Marsh Andrew 4

What Happened

• Andrew Marsh, a director of Plug Power Inc. (PLUG), was granted two derivative equity awards in March 2026: 163,638 option shares on March 2, 2026, and 87,260 option shares on March 31, 2026 (total 250,898). Each grant is reported at $0.00 (typical for stock option or award grants) — these are awards, not open-market purchases or sales.

Key Details

• Transaction dates and reported prices: Mar 2, 2026 — 163,638 shares @ $0.00 (award); Mar 31, 2026 — 87,260 shares @ $0.00 (award).
• Transaction type: A = Award/Grant (derivative awards / stock options), not an immediate sale or cash purchase.
• Shares owned after transaction: Not specified in the excerpted filing.
• Footnotes of note:
  • F1: Awards granted under Plug Power’s 2021 Stock Option & Incentive Plan.
  • F2: The Mar 2 award was issued under a Non‑Executive Chairman Agreement as a one‑time stock option; underlying shares vest in full on March 2, 2027, subject to continued service.
  • F3: The Mar 31 award was issued under a Transitional Consulting Agreement as a quarterly equity award; underlying shares vest in three equal annual installments beginning on the first anniversary of the grant, subject to continued service.
• Filing timeliness: The Form 4 was filed on 2026-06-16 covering a reportable transaction on 2026-03-02 and 2026-03-31 — this is later than the usual two-business-day filing window (i.e., late).

Context

• These entries are derivative awards (stock options/awards) with vesting schedules; they do not represent immediate sales or purchases of common stock and therefore do not provide an immediate change in market exposure. Vesting conditions tie future ownership to continued service, so the awards only convert to actual shares over time if Marsh remains in service and any vesting conditions are met.