ERock, Inc.: 5%+ holders

As of November 10, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of ERock, Inc. The largest reported stake is Energy Impact Partners LLC's, at 78.1%. 3 filings are on record since June 18, 2026 (Schedule 13D, June 18, 2026).

2 more records on ERock, Inc. ↓

Sell to companies like ERock, Inc? Enter your website and see 10 with a filed reason to buy from you this month. Free.

Your website Find my buyers

Opens in a new tab. No signup.

Key facts

• Filing 2026-09-04 · Reporting person: McAndrew Walter Thomas Jr. · Sole voting: 6,047,019 · Shared voting: 16,540,099 · Sole dispositive: 6,047,019 · Shared dispositive: 16,540,099 · SCHEDULE 13G/A, 2026-09-04
• Filed 2026-08-14 · Holder: McAndrew Walter Thomas Jr. · Percent: 31.9% · SCHEDULE 13G
• Filing 2026-06-18 · Reporting person: Energy Impact Partners LLC · Sole voting: 0 · Shared voting: 102,813,846 · Sole dispositive: 0 · Shared dispositive: 102,813,846 · SCHEDULE 13D, 2026-06-18

ERock, Inc. has 3 Schedule 13D or 13G filings on record since 2026-06-18. 2 holders' latest filing reports 5% or more of class a common stock, $0.01 par value per share. Each figure below is the holder's own, as filed, with the filing linked.

Holders

Swipe the table sideways to see every column.

Holding shares or following this stake? See who's behind ERock, Inc. and the warning signs.

See ERock, Inc.'s free Snapshot Watch ERock, Inc.: email me the next time it files something

Free to see. No signup.

Keep reading

More on ERock, Inc. and the records around it.

ERock, Inc. elsewhere on the record

• Leadership changes Jun 2026
• Who owns it

Want the whole picture on ERock, Inc.?

Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News

A Full Report on ERock, Inc.: verified, sourced, every claim cited, ready in a few minutes. See pricing.

What the Full Report on ERock, Inc. covers

1. The Short Answer

2. Which Company This Is

3. What They Do, And How The Money Works

4. Who Runs It, And How To Reach Them

5. The Money: Funding, Valuation, Runway

6. Who Pays Them, And Who They Are Up Against

7. Warning Bells

8. Sources

   9 cited sources found

Plus the sections for what you are deciding, which you pick after ordering.

Order Full ReportSee a sample report

A real finished report, first screen. Opens in a new tab.

Voting and dispositive power, as filed

Swipe the table sideways to see every column.

The latest filing identifies ERock, Inc. by CUSIP 296013105 and gives its principal executive office as 1113 VINE ST., SUITE 101, HOUSTON, TX 77002 (SCHEDULE 13G/A, 2026-09-04).

What the percentages are based on

W.T. McAndrew: 31.9% (1) McAndrew Holdings: 25.6% (2) General Partner: 25.6% (2) J.W. McAndrew: 25.6% (2) (1) The denominator used to calculate W.T. McAndrew's percentage of beneficial ownership consists of the (i) 48,174,023 Class A Shares reported by the Issuer as being outstanding as of August 7, 2026, as reported by the Issuer in the Quarterly Report, and (ii) 22,536,568 Class A Shares that W.T.McAndrew Walter Thomas Jr., SCHEDULE 13G/A, 2026-09-04

Source of funds (Item 3)

Each of FT-B and Flagship were pre-Offering owners of Enchanted Rock Holdings, LLC. FT-B was formed in February 2017 for the principal purpose of indirectly holding equity interests in Enchanted Rock Holdings, LLC and, for a time, other entities. Flagship was formed in April 2025 for the principal purpose of directly holding equity interests in Enchanted Rock Holdings, LLC. On December 27, 2024, pursuant to the 2024 Note Purchase Agreement (as defined in the Prospectus), certain of the Reporting Persons purchased the $10.0 million December 2024 Convertible Note (as defined in the Prospectus).Energy Impact Partners LLC, SCHEDULE 13D, 2026-06-18

Purpose of Transaction (Item 4)

Energy Impact Partners LLC

The information set forth in Item 3 of this Statement is incorporated herein by reference. The Reporting Persons hold the securities of the Issuer for general investment purposes. The Reporting Persons may, from time to time, depending on prevailing market, economic and other conditions, acquire additional shares of Class A common stock or other securities of the Issuer, dispose of any such securities, or engage in discussions with the Issuer concerning such acquisitions or dispositions or further investments in the Issuer. The Reporting Persons intend to review their investment in the Issuer on a continuing basis and, depending upon the price and availability of shares of Class A common stock or other securities of the Issuer, subsequent developments affecting the Issuer, the Issuer's business and prospects, other investment and business opportunities available to the Reporting Persons, general stock market and economic conditions, tax considerations and other factors considered relevant, may decide at any time to increase or to decrease the size of their investment in the Issuer in the open market, in privately negotiated transactions, pursuant to 10b5-1 trading plans or otherwise. Except as set forth above, the Reporting Persons have no present plans or intentions which would result in or relate to any of the transactions described in subparagraphs (a) through (j) of Item 4 of Schedule 13D.Item 4 of the SCHEDULE 13D filed 2026-06-18

Timeline

Swipe the table sideways to see every column.

Questions about who owns ERock, Inc.

Who owns ERock, Inc.?

On this page, 2 holders' latest ownership filings report 5% or more of ERock, Inc.: Energy Impact Partners LLC (78.1%, Schedule 13D, filed 2026-06-18) and McAndrew Walter Thomas Jr. (31.9%, Schedule 13G/A, filed 2026-09-04).

Who are the largest shareholders of ERock, Inc.?

By the share each holder's latest filing reports, the largest holders of ERock, Inc. on this page are Energy Impact Partners LLC (78.1%) and McAndrew Walter Thomas Jr. (31.9%).

When did Energy Impact Partners LLC buy into ERock, Inc.?

The filings give report dates, not purchase dates. The earliest filing from Energy Impact Partners LLC on this page is the Schedule 13D, filed 2026-06-18, reporting 78.1%.

Is this an audit or a full list?

Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 3 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.

Also on the record for ERock, Inc.

Swipe the table sideways to see every column.

Tools for this story

Each opens in a new tab, filled in for ERock, Inc.. With no account yet, you sign up free and land on the result.

• Get an alert when ERock, Inc. is mentioned again
• Find former ERock, Inc. employees to interview
• Verify a claim or statistic

Where this comes from

Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.

Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.

All recent stakesThat week's stakes