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Plug Power Inc. SEC filings

Plug Power filed 51 documents with the SEC in the last twelve months, the latest report being the 10-Q of 10 August 2026. The latest filing, on 15 October 2026, was an 8-K: results of operations.

Filings in twelve months5121 of them 8-K news
Latest report10-Qfiled 10 Aug 2026
Latest filing8-K15 Oct 2026
Last results, two-day move-3.4%results filed 15 Oct 2026
New to this? How to read this page
  1. Companies file with the SEC when something happens. 10-Q and 10-K are the quarterly and annual reports; 8-K is news that cannot wait for the next report.
  2. An 8-K says which items it covers, such as results, a change at the top or a big contract. A foreign company files a 6-K instead.
  3. The results release is usually an 8-K filed the day results come out, before the 10-Q or 10-K.
  4. Every filing links to the original on EDGAR, the SEC's own site.

Twelve months of filings

by kind

Most of the filings were proxy and other (26). Results came out 6 times.

Each mark is one filing on the day it was filed, in rows by kind. Hover or tap a mark for the form and what it was about.

The share price around each results release

close before to close after

Over the last 6 releases the share price moved 8.4% on average in the two days around results, the most on 2 Mar 2026 (+24.6%).

11 May 2026+14.1%$3.12 to $3.56
13 Jul 2026+1.8%$2.23 to $2.27
10 Aug 2026+1.8%$2.18 to $2.22
15 Oct 2026-3.4%$1.45 to $1.40
Daily closeResults filed

Each ring marks a results filing. The move runs from the last close before the filing to the first close after it, so it covers results released before the open or after the close. Hover the line for any day's close.

What the company told investors on 8-K

21 filings

Plug Power's 21 news filings (8-K) were mostly about other events (7) and results of operations (6).

  • Other eventsNews the company chose to file
    7 · latest 15 Jun 2026
  • Results of operationsThe quarterly results release
    6 · latest 15 Oct 2026
  • Regulation FD disclosureMaterial shared with investors, often slides or a presentation
    5 · latest 13 Jul 2026
  • Material agreementA large contract or deal was signed
    4 · latest 13 Jul 2026
  • Officer or director changeSomeone joined, left or changed role at the top
    3 · latest 23 Sep 2026
  • Shareholder voteResults of a vote at a shareholder meeting
    3 · latest 15 Jun 2026
  • Charter or bylaw amendment, or fiscal year changeThe company's rules or fiscal year changed
    1 · latest 13 Feb 2026
  • Termination of a material agreementA large contract ended
    1 · latest 21 Nov 2025
  • New financial obligationNew debt or a borrowing
    1 · latest 21 Nov 2025
  • Unregistered sale of equityShares sold privately
    1 · latest 21 Nov 2025

Each line is one kind of news, with what it means in plain words. Each square is one filing; a filing can carry more than one kind, so the squares can add up to more than the filings. The date opens the latest one on EDGAR.

How it compares

every company on the site

    The bar ranks every company on the site from the lowest on the left to the highest on the right, in three equal thirds; the small figures under it are the values where each third starts, and the black tick is the middle company. The orange dot is this company; the grey ticks are the other companies in its industry (hover or tap for names). A hatched block is companies tied at none.

    Every filing as a table

    In the last twelve months Plug Power Inc. filed 51 documents with the SEC of the kinds listed here: 21 current reports (8-K), about 7 other events; 6 results of operations; 5 regulation FD disclosure; 4 material agreement; 3 officer or director change; 19 additional proxy materials (DEFA14A), 3 quarterly reports (10-Q), 2 employee share plan registrations (S-8), 2 proxy statements (DEF 14A), 1 conflict minerals report (SD), 1 annual report to shareholders (ARS). The latest, filed 15 October 2026: 8-K, results of operations. The 10-K, the 10-Qs and the proxy statement themselves, each with a link to open it, are on the documents page.

