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Louis Berkman Investment CO
10% owner at AMPCO PITTSBURGH. Filing since 1 Aug 2007.
CIK 0001351834
Company
Date
Role
Action
Shares
Amount
Of holding
AP
AMPCO PITTSBURGH CORP
17 Nov 2025
10% owner
Bought
93,000
$248.31K
3.1%
AP
AMPCO PITTSBURGH CORP
21 Nov 2022
10% owner
Bought
551,604
$1.38M
22.2%
AP
AMPCO PITTSBURGH CORP
23 May 2019
10% owner
Bought
4,745
$20.59K
0.4%
AP
AMPCO PITTSBURGH CORP
22 May 2019
10% owner
Bought
10,000
$43.14K
0.8%
AP
AMPCO PITTSBURGH CORP
21 May 2019
10% owner
Bought
10,000
$43.15K
0.8%
AP
AMPCO PITTSBURGH CORP
20 May 2019
10% owner
Sold, plan not stated
1,500
$6.67K
0.1%
AP
AMPCO PITTSBURGH CORP
17 Mar 2019
10% owner
Sold, plan not stated
8,226
$35.85K
0.6%
AP
AMPCO PITTSBURGH CORP
16 Mar 2019
10% owner
Sold, plan not stated
1,585
$6.42K
0.1%
AP
AMPCO PITTSBURGH CORP
15 Mar 2019
10% owner
Sold, plan not stated
10,000
$40.09K
0.8%
AP
AMPCO PITTSBURGH CORP
30 Jul 2018
10% owner
Sold, plan not stated
100
$1.10K
0.0%
AP
AMPCO PITTSBURGH CORP
31 May 2018
10% owner
Sold, plan not stated
679
$7.47K
0.1%
AP
AMPCO PITTSBURGH CORP
24 Apr 2018
10% owner
Sold, plan not stated
1,767
$19.44K
0.1%
AP
AMPCO PITTSBURGH CORP
23 Apr 2018
10% owner
Sold, plan not stated
3,800
$42.29K
0.3%
AP
AMPCO PITTSBURGH CORP
20 Apr 2018
10% owner
Sold, plan not stated
6,200
$69.55K
0.5%
AP
AMPCO PITTSBURGH CORP
19 Apr 2018
10% owner
Sold, plan not stated
7,103
$79.85K
0.5%
AP
AMPCO PITTSBURGH CORP
18 Apr 2018
10% owner
Sold, plan not stated
8,486
$94.71K
0.7%
AP
AMPCO PITTSBURGH CORP
17 Apr 2018
10% owner
Sold, plan not stated
8,100
$89.10K
0.6%
AP
AMPCO PITTSBURGH CORP
10 Apr 2018
10% owner
Sold, plan not stated
988
$10.87K
0.1%
AP
AMPCO PITTSBURGH CORP
9 Apr 2018
10% owner
Sold, plan not stated
4,716
$51.90K
0.4%
AP
AMPCO PITTSBURGH CORP
16 Mar 2018
10% owner
Sold, plan not stated
4,363
$47.99K
0.3%
AP
AMPCO PITTSBURGH CORP
14 Mar 2018
10% owner
Sold, plan not stated
532
$5.85K
0.0%
AP
AMPCO PITTSBURGH CORP
13 Mar 2018
10% owner
Sold, plan not stated
800
$8.90K
0.1%
AP
AMPCO PITTSBURGH CORP
12 Mar 2018
10% owner
Sold, plan not stated
14,411
$160.33K
1.1%
AP
AMPCO PITTSBURGH CORP
9 Mar 2018
10% owner
Sold, plan not stated
4,840
$53.53K
0.4%
AP
AMPCO PITTSBURGH CORP
8 Mar 2018
10% owner
Sold, plan not stated
1,000
$11.00K
0.1%
AP
AMPCO PITTSBURGH CORP
7 Mar 2018
10% owner
Sold, plan not stated
10,566
$116.77K
0.8%
AP
AMPCO PITTSBURGH CORP
5 Mar 2018
10% owner
Sold, plan not stated
2,300
$25.30K
0.2%
AP
AMPCO PITTSBURGH CORP
2 Mar 2018
10% owner
Sold, plan not stated
1,393
$15.32K
0.1%
AP
AMPCO PITTSBURGH CORP
28 Feb 2018
