ISSUER PROFILE · CIK 0000006176

AMPCO PITTSBURGH CORPAP

19 13D/G filings 6 distinct filers 0 insider transactions (365d)

Cross-Reference Snapshot

Activist filings

19 SC

Distinct filers

multi-activist cluster

Insiders (365d)

0 buys · 0 sales

Latest short DTC

2.36

as of 2026-05-29

Filed	Form	Filer	Stake	Shares
2024-02-20	SC	2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford	—	—	view →
2022-11-28	SC	Louis Berkman Investment CO	—	—	view →
2022-03-01	SC	Louis Berkman Investment CO	—	—	view →
2022-02-11	SC	Ancora Advisors, LLC	—	—	view →
2021-08-16	SC	Altor Fund II GP Ltd	—	—	view →
2021-07-01	SC	2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford	—	—	view →
2021-04-09	SC	2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford	—	—	view →
2021-03-19	SC	GAMCO INVESTORS, INC. ET AL	—	—	view →
2021-03-16	SC	GAMCO INVESTORS, INC. ET AL	—	—	view →
2021-02-01	SC	2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford	—	—	view →
2020-10-01	SC	2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford	—	—	view →
2020-08-25	SC	GAMCO INVESTORS, INC. ET AL	—	—	view →
2020-08-17	SC	GAMCO INVESTORS, INC. ET AL	—	—	view →
2020-08-12	SC	Altor Holdings Ltd	—	—	view →
2020-06-05	SC	GAMCO INVESTORS, INC. ET AL	—	—	view →
2020-04-28	SC	GAMCO INVESTORS, INC. ET AL	—	—	view →
2020-04-15	SC	GAMCO INVESTORS, INC. ET AL	—	—	view →
2019-08-29	SC	GAMCO INVESTORS, INC. ET AL	—	—	view →
2018-04-10	SC	Louis Berkman Investment CO	—	—	view →

Settlement	Short Interest	Days to Cover	% Δ vs prior
2026-05-29	359,250	2.36	-19.0%
2026-05-15	443,478	2.76	-2.4%
2026-04-30	454,475	2.90	+10.4%
2026-04-15	411,507	3.08	-1.0%
2026-03-31	415,673	1.10	+19.9%
2026-03-13	346,709	1.44	-16.0%
2026-02-27	412,932	1.27	+154.8%
2026-02-13	162,044	1.00	+635.2%
2026-01-30	22,040	1.00	-35.5%
2026-01-15	34,199	1.00	-30.9%
2025-12-31	49,461	1.00	-28.1%
2025-12-15	68,748	1.00	+55.6%

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