FSTR · Foster L B Co · Shareholders & Ownership

$35.19 -0.14 (-0.40%) At close · Oct 23

Russell 2000 member Rebalance outlook locked

Market Cap

$370.19M

10.52M

Volume · Oct 23 35.24K Avg daily vol (3M) 56.73K

Every disclosed holder of FSTR 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 FSTR

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)	134	8,276,094	78.67%	Yes
Insiders (Forms 3, 4, 5)	20	1,941,151	18.45%	Yes
13D/G-only blocks	0	0	0.00%	Yes
Remaining	—	302,518	2.88%	Rest
Registered funds (N-PORT, not summed)	146	3,522,803	33.49%	No

Shares outstanding: 10,519,763, the issuer's latest cover-page count restated onto today's split basis.

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 FSTR

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	BRANDES INVESTMENT PARTNERS, LP 13F CIK 1015079 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,430,840	13.60%	-50,483	Jun 30, 2026	carried, not yet filed for the newest quarter
1.1	Brandes Small Cap Value Fund Fund S000084888 · Registered fund · Jun 30, 2026 Datum One Series Trust, not summed	416,910	3.96%	+17,222	Jun 30, 2026	Datum One Series Trust, not summed
2	English Aron R. Insider CIK 1770436 · Apr 1, 2026 10% Owner, issuer-wide	1,028,160	9.77%	-39,931	Apr 1, 2026	10% Owner, issuer-wide
3	GAMCO INVESTORS, INC. ET AL 13F CIK 807249 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	885,439	8.42%	-16,000	Jun 30, 2026	carried, not yet filed for the newest quarter
4	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	743,232	7.07%	+40,370	Jun 30, 2026	carried, not yet filed for the newest quarter
4.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	258,170	2.45%	+14,472	Jun 30, 2026	iShares Trust, not summed
4.2	iShares Russell 2000 Value ETF Fund S000004342 · Registered fund · Jun 30, 2026 iShares Trust, not summed	89,867	0.85%	+3,920	Jun 30, 2026	iShares Trust, not summed
4.3	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	33,259	0.32%	+8,183	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	18,893	0.18%	+2,705	Jun 30, 2026	Quantitative Master Series LLC, not summed
4.5	BlackRock Small Cap Index V.I. Fund Fund S000059910 · Registered fund · Jun 30, 2026 BlackRock Variable Series Funds, Inc., not summed	1,417	0.01%	+287	Jun 30, 2026	BlackRock Variable Series Funds, Inc., not summed
5	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	677,098	6.44%	-16,394	Jun 30, 2026	carried, not yet filed for the newest quarter
5.1	U.S. SMALL CAP VALUE PORTFOLIO Fund S000000987 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	136,822	1.30%	-23,848	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
5.2	U.S. Targeted Value Portfolio Fund S000000970 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	97,525	0.93%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
5.3	U.S. MICRO CAP PORTFOLIO Fund S000000948 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	68,362	0.65%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
5.4	Dimensional U.S. Targeted Value ETF Fund S000070901 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	67,995	0.65%	+239	Jul 31, 2026	Dimensional ETF Trust, not summed
5.5	U.S. SMALL CAP PORTFOLIO Fund S000000971 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	46,837	0.45%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
6	1290 VT GAMCO Small Company Value Portfolio Fund S000009151 · Registered fund · Jun 30, 2026 EQ Advisors Trust, not summed	545,000	5.18%	-1,000	Jun 30, 2026	EQ Advisors Trust, not summed
7	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	422,980	4.02%	+38,196	Jun 30, 2026	carried, not yet filed for the newest quarter
8	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	356,350	3.39%	+39,968	Jun 30, 2026	carried, not yet filed for the newest quarter
9	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	297,346	2.83%	+30,790	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
10	ACADIAN ASSET MANAGEMENT LLC 13F CIK 916542 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	267,997	2.55%	+137,692	Jun 30, 2026	carried, not yet filed for the newest quarter
11	22NW Fund, LP 13D CIK 1640809 · Unknown · Apr 20, 2026 Item 4 purpose: not restated by this amendment, the earlier 13D's purpose stands not summed	261,745	2.49%	-326,929	Apr 20, 2026	not summed
12	KASEL JOHN F Insider CIK 1228393 · May 22, 2026 Director, President & Chief Exec Officer, issuer-wide	253,571	2.41%	-4,102	May 22, 2026	Director, President & Chief Exec Officer, issuer-wide