10% owner
Sold, plan not stated
26
$286.00
0.0%
AP
AMPCO PITTSBURGH CORP
27 Feb 2018
10% owner
Sold, plan not stated
4,708
$51.85K
0.3%
AP
AMPCO PITTSBURGH CORP
26 Feb 2018
10% owner
Sold, plan not stated
1,642
$18.09K
0.1%
AP
AMPCO PITTSBURGH CORP
23 Feb 2018
10% owner
Sold, plan not stated
3,100
$34.34K
0.2%
AP
AMPCO PITTSBURGH CORP
22 Feb 2018
10% owner
Sold, plan not stated
2,803
$30.87K
0.2%
AP
AMPCO PITTSBURGH CORP
21 Feb 2018
10% owner
Sold, plan not stated
7,621
$84.03K
0.6%
AP
AMPCO PITTSBURGH CORP
20 Feb 2018
10% owner
Sold, plan not stated
3,194
$35.16K
0.2%
AP
AMPCO PITTSBURGH CORP
16 Feb 2018
10% owner
Sold, plan not stated
10,100
$111.85K
0.7%
AP
AMPCO PITTSBURGH CORP
12 Feb 2018
10% owner
Sold, plan not stated
1,064
$11.86K
0.1%
AP
AMPCO PITTSBURGH CORP
9 Feb 2018
10% owner
Sold, plan not stated
20,097
$225.98K
1.4%
AP
AMPCO PITTSBURGH CORP
8 Feb 2018
10% owner
Sold, plan not stated
5,289
$61.83K
0.4%
AP
AMPCO PITTSBURGH CORP
7 Feb 2018
10% owner
Sold, plan not stated
2,532
$30.50K
0.2%
AP
AMPCO PITTSBURGH CORP
6 Feb 2018
10% owner
Sold, plan not stated
7,267
$90.19K
0.5%
AP
AMPCO PITTSBURGH CORP
5 Feb 2018
10% owner
Sold, plan not stated
2,800
$36.54K
0.2%
AP
AMPCO PITTSBURGH CORP
2 Feb 2018
10% owner
Sold, plan not stated
1,513
$19.90K
0.1%
AP
AMPCO PITTSBURGH CORP
1 Feb 2018
10% owner
Sold, plan not stated
1,237
$16.69K
0.1%
AP
AMPCO PITTSBURGH CORP
31 Jan 2018
10% owner
Sold, plan not stated
1,226
$16.61K
0.1%
AP
AMPCO PITTSBURGH CORP
30 Jan 2018
10% owner
Sold, plan not stated
2,014
$28.44K
0.1%
AP
AMPCO PITTSBURGH CORP
29 Jan 2018
10% owner
Sold, plan not stated
1,158
$17.21K
0.1%
AP
AMPCO PITTSBURGH CORP
19 Jan 2010
10% owner
Sold, plan not stated
9,601
$308.71K
0.7%
AP
AMPCO PITTSBURGH CORP
15 Jan 2010
10% owner
Sold, plan not stated
5,100
$164.28K
0.4%
AP
AMPCO PITTSBURGH CORP
11 Jan 2010
10% owner
Sold, plan not stated
1,400
$44.86K
0.1%
AP
AMPCO PITTSBURGH CORP
8 Jan 2010
10% owner
Sold, plan not stated
200
$6.41K
0.0%
AP
AMPCO PITTSBURGH CORP
5 Jan 2010
10% owner
Sold, plan not stated
2,900
$92.88K
0.2%
AP
AMPCO PITTSBURGH CORP
4 Jan 2010
10% owner
Sold, plan not stated
9,600
$309.07K
0.7%
AP
AMPCO PITTSBURGH CORP
31 Dec 2009
10% owner
Sold, plan not stated
7,900
$254.54K
0.5%
AP
AMPCO PITTSBURGH CORP
30 Dec 2009
10% owner
Sold, plan not stated
10,000
$322.30K
0.7%
AP
AMPCO PITTSBURGH CORP
29 Dec 2009
10% owner
Sold, plan not stated
10,000
$328.20K
0.7%
AP
AMPCO PITTSBURGH CORP
17 Sep 2008
10% owner
Sold, plan not stated
9,900
$291.10K
0.7%
AP
AMPCO PITTSBURGH CORP
16 Sep 2008
10% owner
Sold, plan not stated
10,000
$313.30K
0.7%
AP
