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Maureen O Helmer

Director · Plug Power

Maureen O Helmer (Director) filed 1 Form 4 report in the trailing twelve months (0 purchases, 1 sale), most often in Plug Power Inc. (PLUG). The largest single filing was $162K of PLUG (50,000 sh × $3.23, as filed), executed Jun 8. Data as of Nov 8 2026.

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Return, ttmiAverage return per filing, trailing twelve months
–
no purchases on file
Delay-adjustediThe same average, entered at disclosure dates
–
returns measure stock purchases only
Filings, ttm
1
0 buys · 1 sells
Median delay
–
measured on stock purchases
Volume, ttmiDollar value disclosed in the trailing twelve months
$162K
shares × price, as filed
Last traded
Jun 8
Filed Jun 10

Median ADV $115.1M across their filed names

Open performance→
Volume by month
$162K$81K$0Dec 2024Jun 2025Dec 2025Jun 2026Jun 2026 · sells $162K
Buys $0 Sells $162K

Shares × price, as filed · by filing month · past 24 months

Sectors filed on
Industrials 1 filing

Sector per market data · by filing · past 12 months

Most traded names
PLUG Plug Power Inc. PLUG · 0 buys · 1 sell 1 filing
Recent filings
PLUGSALE Plug Power Inc. View filing → $162K
50,000 sh × $3.23
Exec Jun 8
Filed Jun 10 · 5:30 PM ET