EROC · ERock, Inc. · Shareholders & Ownership

$7.99 -0.29 (-3.50%) At close · Oct 23

Russell 2000 member Rebalance outlook locked

Market Cap

$1.75B

219.40M

Volume · Oct 23 2.52M Avg daily vol (3M) 2.8M

Every disclosed holder of EROC in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns EROC

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	100	34,581,439	15.76%	Yes
Insiders (Forms 3, 4, 5)	0	0	0.00%	No
13D/G-only blocks	2	125,400,964	57.16%	Yes
Remaining	—	59,417,677	27.08%	Rest
Registered funds (N-PORT, not summed)	30	7,043,037	3.21%	No

Shares outstanding: 219,400,080, the issuer's latest cover-page count restated onto today's split basis.

Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of EROC

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	Energy Impact Partners LLC 13D CIK 2138137 · Unknown · Jun 11, 2026 Item 4 purpose: Passive investment	102,813,846	46.86%	—	Jun 11, 2026
1.1	Energy Impact Partners LLC Insider CIK 2138137 · Jun 11, 2026 10% Owner, issuer-wide, not summed	102,706,107	46.81%	+13,309,691	Jun 11, 2026	10% Owner, issuer-wide, not summed
2	Kobler Hans Insider CIK 1407324 · Jun 11, 2026 Director, 10% Owner, issuer-wide, not summed	102,706,107	46.81%	+13,309,691	Jun 11, 2026	Director, 10% Owner, issuer-wide, not summed
3	McAndrew Walter Thomas Jr. 13G CIK 2138568 · Unknown · Jun 11, 2026 Rule 13d-1(d), exempt investor	22,587,118	10.29%	—	Jun 11, 2026	Rule 13d-1(d), exempt investor
3.1	McAndrew Walter Thomas Jr. Insider CIK 2138568 · Jun 11, 2026 10% Owner, issuer-wide, not summed	22,587,118	10.29%	-414,566	Jun 11, 2026	10% Owner, issuer-wide, not summed
4	Amthor Corey Insider CIK 2134298 · Jun 11, 2026 President, issuer-wide, not summed	5,623,308	2.56%	-617,442	Jun 11, 2026	President, issuer-wide, not summed
5	Blakely Robert Ian Insider CIK 2134279 · Jun 11, 2026 Chief Financial Officer, issuer-wide, not summed	4,487,528	2.05%	-449,233	Jun 11, 2026	Chief Financial Officer, issuer-wide, not summed
6	PRICE T ROWE ASSOCIATES INC /MD/ 13F CIK 80255 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,275,983	1.04%	+2,275,983	Jun 30, 2026	carried, not yet filed for the newest quarter
6.1	T. Rowe Price Real Assets Fund, Inc. Fund S000029428 · Registered fund · Jun 30, 2026 T. ROWE PRICE REAL ASSETS FUND, INC., not summed	459,227	0.21%	—	Jun 30, 2026	T. ROWE PRICE REAL ASSETS FUND, INC., not summed
6.2	T. Rowe Price New Era Fund Fund S000002105 · Registered fund · Jun 30, 2026 T. ROWE PRICE NEW ERA FUND, INC., not summed	441,196	0.20%	—	Jun 30, 2026	T. ROWE PRICE NEW ERA FUND, INC., not summed
6.3	T. Rowe Price New Horizons Fund, Inc. Fund S000002106 · Registered fund · Jun 30, 2026 T. ROWE PRICE NEW HORIZONS FUND, INC., not summed	315,338	0.14%	—	Jun 30, 2026	T. ROWE PRICE NEW HORIZONS FUND, INC., not summed
6.4	T. Rowe Price Global Allocation Fund Fund S000040952 · Registered fund · Jul 31, 2026 T. ROWE PRICE GLOBAL ALLOCATION FUND, INC., not summed	1,491	0.00%	—	Jul 31, 2026	T. ROWE PRICE GLOBAL ALLOCATION FUND, INC., not summed
7	Balyasny Asset Management L.P. 13F CIK 1218710 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,099,619	0.96%	+2,099,619	Jun 30, 2026	carried, not yet filed for the newest quarter
8	Cinctive Capital Management LP 13F CIK 1787258 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,947,261	0.89%	+1,947,261	Jun 30, 2026	carried, not yet filed for the newest quarter
9	Encompass Capital Advisors LLC 13F CIK 1541901 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,900,000	0.87%	+1,900,000	Jun 30, 2026	carried, not yet filed for the newest quarter
10	Zimmer Partners, LP 13F CIK 1565854 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,891,745	0.86%	+1,891,745	Jun 30, 2026	carried, not yet filed for the newest quarter
11	AMERIPRISE FINANCIAL INC 13F CIK 820027 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,825,179	0.83%	+1,825,179	Jun 30, 2026	carried, not yet filed for the newest quarter
11.1	Columbia Variable Portfolio - Small Company Growth Fund Fund S000010658 · Registered fund · Jun 30, 2026 COLUMBIA FUNDS VARIABLE INSURANCE TRUST, not summed	107,500	0.05%	—	Jun 30, 2026	COLUMBIA FUNDS VARIABLE INSURANCE TRUST, not summed
