AP

AMPCO PITTSBURGH CORP

Pumps & Pumping EquipmentNYSENon-accelerated filer<br>Smaller reporting company

Total Trades

16

Buys

16

Sells

0

Largest Trade

$1M+

Insiders

9

Institutional Funds

31

Inst. Value

$1M+

Activist Filings

17

Insider Trades

InsiderTitleTypeValueSharesPriceDate
McBrayer BrettCEOBUY$15K–$50K19K$2.58Dec 2, 2025
Louis Berkman Investment CO10% OwnerBUY$100K–$500K93K$2.67Nov 26, 2025
McNair Darrell LDirectorBUY$1K–$15K3K$2.52Nov 19, 2025
McNair Darrell LDirectorBUY$15K–$50K10K$2.68Nov 18, 2025
GERMAN MICHAEL IDirectorBUY$100K–$500K40K$2.65Nov 18, 2025
Fessenden Elizabeth AnneDirectorBUY$1K–$15K4K$2.21Mar 26, 2025
McNair Darrell LDirectorBUY$1K–$15K3K$3.12Sep 20, 2023
DiSanto Frederick D.DirectorBUY$15K–$50K8K$2.97Jul 3, 2023
DiSanto Frederick D.DirectorBUY$15K–$50K7K$2.94Jun 26, 2023
DiSanto Frederick D.DirectorBUY$15K–$50K10K$2.91May 22, 2023
McNair Darrell LDirectorBUY$1K–$15K4K$2.74Apr 7, 2023
Anderson David GeorgePresidentBUY$1K–$15K4K$2.45Mar 29, 2023
McAuley Michael GV.P.BUY<$1K20$13.73Mar 27, 2023
McAuley Michael GV.P.BUY$15K–$50K7K$2.29Mar 24, 2023
DeMichiei RobertDirectorBUY$15K–$50K18K$2.29Mar 24, 2023
Louis Berkman Investment CO10% OwnerBUY$1M+552K$2.50Nov 23, 2022
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Institutional Ownership

13F filings as of Dec 31, 2025 · 31 funds holding

FundShares
GAMCO INVESTORS, INC. ET AL2.5M
GABELLI FUNDS LLC1.4M
RENAISSANCE TECHNOLOGIES LLC461K
DIMENSIONAL FUND ADVISORS LP291K
Informed Momentum Co LLC148K
Teton Advisors, LLC130K
GEODE CAPITAL MANAGEMENT, LLC112K
SEI INVESTMENTS CO90K
STATE STREET CORP80K
VANGUARD GROUP INC69K
ACADIAN ASSET MANAGEMENT LLC66K
MARSHALL WACE, LLP48K
GOLDMAN SACHS GROUP INC28K
Central Pacific Bank - Trust Division22K
GSA CAPITAL PARTNERS LLP18K
UBS Group AG16K
HRT FINANCIAL LP15K
JANE STREET GROUP, LLC12K
Belvedere Trading LLC10K
GROUP ONE TRADING LLC10K

Activist & 5%+ Owners

SC 13D/13G filings — investors holding 5%+ of outstanding shares

RUTABAGA CAPITAL MANAGEMENT LLC/MA

SC 13G/A · Jan 22, 2026

0.0%

0 shares

Galloway Capital Partners, LLC

SC 13D · Dec 19, 2025

5.2%

1.1M shares

The Louis Berkman Investment Company

SC 13D/A · Nov 26, 2025

15.4%

3.1M shares

Ancora Alternatives LLC

SC 13D/A · Nov 14, 2025

3.9%

784K shares

5.7%

1.1M shares

5.4%

1.1M shares

4.9%

987K shares

4.9%

980K shares

Ancora Merlin, LP

SC 13D/A · Mar 31, 2023

1.0%

50K shares

5.2%

1.0M shares

The Louis Berkman Investment Company

SC 13D/A · Nov 28, 2022

20.4%

4.2M shares

Altor II Aggregator Topco Limited

SC 13D/A · Nov 23, 2022

0.0%

0 shares

8.4%

1.7M shares

18.0%

3.6M shares

Ancora Merlin, LP

SC 13D/A · Feb 11, 2022

1.0%

50K shares

Ancora Merlin, LP

SC 13D · Jan 7, 2022

1.0%

50K shares

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