13	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	246,464	2.34%	+17,753	Jun 30, 2026	carried, not yet filed for the newest quarter
14	Hillsdale Investment Management Inc. 13F CIK 1368465 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	218,150	2.07%	+205,450	Jun 30, 2026	carried, not yet filed for the newest quarter
15	AMERICAN CENTURY COMPANIES INC 13F CIK 748054 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	196,121	1.86%	+112,550	Jun 30, 2026	carried, not yet filed for the newest quarter
16	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	191,768	1.82%	+39,217	Jun 30, 2026	carried, not yet filed for the newest quarter
16.1	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	3,400	0.03%	0	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
16.2	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	250	0.00%	-12	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
17	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	144,194	1.37%	+144,194	Jun 30, 2026	carried, not yet filed for the newest quarter
18	GABELLI FUNDS LLC 13F CIK 1081407 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	124,600	1.18%	-8,436	Jun 30, 2026	carried, not yet filed for the newest quarter
18.1	The Gabelli Small Cap Growth Fund Fund S000001062 · Registered fund · Jun 30, 2026 Gabelli Equity Series Funds Inc, not summed	111,000	1.06%	-2,500	Jun 30, 2026	Gabelli Equity Series Funds Inc, not summed
18.2	Gabelli Global Mini Mites Fund Fund S000063160 · Registered fund · Jun 30, 2026 GAMCO Global Series Funds, Inc, not summed	10,300	0.10%	0	Jun 30, 2026	GAMCO Global Series Funds, Inc, not summed
18.3	The Gabelli Utilities Fund Fund S000001075 · Registered fund · Jun 30, 2026 Gabelli Utilities Fund, not summed	3,100	0.03%	-4,400	Jun 30, 2026	Gabelli Utilities Fund, not summed
19	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	115,782	1.10%	+7,008	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
20	Bragg Financial Advisors, Inc 13F CIK 1327055 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	113,882	1.08%	-1	Jun 30, 2026	carried, not yet filed for the newest quarter
21	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	108,203	1.03%	+10,037	Jun 30, 2026	carried, not yet filed for the newest quarter
22	FPA Queens Road Small Cap Value Fund Fund S000080694 · Registered fund · May 31, 2026 Investment Managers Series Trust III, not summed	102,635	0.98%	0	May 31, 2026	Investment Managers Series Trust III, not summed
23	Avantis U.S. Small Cap Value ETF Fund S000066459 · Registered fund · May 31, 2026 American Century ETF Trust, not summed	96,222	0.91%	+34,767	May 31, 2026	American Century ETF Trust, not summed
24	HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 13F CIK 1164833 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	91,157	0.87%	-44,940	Jun 30, 2026	carried, not yet filed for the newest quarter
24.1	Hotchkis and Wiley Small Cap Diversified Value Fund Fund S000045868 · Registered fund · Jun 30, 2026 HOTCHKIS & WILEY FUNDS/DE/, not summed	22,700	0.22%	-20,800	Jun 30, 2026	HOTCHKIS & WILEY FUNDS/DE/, not summed
25	Guinee Patrick J. Insider CIK 1600919 · May 22, 2026 EVP General Counsel & Sec., issuer-wide	87,341	0.83%	-1,077	May 22, 2026	EVP General Counsel & Sec., issuer-wide
26	Teton Advisors, LLC 13F CIK 2086025 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	84,040	0.80%	-14,601	Jun 30, 2026	carried, not yet filed for the newest quarter
27	TETON Westwood Mighty Mites Fund Fund S000001084 · Registered fund · Jun 30, 2026 Teton Westwood Funds, not summed	84,040	0.80%	-14,601	Jun 30, 2026	Teton Westwood Funds, not summed
28	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	82,120	0.78%	+3,920	Jun 30, 2026	carried, not yet filed for the newest quarter
28.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	4,874	0.05%	-160	Jun 30, 2026	Northern Funds, not summed
28.2	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	1,273	0.01%	-58	Jun 30, 2026	Northern Funds, not summed
29	Wealthspire Advisors, LLC 13F CIK 1646247 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	80,907	0.77%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
30	THALMAN WILLIAM M Insider CIK 1104808 · Jun 1, 2026 EVP & CFO, issuer-wide	79,882	0.76%	+1,128	Jun 1, 2026	EVP & CFO, issuer-wide
