Charles K. Dargan

CIK: 0001112799

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)3 (75.0%)

Compensation grants

Other (G, F, J, C, D, …)1 (25.0%)

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

Companies & Roles (1)

BLGO

BIOLARGO, INC.

Officer

Discretionary Trading P&L

Holdings

Transaction History (4 total)

BLGO
BIOLARGO, INC.
Feb 1, 2026
Award(A)
Option to Purchase Common Stock
Direct
300K shares-
BLGO
BIOLARGO, INC.
Sep 30, 2025
Other(J)
Option to Purchase Common Stock
Direct
300K shares at avg. $0.57-
BLGO
BIOLARGO, INC.
Sep 30, 2025
Award(A)
Option to Purchase Common Stock
Direct
1M shares-
BLGO
BIOLARGO, INC.
Feb 1, 2025
Award(A)
Option to Purchase Common Stock
Direct
300K shares-

		Type	Shares	Price		Ownership
Feb 1, 2026	BLGO BIOLARGO, INC.	Award(A) Option to Purchase Common Stock	300,000	-	-	Direct
Sep 30, 2025	BLGO BIOLARGO, INC.	Other(J) Option to Purchase Common Stock	300,000	$0.57	-	Direct
Sep 30, 2025	BLGO BIOLARGO, INC.	Award(A) Option to Purchase Common Stock	1,005,882	-	-	Direct
Feb 1, 2025	BLGO BIOLARGO, INC.	Award(A) Option to Purchase Common Stock	300,000	-	-	Direct

1-4 of 4 transactions

About DARGAN CHARLES K

DARGAN CHARLES K (SEC CIK 0001112799) files insider reports with the SEC as Chief Financial Officer of BIOLARGO, INC. (BLGO).

Signal8 holds 2 ownership filings by DARGAN CHARLES K (1 Form 4, 1 Form 5), filed on Feb 3, 2026. Those filings report 4 transactions, from Feb 1, 2025 to Feb 1, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on DARGAN CHARLES K's filings is in AVENTURA, FL.

Recent filings by DARGAN CHARLES K

Feb 1, 2026: Grant or award of BLGO derivative securities (Form 4, code A).
Sep 30, 2025: Other transaction of BLGO derivative securities (Form 5, code J).
Sep 30, 2025: Grant or award of BLGO derivative securities (Form 5, code A).
Feb 1, 2025: Grant or award of BLGO derivative securities (Form 5, code A).

Other insiders filing for BIOLARGO, INC. (BLGO)

CODE KENNETH REAY, Chief Science Officer
CALVERT DENNIS P, President
Marshall Dennis E, Director
STROMMEN JACK B., Director
Bray Christina Elaine, Director
Park Linda, Director

How to read Form 4 transaction codes