    FiledFormWhat it was aboutPeriod or event dateFiling
    15 October 20268-KResults of operations15 October 2026EDGAR
    23 September 20268-KOfficer or director change17 September 2026EDGAR
    10 August 202610-Qquarterly report30 June 2026EDGAR
    10 August 20268-KResults of operations10 August 2026EDGAR
    13 July 20268-KMaterial agreement, Results of operations, Regulation FD disclosure9 July 2026EDGAR
    18 June 2026S-8employee share plan registrationEDGAR
    15 June 20268-KShareholder vote, Other events11 June 2026EDGAR
    11 June 20268-KRegulation FD disclosure11 June 2026EDGAR
    4 June 2026DEFA14Aadditional proxy materialEDGAR
    4 June 2026DEFA14Aadditional proxy materialEDGAR
    4 June 20268-KOfficer or director change2 June 2026EDGAR
    29 May 2026SDconflict minerals reportEDGAR
    11 May 202610-Qquarterly report31 March 2026EDGAR
    11 May 20268-KResults of operations11 May 2026EDGAR
    30 April 2026ARSannual report to shareholders31 December 2025EDGAR
    30 April 2026DEFA14Aadditional proxy materialEDGAR
    30 April 2026DEF 14Aproxy statement11 June 2026EDGAR
    10 March 20268-KOfficer or director change4 March 2026EDGAR
    6 March 2026S-8employee share plan registrationEDGAR
    2 March 202610-Kannual report31 December 2025EDGAR
    2 March 20268-KResults of operations2 March 2026EDGAR
    26 February 20268-KMaterial agreement, Other events24 February 2026EDGAR
    13 February 20268-KCharter or bylaw amendment, or fiscal year change, Shareholder vote12 February 2026EDGAR
    11 February 2026DEFA14Aadditional proxy materialEDGAR
    11 February 20268-KOther events11 February 2026EDGAR
    10 February 2026DEFA14Aadditional proxy materialEDGAR
    6 February 2026DEFA14Aadditional proxy materialEDGAR
    5 February 20268-KOther events5 February 2026EDGAR
    4 February 2026DEFA14Aadditional proxy materialEDGAR
    3 February 2026DEFA14Aadditional proxy materialEDGAR
    2 February 2026DEFA14Aadditional proxy materialEDGAR
    30 January 20268-KShareholder vote, Other events29 January 2026EDGAR
    30 January 2026DEFA14Aadditional proxy materialEDGAR
    29 January 2026DEFA14Aadditional proxy materialEDGAR
    27 January 2026DEFA14Aadditional proxy materialEDGAR
    23 January 2026DEFA14Aadditional proxy materialEDGAR
    6 January 20268-KMaterial agreement30 December 2025EDGAR
    31 December 2025DEFA14Aadditional proxy materialEDGAR
    22 December 2025DEFA14Aadditional proxy materialEDGAR
    17 December 2025DEFA14Aadditional proxy materialEDGAR
    12 December 2025DEF 14Aproxy statement29 January 2026EDGAR
    5 December 20258-KOther events3 December 2025EDGAR
    3 December 2025DEFA14Aadditional proxy materialEDGAR
    26 November 2025DEFA14Aadditional proxy materialEDGAR
    21 November 20258-KMaterial agreement, Termination of a material agreement, New financial obligation, Unregistered sale of equity, Other events18 November 2025EDGAR
    21 November 2025DEFA14Aadditional proxy materialEDGAR
    20 November 2025PRE 14Apreliminary proxy15 January 2026EDGAR
    18 November 20258-KRegulation FD disclosure18 November 2025EDGAR
    10 November 202510-Qquarterly report30 September 2025EDGAR
    10 November 20258-KResults of operations, Regulation FD disclosure10 November 2025EDGAR
    10 November 20258-KRegulation FD disclosure10 November 2025EDGAR
    An 8-K is what a company files within four business days of a material event; the SEC numbers the events, and the words here are the SEC's own headings, shortened.
    Read moreForm 4, Form 144, 13F and Schedule 13D and 13G have their own pages. Prospectus supplements and correspondence are not listed.