AMPCO PITTSBURGH CORP
15 Sep 2008
10% owner
Sold, plan not stated
10,000
$322.44K
0.7%
AP
AMPCO PITTSBURGH CORP
12 Sep 2008
10% owner
Sold, plan not stated
10,000
$336.89K
0.6%
AP
AMPCO PITTSBURGH CORP
11 Sep 2008
10% owner
Sold, plan not stated
10,000
$336.02K
0.6%
AP
AMPCO PITTSBURGH CORP
10 Sep 2008
10% owner
Sold, plan not stated
10,000
$340.19K
0.6%
AP
AMPCO PITTSBURGH CORP
9 Sep 2008
10% owner
Sold, plan not stated
10,000
$329.28K
0.6%
AP
AMPCO PITTSBURGH CORP
8 Sep 2008
10% owner
Sold, plan not stated
10,000
$351.44K
0.6%
AP
AMPCO PITTSBURGH CORP
5 Sep 2008
10% owner
Sold, plan not stated
10,000
$365.86K
0.6%
AP
AMPCO PITTSBURGH CORP
4 Sep 2008
10% owner
Sold, plan not stated
10,000
$378.28K
0.6%
AP
AMPCO PITTSBURGH CORP
3 Sep 2008
10% owner
Sold, plan not stated
9,900
$401.18K
0.6%
AP
AMPCO PITTSBURGH CORP
3 Sep 2008
10% owner
Sold, plan not stated
100
$4.02K
0.0%
AP
AMPCO PITTSBURGH CORP
2 Sep 2008
10% owner
Sold, plan not stated
10,000
$418.52K
0.6%
AP
AMPCO PITTSBURGH CORP
17 Jan 2008
10% owner
Sold, plan not stated
8,612
$287.54K
0.5%
AP
AMPCO PITTSBURGH CORP
13 Dec 2007
10% owner
Sold, plan not stated
7,638
$271.25K
0.5%
AP
AMPCO PITTSBURGH CORP
12 Dec 2007
10% owner
Sold, plan not stated
10,000
$359.44K
0.6%
AP
AMPCO PITTSBURGH CORP
11 Dec 2007
10% owner
Sold, plan not stated
10,000
$360.45K
0.6%
AP
AMPCO PITTSBURGH CORP
10 Dec 2007
10% owner
Sold, plan not stated
10,000
$366.58K
0.6%
AP
AMPCO PITTSBURGH CORP
7 Dec 2007
10% owner
Sold, plan not stated
10,000
$371.91K
0.6%
AP
AMPCO PITTSBURGH CORP
6 Dec 2007
10% owner
Sold, plan not stated
10,000
$367.39K
0.6%
AP
AMPCO PITTSBURGH CORP
5 Dec 2007
10% owner
Sold, plan not stated
10,000
$348.49K
0.6%
AP
AMPCO PITTSBURGH CORP
4 Dec 2007
10% owner
Sold, plan not stated
10,000
$335.71K
0.6%
AP
AMPCO PITTSBURGH CORP
3 Dec 2007
10% owner
Sold, plan not stated
10,000
$347.02K
0.6%
AP
AMPCO PITTSBURGH CORP
30 Nov 2007
10% owner
Sold, plan not stated
10,000
$357.44K
0.6%
AP
AMPCO PITTSBURGH CORP
29 Nov 2007
10% owner
Sold, plan not stated
10,000
$364.70K
0.6%
AP
AMPCO PITTSBURGH CORP
28 Nov 2007
10% owner
Sold, plan not stated
10,000
$358.83K
0.6%
AP
AMPCO PITTSBURGH CORP
27 Nov 2007
10% owner
Sold, plan not stated
10,000
$348.14K
0.6%
AP
AMPCO PITTSBURGH CORP
26 Nov 2007
10% owner
Sold, plan not stated
10,000
$342.89K
0.6%
AP
AMPCO PITTSBURGH CORP
23 Nov 2007
10% owner
Sold, plan not stated
10,000
$343.21K
0.6%
AP
AMPCO PITTSBURGH CORP
21 Nov 2007
10% owner
Sold, plan not stated
10,000
$344.19K
0.6%
AP
AMPCO PITTSBURGH CORP
20 Nov 2007
10% owner
Sold, plan not stated
10,000
$356.59K
0.6%
AP
AMPCO PITTSBURGH CORP
19 Nov 2007
