Dennis P. Calvert

CIK: 0001228572

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)6 (85.7%)

Compensation grants

Other (G, F, J, C, D, …)1 (14.3%)

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

Companies & Roles (1)

BLGO

BIOLARGO, INC.

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (7 total)

BLGO
BIOLARGO, INC.
Sep 30, 2026
Award(A)
Direct
931.9K shares at avg. $0.08$75K
BLGO
BIOLARGO, INC.
Sep 30, 2026
Gift(G)
Direct
2M shares-
BLGO
BIOLARGO, INC.
Jul 1, 2026
Award(A)
Direct
219.9K shares at avg. $0.11$25K
BLGO
BIOLARGO, INC.
Jun 30, 2026
Award(A)
Direct
699.6K shares at avg. $0.11$79K
BLGO
BIOLARGO, INC.
Dec 31, 2025
Award(A)
Direct
130.2K shares at avg. $0.18$24K
BLGO
BIOLARGO, INC.
Nov 14, 2025
Award(A)
Direct
310.3K shares at avg. $0.16$50K
BLGO
BIOLARGO, INC.
Jul 14, 2025
Award(A)
Direct
169.5K shares at avg. $0.20$34K

		Type	Shares	Price		Ownership
Sep 30, 2026	BLGO BIOLARGO, INC.	Award(A)	931,886	$0.08	$74,551	Direct
Sep 30, 2026	BLGO BIOLARGO, INC.	Gift(G)	2,000,000	-	$0	Direct
Jul 1, 2026	BLGO BIOLARGO, INC.	Award(A)	219,914	$0.11	$24,850	Direct
Jun 30, 2026	BLGO BIOLARGO, INC.	Award(A)	699,569	$0.11	$79,401	Direct
Dec 31, 2025	BLGO BIOLARGO, INC.	Award(A)	130,222	$0.18	$24,000	Direct
Nov 14, 2025	BLGO BIOLARGO, INC.	Award(A)	310,269	$0.16	$49,643	Direct
Jul 14, 2025	BLGO BIOLARGO, INC.	Award(A)	169,498	$0.20	$33,900	Direct

1-7 of 7 transactions

About CALVERT DENNIS P

CALVERT DENNIS P (SEC CIK 0001228572) files insider reports with the SEC as President of BIOLARGO, INC. (BLGO).

Signal8 holds 5 ownership filings by CALVERT DENNIS P, all Form 4s, filed between Jul 16, 2025 and Oct 2, 2026. Those filings report 7 transactions, from Jul 14, 2025 to Sep 30, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on CALVERT DENNIS P's filings is in WESTMINSTER, CA.

Recent filings by CALVERT DENNIS P

Sep 30, 2026: Grant or award of BLGO shares (Form 4, code A).
Sep 30, 2026: Gift of BLGO shares (Form 4, code G).
Jul 1, 2026: Grant or award of BLGO shares (Form 4, code A).
Jun 30, 2026: Grant or award of BLGO shares (Form 4, code A).
Dec 31, 2025: Grant or award of BLGO shares (Form 4, code A).

Other insiders filing for BIOLARGO, INC. (BLGO)

CODE KENNETH REAY, Chief Science Officer
Marshall Dennis E, Director
STROMMEN JACK B., Director
Bray Christina Elaine, Director
Park Linda, Director
DARGAN CHARLES K, Chief Financial Officer

How to read Form 4 transaction codes