RPC · Ridgepost Capital, Inc. · Shareholders & Ownership

$8.86 +0.39 (+4.60%)

Russell 2000 member Rebalance outlook locked

Market Cap

$933.72M

110.24M

Volume · Oct 22 460.7K Avg daily vol (3M) 554.56K

Every disclosed holder of RPC 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 RPC

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)	139	48,885,062	44.34%	Yes
Insiders (Forms 3, 4, 5)	0	0	0.00%	No
13D/G-only blocks	10	45,273,833	41.07%	Yes
Remaining	—	16,079,545	14.59%	Rest
Registered funds (N-PORT, not summed)	138	29,495,101	26.76%	No

Shares outstanding: 110,238,440, 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 RPC

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	RJDT Holdings, L.P. 13G CIK 2145182 · Unknown · Jun 22, 2026 Rule 13d-1(c), passive investor	10,262,278	9.31%	—	Jun 22, 2026	Rule 13d-1(c), passive investor
2	Williams Mel Insider CIK 1890819 · Sep 3, 2026 10% Owner, issuer-wide, not summed	8,572,686	7.78%	+4,399,554	Sep 3, 2026	10% Owner, issuer-wide, not summed
3	Souder Family LLC 13G CIK 1889346 · Unknown · Dec 31, 2024 Rule 13d-1(d), exempt investor	5,076,956	4.61%	—	Dec 31, 2024	Rule 13d-1(d), exempt investor
4	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	4,452,743	4.04%	+449,703	Jun 30, 2026	carried, not yet filed for the newest quarter
4.1	BlackRock, Inc. 13G CIK 2012383 · Holding company · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	4,147,300	3.76%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
4.2	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	1,569,337	1.42%	+137,951	Jun 30, 2026	iShares Trust, not summed
4.3	iShares Russell 2000 Growth ETF Fund S000004343 · Registered fund · Jun 30, 2026 iShares Trust, not summed	567,269	0.51%	+94,295	Jun 30, 2026	iShares Trust, not summed
4.4	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	106,480	0.10%	+15,146	Jun 30, 2026	Quantitative Master Series LLC, not summed
4.5	iShares Core S&P Total U.S. Stock Market ETF Fund S000004317 · Registered fund · Jun 30, 2026 iShares Trust, not summed	88,601	0.08%	+2,176	Jun 30, 2026	iShares Trust, not summed
5	Capital World Investors 13F CIK 1422849 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,892,773	3.53%	+102,220	Jun 30, 2026	carried, not yet filed for the newest quarter
6	CAZ INVESTMENTS LP 13F CIK 1159363 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,855,757	3.50%	+3,855,757	Jun 30, 2026	carried, not yet filed for the newest quarter
7	SMALLCAP World Fund Inc Fund S000009599 · Registered fund · Jun 30, 2026 SMALLCAP World Fund Inc, not summed	3,790,553	3.44%	0	Jun 30, 2026	SMALLCAP World Fund Inc, not summed
8	NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 13F CIK 921739 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,605,148	3.27%	+6,764	Jun 30, 2026	carried, not yet filed for the newest quarter
8.1	Nomura Small Cap Value Fund Fund S000002401 · Registered fund · May 29, 2026 Delaware Group Equity Funds V, not summed	2,328,203	2.11%	+307,100	May 29, 2026	Delaware Group Equity Funds V, not summed
8.2	Nomura VIP Small Cap Value Series Fund S000002475 · Registered fund · Jun 30, 2026 Delaware VIP Trust, not summed	1,223,190	1.11%	+34,950	Jun 30, 2026	Delaware VIP Trust, not summed
9	River Road Asset Management, LLC 13F CIK 1341401 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,250,951	2.95%	-136,193	Jun 30, 2026	carried, not yet filed for the newest quarter
10	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	3,228,648	2.93%	-2,098,007	Jun 30, 2026	carried, not yet filed for the newest quarter
10.1	FMR LLC 13G CIK 315066 · Holding company · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	3,228,647	2.93%	-2,098,008	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
10.2	Fidelity Small Cap Growth Fund Fund S000007193 · Registered fund · Jul 31, 2026 Fidelity Securities Fund, not summed	2,007,536	1.82%	0	Jul 31, 2026	Fidelity Securities Fund, not summed