12	MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 13F CIK 912938 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,776,265	0.81%	+1,776,265	Jun 30, 2026	carried, not yet filed for the newest quarter
12.1	MFS New Discovery Series Fund S000002680 · Registered fund · Jun 30, 2026 MFS VARIABLE INSURANCE TRUST, not summed	246,315	0.11%	—	Jun 30, 2026	MFS VARIABLE INSURANCE TRUST, not summed
12.2	MFS New Discovery Value Portfolio Fund S000023374 · Registered fund · Jun 30, 2026 MFS VARIABLE INSURANCE TRUST III, not summed	10,283	0.00%	—	Jun 30, 2026	MFS VARIABLE INSURANCE TRUST III, not summed
12.3	MFS Global Alternative Strategy Fund Fund S000019515 · Registered fund · Jul 31, 2026 MFS Series Trust XV, not summed	1,929	0.00%	—	Jul 31, 2026	MFS Series Trust XV, not summed
13	ALLIANCEBERNSTEIN L.P. 13F CIK 1109448 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,702,121	0.78%	+1,702,121	Jun 30, 2026	carried, not yet filed for the newest quarter
13.1	AB Small Cap Growth Portfolio Fund S000010309 · Registered fund · Jun 30, 2026 AB CAP FUND, INC., not summed	819,212	0.37%	—	Jun 30, 2026	AB CAP FUND, INC., not summed
13.2	AB Small Cap Growth Portfolio Fund S000010435 · Registered fund · Jun 30, 2026 AB VARIABLE PRODUCTS SERIES FUND, INC., not summed	15,694	0.01%	—	Jun 30, 2026	AB VARIABLE PRODUCTS SERIES FUND, INC., not summed
14	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,505,997	0.69%	+1,505,997	Jun 30, 2026	carried, not yet filed for the newest quarter
15	Value Aligned Research Advisors, LLC 13F CIK 1963565 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,345,920	0.61%	+1,345,920	Jun 30, 2026	carried, not yet filed for the newest quarter
16	Alyeska Investment Group, L.P. 13F CIK 1453072 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,276,391	0.58%	+1,276,391	Jun 30, 2026	carried, not yet filed for the newest quarter
17	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,116,375	0.51%	+1,116,375	Jun 30, 2026	carried, not yet filed for the newest quarter
18	Pictet Asset Management Holding SA 13F CIK 1993888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,056,681	0.48%	+1,056,681	Jun 30, 2026	carried, not yet filed for the newest quarter
19	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,030,728	0.47%	+1,030,728	Jun 30, 2026	carried, not yet filed for the newest quarter
20	CIBC Bancorp USA Inc. 13F CIK 1711924 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,000,000	0.46%	+1,000,000	Jun 30, 2026	carried, not yet filed for the newest quarter
21	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	919,592	0.42%	—	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
22	VANGUARD SMALL-CAP INDEX FUND Fund S000002845 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	662,699	0.30%	—	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
23	SEVEN GRAND MANAGERS, LLC 13F CIK 1909126 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	500,000	0.23%	+500,000	Jun 30, 2026	carried, not yet filed for the newest quarter
24	WELLINGTON MANAGEMENT GROUP LLP 13F CIK 902219 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	498,508	0.23%	+498,508	Jun 30, 2026	carried, not yet filed for the newest quarter
25	Reaves Utility Income Fund Fund · Registered fund · Jul 31, 2026 Reaves Utility Income Fund, not summed	435,000	0.20%	—	Jul 31, 2026	Reaves Utility Income Fund, not summed
26	REAVES W H & CO INC 13F CIK 740913 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	435,000	0.20%	+435,000	Jun 30, 2026	carried, not yet filed for the newest quarter
27	FRANKLIN RESOURCES INC 13F CIK 38777 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	434,932	0.20%	+434,932	Jun 30, 2026	carried, not yet filed for the newest quarter
27.1	Franklin Small Cap Growth Fund Fund S000006889 · Registered fund · Jul 31, 2026 Franklin Strategic Series, not summed	824,839	0.38%	—	Jul 31, 2026	Franklin Strategic Series, not summed
28	JANE STREET GROUP, LLC 13F CIK 1595888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	416,431	0.19%	+416,431	Jun 30, 2026	carried, not yet filed for the newest quarter
