Solaris Energy Infrastructure, Inc.·4

Mar 3, 5:43 PM ET

Zartler William A 4

4 · Solaris Energy Infrastructure, Inc. · Filed Mar 3, 2026

Research Summary

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Solaris Energy (SEI) 10% Owner William Zartler Receives Awards

What Happened William A. Zartler, a 10% owner of Solaris Energy Infrastructure, Inc. (SEI), received two equity awards on March 1, 2026: 150,000 shares from a Restricted Stock Award and 115,656 shares from settled Performance-Based Restricted Stock Units (PSUs). Both transactions are reported as acquisitions at $0.00 per share (no cash paid), totaling 265,656 shares awarded/settled.

Key Details

  • Transaction date: 2026-03-01; Transaction type: Award/Grant (code A); Price reported: $0.00.
  • Awards: 150,000 shares (Restricted Stock Award) and 115,656 shares (PSU settlement) — total 265,656 shares.
  • Vesting: The Restricted Stock Award vests in three equal installments on the first three anniversaries of the grant date (footnote F1). The 115,656 shares reflect PSUs originally granted on Mar 1, 2023/2024/2025 that vested and settled based on performance (footnote F2).
  • Existing unvested awards: filing notes 387,755 shares of Class A common stock remain subject to vesting from previously granted Restricted Stock Awards (footnote F3).
  • Ownership structure notes: Zartler is the sole member of Solaris Energy Capital, which holds shares he can vote/ dispose of; he disclaims beneficial ownership beyond his pecuniary interest in those entity-held shares (footnote F5). Solaris LLC units noted are exchangeable for Class A shares per the Solaris LLC Agreement (footnote F6). Class B shares carry voting but no economic rights (footnote F4).
  • Timeliness: No late filing was indicated in the provided information.

Context

  • These were awards and PSU settlements, not open-market purchases or sales, so they represent compensation/performance settlement rather than a direct market bet by the insider. For retail investors, awards can dilute existing shares as they vest/settle; the Restricted Stock Award has multi-year vesting, while the PSUs reflect performance achievements for prior grant years.

Insider Transaction Report

Form 4
Period: 2026-03-01
Zartler William A
DirectorChairman and Co-CEO10% Owner
Transactions
  • Award

    Class A Common Stock

    [F1]
    2026-03-01+150,0001,199,227 total
  • Award

    Class A Common Stock

    [F2][F3]
    2026-03-01+115,6561,314,883 total
Holdings
  • Class B Common Stock

    [F4]
    726,819
  • Class B Common Stock

    [F4][F5]
    (indirect: See Footnote)
    3,513,496
  • Solaris Energy Infrastructure, LLC Units

    [F6]
    Class A Common Stock (726,819 underlying)
    726,819
  • Solaris Energy Infrastructure, LLC Units

    [F6][F5]
    (indirect: See Footnote)
    Class A Common Stock (3,513,496 underlying)
    3,513,496
Footnotes (6)
  • [F1]Restricted Stock Award granted pursuant to the Solaris Energy Infrastructure, Inc. Long Term Incentive Plan on the date indicated. The award vests in three equal installments on the first three anniversaries of the grant date.
  • [F2]Reflects the vesting and settlement of shares that relate to multiple Performance-Based Restricted Stock Unit (PSU) awards granted pursuant to the Solaris Energy Infrastructure, Inc. Long Term Incentive Plan. The PSUs which were originally granted on March 1, 2023, March 1, 2024 and March 1, 2025 vested and were settled based on the Issuer's level of achievement with respect to the applicable performance goals
  • [F3]Includes 387,755 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.
  • [F4]Each share of Class B common stock has no economic rights but entitles the holder to one vote on all matters to be voted on by the stockholders generally.
  • [F5]Represents shares held by Solaris Energy Capital. The Reporting Person is the sole member of Solaris Energy Capital and has the authority to vote or dispose of the shares held by Solaris Energy Capital in his sole discretion. The Reporting Person disclaims beneficial ownership of the shares held by Solaris Energy Capital in excess of his pecuniary interest therein.
  • [F6]Subject to the Solaris LLC Agreement, the Solaris LLC Units (together with a corresponding number of shares of Class B common stock) are exchangeable from time to time for shares of Class A common stock of the Issuer.
Signature
/s/ Christopher M. Powell, Attorney-in-Fact|2026-03-03

Documents

1 file
  • 4
    wk-form4_1772577783.xmlPrimary

    FORM 4