10.3	Fidelity Small Cap Growth K6 Fund Fund S000057285 · Registered fund · Jul 31, 2026 Fidelity Securities Fund, not summed	1,004,844	0.91%	0	Jul 31, 2026	Fidelity Securities Fund, not summed
10.4	Fidelity Small Cap Index Fund Fund S000033638 · Registered fund · Jul 31, 2026 Fidelity Salem Street Trust, not summed	659,089	0.60%	+83,123	Jul 31, 2026	Fidelity Salem Street Trust, not summed
10.5	Strategic Advisers U.S. Total Stock Fund Fund S000084926 · Registered fund · May 31, 2026 Fidelity Rutland Square Trust II, not summed	460,263	0.42%	-96,835	May 31, 2026	Fidelity Rutland Square Trust II, not summed
11	Poston Edwin A. Insider CIK 1888753 · Feb 14, 2026 Director, issuer-wide, not summed	3,043,855	2.76%	-52,866	Feb 14, 2026	Director, issuer-wide, not summed
11.1	Mel Williams 13G CIK 1888753 · Unknown · Dec 31, 2025 Rule 13d-1(d), exempt investor	8,547,585	7.75%	-325,495	Dec 31, 2025	Rule 13d-1(d), exempt investor
12	210 Capital, LLC 13D CIK 1694780 · Unknown · Jan 21, 2025	2,996,537	2.72%	-913,875	Jan 21, 2025
12.1	210 Capital, LLC Insider CIK 1694780 · Dec 18, 2024 Insider, issuer-wide, not summed	4,967,397	4.51%	+4,917,397	Dec 18, 2024	Insider, issuer-wide, not summed
13	MACQUARIE GROUP LTD 13G CIK 1418333 · Unknown · Mar 31, 2025 Rule 13d-1(b), qualified institution	2,936,400	2.66%	+64,959	Mar 31, 2025	Rule 13d-1(b), qualified institution
14	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,876,221	2.61%	+142,303	Jun 30, 2026	carried, not yet filed for the newest quarter
15	JPMORGAN CHASE & CO 13F CIK 19617 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	2,770,943	2.51%	+44,609	Jun 30, 2026	carried, not yet filed for the newest quarter
16	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,767,362	2.51%	-8,263	Jun 30, 2026	carried, not yet filed for the newest quarter
17	FEDERATED HERMES, INC. 13G CIK 1056288 · Investment adviser · Jan 31, 2024	2,600,000	2.36%	-581,933	Jan 31, 2024
18	MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 13F CIK 912938 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,490,717	2.26%	-130,442	Jun 30, 2026	carried, not yet filed for the newest quarter
18.1	MFS New Discovery Value Fund Fund S000032712 · Registered fund · May 31, 2026 MFS SERIES TRUST XIII, not summed	1,725,105	1.56%	-175,130	May 31, 2026	MFS SERIES TRUST XIII, not summed
18.2	MFS New Discovery Value Portfolio Fund S000023374 · Registered fund · Jun 30, 2026 MFS VARIABLE INSURANCE TRUST III, not summed	29,956	0.03%	-1,841	Jun 30, 2026	MFS VARIABLE INSURANCE TRUST III, not summed
18.3	MFS Global Alternative Strategy Fund Fund S000019515 · Registered fund · Jul 31, 2026 MFS Series Trust XV, not summed	3,995	0.00%	-492	Jul 31, 2026	MFS Series Trust XV, not summed
19	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	1,990,399	1.81%	0	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
20	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	1,722,503	1.56%	+57,543	Jun 30, 2026	carried, not yet filed for the newest quarter
20.1	State Street(R) SPDR(R) S&P(R) Capital Markets ETF Fund S000006978 · Registered fund · Jun 30, 2026 SPDR SERIES TRUST, not summed	339,455	0.31%	-86,609	Jun 30, 2026	SPDR SERIES TRUST, not summed
20.2	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	20,800	0.02%	-3,400	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
20.3	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	1,388	0.00%	0	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
20.4	State Street Balanced Index Fund Fund S000082802 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	283	0.00%	0	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
21	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,551,349	1.41%	+96,533	Jun 30, 2026	carried, not yet filed for the newest quarter
22	VANGUARD SMALL-CAP INDEX FUND Fund S000002845 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	1,433,634	1.30%	-685	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
23	Conversant Capital LLC 13G CIK 1850901 · Registered investment adviser · Dec 31, 2023 Rule 13d-1(c), passive investor	1,295,184	1.17%	—	Dec 31, 2023	Rule 13d-1(c), passive investor
