REAYA Award566,261
Sep 30, 2026CODE KENNETH REAYG Gift2,000,000
Sep 30, 2026CALVERT DENNIS PA Award931,886
Sep 30, 2026CALVERT DENNIS PG Gift2,000,000
Jul 7, 2026CODE KENNETH REAYA Award532,567
Jul 1, 2026CALVERT DENNIS PA Award219,914
Jun 30, 2026Bray Christina ElaineA Award165,198
Jun 30, 2026Park LindaA Award165,198
Jun 30, 2026STROMMEN JACK B.A Award132,159
Jun 30, 2026Marshall Dennis EA Award115,741
Jun 30, 2026Marshall Dennis EA Award198,238
Jun 30, 2026CALVERT DENNIS PA Award699,569
Jun 22, 2026Marshall Dennis EA Award40,909
Mar 31, 2026Marshall Dennis EA Award115,741
Mar 31, 2026Marshall Dennis EA Award138,889
Mar 31, 2026CODE KENNETH REAYA Award69,444
Mar 31, 2026Park LindaA Award115,741
Mar 31, 2026Bray Christina ElaineA Award115,741
Mar 31, 2026STROMMEN JACK B.A Award92,593
Feb 1, 2026DARGAN CHARLES KA Award300,000
Dec 31, 2025CODE KENNETH REAYA Award54,803
Dec 31, 2025CALVERT DENNIS PA Award130,222
Dec 31, 2025Park LindaA Award101,736
Dec 31, 2025Marshall Dennis EA Award122,084
Dec 31, 2025Marshall Dennis EA Award101,736
Dec 31, 2025Bray Christina ElaineA Award101,736
Dec 31, 2025STROMMEN JACK B.A Award81,389
Nov 14, 2025CODE KENNETH REAYA Award313,754
Nov 14, 2025CALVERT DENNIS PA Award310,269
Sep 30, 2025Marshall Dennis EA Award110,294
Sep 30, 2025DARGAN CHARLES KJ Other300,000
Sep 30, 2025Park LindaA Award110,294
Sep 30, 2025Bray Christina ElaineA Award110,294
Sep 30, 2025DARGAN CHARLES KA Award1,005,882
Sep 30, 2025STROMMEN JACK B.A Award88,235
Sep 30, 2025Marshall Dennis EA Award132,351
Jul 14, 2025CALVERT DENNIS PA Award169,498
Jul 14, 2025CODE KENNETH REAYA Award181,253
Jun 30, 2025Marshall Dennis EA Award112,501
Jun 30, 2025Bray Christina ElaineA Award93,750
Jun 30, 2025STROMMEN JACK B.A Award75,000
Jun 30, 2025Park LindaA Award93,750
Jun 30, 2025Marshall Dennis EA Award93,750
Jun 30, 2025Marshall Dennis EA Award19,000
Feb 1, 2025DARGAN CHARLES KA Award300,000

The full Form 4 history is on the BLGO company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.