31	OWEN DIANE B Insider CIK 1215505 · May 22, 2026 Director, issuer-wide	78,397	0.75%	-96	May 22, 2026	Director, issuer-wide
32	LIPPARD GREGORY W Insider CIK 1215503 · May 22, 2026 SVP -Rail, issuer-wide	76,562	0.73%	-905	May 22, 2026	SVP -Rail, issuer-wide
33	Kelly Brian H Insider CIK 1375886 · Dec 31, 2025 EVP and Sr. Advisor to the CEO, issuer-wide	73,575	0.70%	-5,983	Dec 31, 2025	EVP and Sr. Advisor to the CEO, issuer-wide
34	Qube Research & Technologies Ltd 13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	73,231	0.70%	+22,737	Jun 30, 2026	carried, not yet filed for the newest quarter
35	Minerva Advisors LLC 13F CIK 1541536 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	67,922	0.65%	-16,043	Jun 30, 2026	carried, not yet filed for the newest quarter
36	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	66,408	0.63%	+9,109	Jun 30, 2026	carried, not yet filed for the newest quarter
37	BRIDGEWAY CAPITAL MANAGEMENT, LLC 13F CIK 1107261 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	65,397	0.62%	+1,132	Jun 30, 2026	carried, not yet filed for the newest quarter
37.1	Omni Small-Cap Value Fund Fund S000033567 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	19,000	0.18%	0	Jun 30, 2026	Bridgeway Funds, Inc., not summed
37.2	Ultra-Small Company Market Fund Fund S000004424 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	18,400	0.17%	0	Jun 30, 2026	Bridgeway Funds, Inc., not summed
37.3	Ultra-Small Company Fund Fund S000004423 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	9,000	0.09%	0	Jun 30, 2026	Bridgeway Funds, Inc., not summed
38	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	63,914	0.61%	+3,401	Jun 30, 2026	carried, not yet filed for the newest quarter
39	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 13F CIK 1164508 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	58,824	0.56%	+49,622	Jun 30, 2026	carried, not yet filed for the newest quarter
40	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	54,826	0.52%	+5,741	Jun 30, 2026	carried, not yet filed for the newest quarter
41	MARSHALL WACE, LLP 13F CIK 1318757 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	51,018	0.49%	+31,302	Jun 30, 2026	carried, not yet filed for the newest quarter
42	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	50,971	0.48%	+1,077	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
43	Russell Investments Group, Ltd. 13F CIK 1692234 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	47,831	0.45%	+29,392	Jun 30, 2026	carried, not yet filed for the newest quarter
44	LPL Financial LLC 13F CIK 1403438 · Broker-dealer · Jun 30, 2026 carried, not yet filed for the newest quarter	44,702	0.42%	+17,198	Jun 30, 2026	carried, not yet filed for the newest quarter
45	ALGERT GLOBAL LLC 13F CIK 1275218 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	44,189	0.42%	+44,189	Jun 30, 2026	carried, not yet filed for the newest quarter
46	1290 GAMCO Small/Mid Cap Value Fund Fund S000045910 · Registered fund · Jul 31, 2026 1290 Funds, not summed	41,500	0.39%	0	Jul 31, 2026	1290 Funds, not summed
47	PANAGORA ASSET MANAGEMENT INC 13F CIK 883677 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	41,295	0.39%	+41,295	Jun 30, 2026	carried, not yet filed for the newest quarter
48	LAZARD ASSET MANAGEMENT LLC 13F CIK 1207017 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	40,298	0.38%	+40,298	Jun 30, 2026	carried, not yet filed for the newest quarter
49	MARTINGALE ASSET MANAGEMENT L P 13F CIK 936944 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	38,537	0.37%	+29,381	Jun 30, 2026	carried, not yet filed for the newest quarter
50	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	38,461	0.37%	-1,137	Jun 30, 2026	carried, not yet filed for the newest quarter
50.1	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Aug 31, 2026 GOLDMAN SACHS TRUST, not summed	5,252	0.05%	-967	Aug 31, 2026	GOLDMAN SACHS TRUST, not summed
50.2	Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF Fund S000048296 · Registered fund · May 31, 2026 Goldman Sachs ETF Trust, not summed	610	0.01%	+9	May 31, 2026	Goldman Sachs ETF Trust, not summed

17 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.

Showing 1–50 of 239 holders

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Key facts CIK 352825 CUSIP 350060109 13F (30d) 17 filings 17 filers Visit website Investor relations