24	JPMorgan Small Cap Equity Fund Fund S000002794 · Registered fund · Jun 30, 2026 JPMorgan Trust I, not summed	1,161,291	1.05%	+28,084	Jun 30, 2026	JPMorgan Trust I, not summed
25	CAZ GP Stakes Fund Fund · Registered fund · Jun 30, 2026 Caz GP Stakes Fund, not summed	1,080,500	0.98%	—	Jun 30, 2026	Caz GP Stakes Fund, not summed
26	VANGUARD SMALL-CAP VALUE INDEX FUND Fund S000002847 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	909,077	0.82%	+450,717	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
27	Samjo Management, LLC 13F CIK 1986590 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	865,605	0.79%	+165,970	Jun 30, 2026	carried, not yet filed for the newest quarter
28	DEPRINCE RACE & ZOLLO INC 13F CIK 1008894 · Registered investment adviser · Sep 30, 2026	857,100	0.78%	+154,784	Sep 30, 2026
29	Bridge Builder Small/Mid Cap Value Fund Fund S000048337 · Registered fund · Jun 30, 2026 Bridge Builder Trust, not summed	792,812	0.72%	-2,642	Jun 30, 2026	Bridge Builder Trust, not summed
30	AMG River Road Small Cap Value Fund Fund S000001130 · Registered fund · Jul 31, 2026 AMG Funds IV, not summed	781,862	0.71%	-77,628	Jul 31, 2026	AMG Funds IV, not summed
31	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	711,384	0.65%	-3,291	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
32	Russell Investments Group, Ltd. 13F CIK 1692234 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	632,863	0.57%	+141,055	Jun 30, 2026	carried, not yet filed for the newest quarter
32.1	U.S. Small Cap Equity Fund Fund S000001586 · Registered fund · Jul 31, 2026 RUSSELL INVESTMENT CO, not summed	264,263	0.24%	0	Jul 31, 2026	RUSSELL INVESTMENT CO, not summed
32.2	U.S. Small Cap Equity Fund Fund S000006864 · Registered fund · Jun 30, 2026 RUSSELL INVESTMENT FUNDS, not summed	61,827	0.06%	+11,200	Jun 30, 2026	RUSSELL INVESTMENT FUNDS, not summed
32.3	Russell Investments U.S. Small Cap Equity ETF Fund S000089990 · Registered fund · Jun 30, 2026 Russell Investments Exchange Traded Funds, not summed	22,266	0.02%	—	Jun 30, 2026	Russell Investments Exchange Traded Funds, not summed
33	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	602,041	0.55%	+45,863	Jun 30, 2026	carried, not yet filed for the newest quarter
33.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	30,823	0.03%	+5,308	Jun 30, 2026	Northern Funds, not summed
34	D. E. Shaw & Co., Inc. 13F CIK 1009207 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	584,629	0.53%	+584,629	Jun 30, 2026	carried, not yet filed for the newest quarter
35	T. Rowe Price Investment Management, Inc. 13G CIK 1897612 · Investment adviser · Apr 30, 2024	561,186	0.51%	-4,930,188	Apr 30, 2024
36	AMERICAN FINANCIAL GROUP INC 13F CIK 1042046 · Insurance company · Jun 30, 2026 carried, not yet filed for the newest quarter	540,000	0.49%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
37	AQR CAPITAL MANAGEMENT LLC 13F CIK 1167557 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	534,491	0.48%	+329,771	Jun 30, 2026	carried, not yet filed for the newest quarter
37.1	AQR Small Cap Multi-Style Fund Fund S000040064 · Registered fund · Jun 30, 2026 AQR Funds, not summed	25,502	0.02%	—	Jun 30, 2026	AQR Funds, not summed
38	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	521,280	0.47%	+13,507	Jun 30, 2026	carried, not yet filed for the newest quarter
38.1	Schwab U.S. Small-Cap ETF Fund S000026636 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	298,331	0.27%	-4,796	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
38.2	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	147,410	0.13%	+17,810	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
38.3	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	37,410	0.03%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
38.4	Schwab U.S. Broad Market ETF Fund S000026631 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	36,695	0.03%	+479	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
