Maureen O. Helmer

CIK: 0001279977

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)1 (11.1%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)8 (88.9%)

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)

PLUG

PLUG POWER INC

Director

Discretionary Trading P&L

Holdings

Transaction History (9 total)

PLUG
PLUG POWER INC
Jun 11, 2026
Award(A)
Direct
39.8K shares-
PLUG
PLUG POWER INC
Jun 8, 2026
Sale(S)
Direct
50K shares at avg. $3.23$162K
PLUG
PLUG POWER INC
Jan 2, 2026
Award(A)
Direct
14K shares at avg. $1.97$27K
PLUG
PLUG POWER INC
Oct 1, 2025
Award(A)
Direct
11.8K shares at avg. $2.33$28K
PLUG
PLUG POWER INC
Jul 3, 2025
Award(A)
Direct
76.5K shares-
PLUG
PLUG POWER INC
Jul 1, 2025
Award(A)
Direct
18.5K shares at avg. $1.49$27K
PLUG
PLUG POWER INC
Apr 1, 2025
Award(A)
Direct
20.4K shares at avg. $1.35$27K
PLUG
PLUG POWER INC
Jan 2, 2025
Award(A)
Direct
12.9K shares at avg. $2.13$28K
PLUG
PLUG POWER INC
Oct 1, 2024
Award(A)
Direct
12.2K shares at avg. $2.26$27K

		Type	Shares	Price		Ownership
Jun 11, 2026	PLUG PLUG POWER INC	Award(A)	39,753	-	$0	Direct
Jun 8, 2026	PLUG PLUG POWER INC	Sale(S)	50,000	$3.23	$161,620	Direct
Jan 2, 2026	PLUG PLUG POWER INC	Award(A)	13,959	$1.97	$27,499	Direct
Oct 1, 2025	PLUG PLUG POWER INC	Award(A)	11,803	$2.33	$27,501	Direct
Jul 3, 2025	PLUG PLUG POWER INC	Award(A)	76,531	-	-	Direct
Jul 1, 2025	PLUG PLUG POWER INC	Award(A)	18,456	$1.49	$27,499	Direct
Apr 1, 2025	PLUG PLUG POWER INC	Award(A)	20,370	$1.35	$27,500	Direct
Jan 2, 2025	PLUG PLUG POWER INC	Award(A)	12,911	$2.13	$27,500	Direct
Oct 1, 2024	PLUG PLUG POWER INC	Award(A)	12,168	$2.26	$27,500	Direct

1-9 of 9 transactions

About HELMER MAUREEN O

HELMER MAUREEN O (SEC CIK 0001279977) files insider reports with the SEC as Director of PLUG POWER INC (PLUG).

Signal8 holds 9 ownership filings by HELMER MAUREEN O, all Form 4s, filed between Oct 3, 2024 and Jun 16, 2026. Those filings report 9 transactions, from Oct 1, 2024 to Jun 11, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on HELMER MAUREEN O's filings is in SLINGERLANDS, NY.

Recent filings by HELMER MAUREEN O

Jun 11, 2026: Grant or award of PLUG shares (Form 4, code A).
Jun 8, 2026: Open-market sale of PLUG shares (Form 4, code S).
Jan 2, 2026: Grant or award of PLUG shares (Form 4, code A).
Oct 1, 2025: Grant or award of PLUG shares (Form 4, code A).
Jul 3, 2025: Grant or award of PLUG shares (Form 4, code A).

Other insiders filing for PLUG POWER INC (PLUG)

Haycraft Benjamin, CSO & GM EMEA
Angle Colin M, Director
Kenausis Gregory, Director
Joggerst Patrick, Director
BONNEY MARK J, Director
Marsh Andrew, Director

How to read Form 4 transaction codes