29	SmallCap Growth Fund I Fund S000007175 · Registered fund · Jul 31, 2026 Principal Funds, Inc, not summed	412,259	0.19%	—	Jul 31, 2026	Principal Funds, Inc, not summed
30	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	404,566	0.18%	+404,566	Jun 30, 2026	carried, not yet filed for the newest quarter
31	Ghisallo Capital Management LLC 13F CIK 1825214 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	400,000	0.18%	+400,000	Jun 30, 2026	carried, not yet filed for the newest quarter
32	SOROS FUND MANAGEMENT LLC 13F CIK 1029160 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	376,206	0.17%	+376,206	Jun 30, 2026	carried, not yet filed for the newest quarter
33	Burkehill Global Management, LP 13F CIK 1904549 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	375,000	0.17%	+375,000	Jun 30, 2026	carried, not yet filed for the newest quarter
34	ADAGE CAPITAL PARTNERS GP, L.L.C. 13F CIK 1165408 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	369,484	0.17%	+369,484	Jun 30, 2026	carried, not yet filed for the newest quarter
35	EAGLE GLOBAL ADVISORS LLC 13F CIK 1130787 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	365,000	0.17%	+365,000	Jun 30, 2026	carried, not yet filed for the newest quarter
36	BOOTHBAY FUND MANAGEMENT, LLC 13F CIK 1549230 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	339,153	0.15%	+339,153	Jun 30, 2026	carried, not yet filed for the newest quarter
37	Aventail Capital Group, LP 13F CIK 1803822 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	331,805	0.15%	+331,805	Jun 30, 2026	carried, not yet filed for the newest quarter
38	TUDOR INVESTMENT CORP ET AL 13F CIK 923093 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	305,002	0.14%	+305,002	Jun 30, 2026	carried, not yet filed for the newest quarter
39	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	281,364	0.13%	+281,364	Jun 30, 2026	carried, not yet filed for the newest quarter
40	Federated Hermes Kaufmann Small Cap Fund Fund S000009730 · Registered fund · Jul 31, 2026 Federated Hermes Equity Funds, not summed	281,141	0.13%	—	Jul 31, 2026	Federated Hermes Equity Funds, not summed
41	EMERALD ADVISERS, LLC 13F CIK 1015083 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	280,734	0.13%	+280,734	Jun 30, 2026	carried, not yet filed for the newest quarter
42	Bridge Builder Small/Mid Cap Value Fund Fund S000048337 · Registered fund · Jun 30, 2026 Bridge Builder Trust, not summed	273,895	0.12%	—	Jun 30, 2026	Bridge Builder Trust, not summed
43	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 13F CIK 1535845 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	265,000	0.12%	+265,000	Jun 30, 2026	carried, not yet filed for the newest quarter
44	Freestone Grove Partners LP 13F CIK 2007591 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	264,072	0.12%	+264,072	Jun 30, 2026	carried, not yet filed for the newest quarter
45	Yaupon Capital Management LP 13F CIK 1755028 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	250,000	0.11%	+250,000	Jun 30, 2026	carried, not yet filed for the newest quarter
46	Lighthouse Investment Partners, LLC 13F CIK 1600344 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	247,437	0.11%	+247,437	Jun 30, 2026	carried, not yet filed for the newest quarter
47	D. E. Shaw & Co., Inc. 13F CIK 1009207 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	225,000	0.10%	+225,000	Jun 30, 2026	carried, not yet filed for the newest quarter
48	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	210,239	0.10%	+210,239	Jun 30, 2026	carried, not yet filed for the newest quarter
49	VANGUARD SMALL-CAP VALUE INDEX FUND Fund S000002847 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	209,745	0.10%	—	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
50	BlueCrest Capital Management Ltd 13F CIK 1610880 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	200,000	0.09%	+200,000	Jun 30, 2026	carried, not yet filed for the newest quarter

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 128 holders

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Key facts CIK 2110029 CUSIP 296013105 13F (30d) 13 filings 13 filers Visit website Investor relations