Activity Companies Alerts About

William A. Zartler owns 7.26% of Solaris Energy Infrastructure

5,555,198 shares as of the March 1, 2026 filing, worth $349M at the latest close.

SEI · $4.8B market cap · Founder-led
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Free.
The stake
7.26%
worth $349M at the latest close
Stake rank
#198
by dollar value of the stake
Last sale
1,403 days ago
Dec 16, 2022
Last buy
405 days ago
Sep 9, 2025 · $248,300

William A. Zartler owns 7.26% of Solaris Energy Infrastructure, Inc.: 5,555,198 of 76,566,392 shares, worth about $349M at the 2026-10-16 close. The stake has moved from 0.00% in 2017 to 7.26% on 2026-06-30, across 5 sales and 8 purchases that moved it since 2016. The last trade that moved it was a discretionary purchase of $248,300 on 2025-09-09.

How the stake is held

each class as its filings last stated it
SHARES
OF THE STAKE
CLASS B · stated Mar 1, 2026 · Form 4 ↗
4,240,315
76.3%
HELD DIRECTLY
726,819
13.1%
HELD INDIRECTLY · Indirect, per the filing’s footnote
3,513,496
63.2%
CLASS A · stated Mar 1, 2026 · Form 4 ↗
1,314,883
23.7%
HELD DIRECTLY
1,314,883
23.7%
THE STAKE
5,555,198
7.26%

Ownership is held through paired Class B Common Stock shares, one per unit of the operating partnership, exchangeable into the public stock and counted here one for one; the cover page counts them too.