Jack B. Strommen

CIK: 0001663146

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)8 (100.0%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

BLGO

BIOLARGO, INC.

Director

Discretionary Trading P&L

Holdings

Transaction History (8 total)

BLGO
BIOLARGO, INC.
Sep 30, 2026
Award(A)
Option to Purchase Common Stock
Direct
187.5K shares-
BLGO
BIOLARGO, INC.
Jun 30, 2026
Award(A)
Option to Purchase Common Stock
Direct
132.2K shares-
BLGO
BIOLARGO, INC.
Mar 31, 2026
Award(A)
Option to Purchase Common Stock
Direct
92.6K shares-
BLGO
BIOLARGO, INC.
Dec 31, 2025
Award(A)
Option to Purchase Common Stock
Direct
81.4K shares-
BLGO
BIOLARGO, INC.
Sep 30, 2025
Award(A)
Option to Purchase Common Stock
Direct
88.2K shares-
BLGO
BIOLARGO, INC.
Jun 30, 2025
Award(A)
Option to Purchase Common Stock
Direct
75K shares-
BLGO
BIOLARGO, INC.
Dec 31, 2024
Award(A)
Option to Purchase Common Stock
Direct
78.9K shares-
BLGO
BIOLARGO, INC.
Sep 30, 2024
Award(A)
Option to Purchase Common Stock
Direct
65.2K shares-

		Type	Shares	Price		Ownership
Sep 30, 2026	BLGO BIOLARGO, INC.	Award(A) Option to Purchase Common Stock	187,500	-	-	Direct
Jun 30, 2026	BLGO BIOLARGO, INC.	Award(A) Option to Purchase Common Stock	132,159	-	-	Direct
Mar 31, 2026	BLGO BIOLARGO, INC.	Award(A) Option to Purchase Common Stock	92,593	-	-	Direct
Dec 31, 2025	BLGO BIOLARGO, INC.	Award(A) Option to Purchase Common Stock	81,389	-	-	Direct
Sep 30, 2025	BLGO BIOLARGO, INC.	Award(A) Option to Purchase Common Stock	88,235	-	-	Direct
Jun 30, 2025	BLGO BIOLARGO, INC.	Award(A) Option to Purchase Common Stock	75,000	-	-	Direct
Dec 31, 2024	BLGO BIOLARGO, INC.	Award(A) Option to Purchase Common Stock	78,947	-	-	Direct
Sep 30, 2024	BLGO BIOLARGO, INC.	Award(A) Option to Purchase Common Stock	65,217	-	-	Direct

1-8 of 8 transactions

About STROMMEN JACK B.

STROMMEN JACK B. (SEC CIK 0001663146) files insider reports with the SEC as Director of BIOLARGO, INC. (BLGO).

Signal8 holds 8 ownership filings by STROMMEN JACK B., all Form 4s, filed between Oct 2, 2024 and Oct 2, 2026. Those filings report 8 transactions, from Sep 30, 2024 to Sep 30, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on STROMMEN JACK B.'s filings is in MINNEAPOLIS, MN.

Recent filings by STROMMEN JACK B.

Sep 30, 2026: Grant or award of BLGO derivative securities (Form 4, code A).
Jun 30, 2026: Grant or award of BLGO derivative securities (Form 4, code A).
Mar 31, 2026: Grant or award of BLGO derivative securities (Form 4, code A).
Dec 31, 2025: Grant or award of BLGO derivative securities (Form 4, code A).
Sep 30, 2025: Grant or award of BLGO derivative securities (Form 4, code A).

Other insiders filing for BIOLARGO, INC. (BLGO)

CODE KENNETH REAY, Chief Science Officer
CALVERT DENNIS P, President
Marshall Dennis E, Director
Bray Christina Elaine, Director
Park Linda, Director
DARGAN CHARLES K, Chief Financial Officer

How to read Form 4 transaction codes