39	ALGERT GLOBAL LLC 13F CIK 1275218 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	515,071	0.47%	+515,071	Jun 30, 2026	carried, not yet filed for the newest quarter
40	Nuveen, LLC 13F CIK 1871926 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	505,620	0.46%	+2,424	Jun 30, 2026	carried, not yet filed for the newest quarter
40.1	Nuveen Quant Small Cap Equity Fund Fund S000005386 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	375,080	0.34%	-7,430	Jul 31, 2026	TIAA-CREF Funds, not summed
40.2	Nuveen Small Cap Blend Index Fund Fund S000005367 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	80,828	0.07%	+10,165	Jul 31, 2026	TIAA-CREF Funds, not summed
40.3	Nuveen Equity Index Fund Fund S000005360 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	37,666	0.03%	0	Jul 31, 2026	TIAA-CREF Funds, not summed
40.4	Nuveen Life Small Cap Equity Fund Fund S000005093 · Registered fund · Jun 30, 2026 TIAA-CREF Life Funds, not summed	7,797	0.01%	-194	Jun 30, 2026	TIAA-CREF Life Funds, not summed
40.5	TIAA Separate Account VA-1 - Stock Index Account Fund S000005098 · Registered fund · Jun 30, 2026 TIAA Separate Account VA-1, not summed	1,141	0.00%	0	Jun 30, 2026	TIAA Separate Account VA-1, not summed
41	Jon I. Madorsky Revocable Trust dated December 1, 2008 Insider CIK 1895437 · Feb 14, 2026 Insider, issuer-wide, not summed	476,826	0.43%	+31,252	Feb 14, 2026	Insider, issuer-wide, not summed
42	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	450,559	0.41%	+8,725	Jun 30, 2026	carried, not yet filed for the newest quarter
43	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	448,345	0.41%	+184,053	Jun 30, 2026	carried, not yet filed for the newest quarter
43.1	Goldman Sachs Small Cap Growth Insights Fund Fund S000014930 · Registered fund · Jul 31, 2026 Goldman Sachs Trust, not summed	42,963	0.04%	+26,679	Jul 31, 2026	Goldman Sachs Trust, not summed
43.2	Goldman Sachs Small Cap Equity Insights Fund Fund S000009329 · Registered fund · Jul 31, 2026 Goldman Sachs Trust, not summed	12,125	0.01%	—	Jul 31, 2026	Goldman Sachs Trust, not summed
43.3	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Jun 30, 2026 GOLDMAN SACHS TRUST, not summed	8,607	0.01%	-617	Jun 30, 2026	GOLDMAN SACHS TRUST, not summed
43.4	Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF Fund S000048296 · Registered fund · May 31, 2026 Goldman Sachs ETF Trust, not summed	4,715	0.00%	-17,448	May 31, 2026	Goldman Sachs ETF Trust, not summed
44	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	417,225	0.38%	+56,287	Jun 30, 2026	carried, not yet filed for the newest quarter
44.1	E*TRADE No Fee Total Market Index Fund Fund S000090722 · Registered fund · Jul 31, 2026 E Trade Trust, not summed	155	0.00%	0	Jul 31, 2026	E Trade Trust, not summed
45	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	407,361	0.37%	+13,367	Jun 30, 2026	carried, not yet filed for the newest quarter
46	Guardian Wealth Management, Inc. 13F CIK 1910205 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	380,685	0.35%	+11,724	Jun 30, 2026	carried, not yet filed for the newest quarter
47	Sarsfield Luke A. III Insider CIK 1997448 · Feb 14, 2026 Director, See Remarks, issuer-wide, not summed	306,318	0.28%	+20,687	Feb 14, 2026	Director, See Remarks, issuer-wide, not summed
48	Abell Alexander I. Insider CIK 1888941 · Sep 26, 2025 Insider, issuer-wide, not summed	300,000	0.27%	-25,000	Sep 26, 2025	Insider, issuer-wide, not summed
49	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	299,942	0.27%	+10,105	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
50	Gwilliam Scott L. Insider CIK 1889691 · Jun 18, 2026 Director, issuer-wide, not summed	292,975	0.27%	+24,540	Jun 18, 2026	Director, issuer-wide, not summed

19 more nested rows are not shown here; Every filing lists them all.

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.

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Key facts CIK 1841968 CUSIP 69376K106 13F (30d) 21 filings 21 filers Visit website Investor relations