10% owner
Sold, plan not stated
10,000
$352.36K
0.6%
AP
AMPCO PITTSBURGH CORP
16 Nov 2007
10% owner
Sold, plan not stated
10,000
$364.19K
0.6%
AP
AMPCO PITTSBURGH CORP
15 Nov 2007
10% owner
Sold, plan not stated
10,000
$368.20K
0.5%
AP
AMPCO PITTSBURGH CORP
14 Nov 2007
10% owner
Sold, plan not stated
10,000
$373.88K
0.5%
AP
AMPCO PITTSBURGH CORP
13 Nov 2007
10% owner
Sold, plan not stated
10,000
$370.81K
0.5%
AP
AMPCO PITTSBURGH CORP
12 Nov 2007
10% owner
Sold, plan not stated
10,000
$374.12K
0.5%
AP
AMPCO PITTSBURGH CORP
9 Nov 2007
10% owner
Sold, plan not stated
10,000
$374.91K
0.5%
AP
AMPCO PITTSBURGH CORP
8 Nov 2007
10% owner
Sold, plan not stated
10,000
$372.52K
0.5%
AP
AMPCO PITTSBURGH CORP
7 Nov 2007
10% owner
Sold, plan not stated
10,000
$384.55K
0.5%
AP
AMPCO PITTSBURGH CORP
6 Nov 2007
10% owner
Sold, plan not stated
10,000
$388.54K
0.5%
AP
AMPCO PITTSBURGH CORP
5 Nov 2007
10% owner
Sold, plan not stated
10,000
$383.37K
0.5%
AP
AMPCO PITTSBURGH CORP
2 Nov 2007
10% owner
Sold, plan not stated
10,000
$385.44K
0.5%
AP
AMPCO PITTSBURGH CORP
1 Nov 2007
10% owner
Sold, plan not stated
10,000
$391.98K
0.5%
AP
AMPCO PITTSBURGH CORP
31 Oct 2007
10% owner
Sold, plan not stated
10,000
$399.94K
0.5%
AP
AMPCO PITTSBURGH CORP
30 Oct 2007
10% owner
Sold, plan not stated
10,000
$402.05K
0.5%
AP
AMPCO PITTSBURGH CORP
29 Oct 2007
10% owner
Sold, plan not stated
10,000
$414.08K
0.5%
AP
AMPCO PITTSBURGH CORP
26 Oct 2007
10% owner
Sold, plan not stated
10,000
$414.00K
0.5%
AP
AMPCO PITTSBURGH CORP
25 Oct 2007
10% owner
Sold, plan not stated
9,900
$416.01K
0.5%
AP
AMPCO PITTSBURGH CORP
24 Oct 2007
10% owner
Sold, plan not stated
10,000
$424.23K
0.5%
AP
AMPCO PITTSBURGH CORP
23 Oct 2007
10% owner
Sold, plan not stated
9,800
$419.32K
0.5%
AP
AMPCO PITTSBURGH CORP
23 Oct 2007
10% owner
Sold, plan not stated
200
$8.60K
0.0%
AP
AMPCO PITTSBURGH CORP
22 Oct 2007
10% owner
Sold, plan not stated
10,000
$430.29K
0.5%
AP
AMPCO PITTSBURGH CORP
19 Oct 2007
10% owner
Sold, plan not stated
10,000
$432.87K
0.5%
AP
AMPCO PITTSBURGH CORP
18 Oct 2007
10% owner
Sold, plan not stated
10,000
$456.27K
0.5%
AP
AMPCO PITTSBURGH CORP
17 Oct 2007
10% owner
Sold, plan not stated
10,000
$453.09K
0.5%
AP
AMPCO PITTSBURGH CORP
16 Oct 2007
10% owner
Sold, plan not stated
10,000
$446.67K
0.5%
AP
AMPCO PITTSBURGH CORP
15 Oct 2007
10% owner
Sold, plan not stated
10,000
$447.59K
0.5%
AP
AMPCO PITTSBURGH CORP
12 Oct 2007
10% owner
Sold, plan not stated
10,000
$446.56K
0.5%
AP
AMPCO PITTSBURGH CORP
11 Oct 2007
10% owner
Sold, plan not stated
10,000
$438.15K
0.5%
AP
AMPCO PITTSBURGH CORP
10 Oct 2007
10% owner
Sold, plan not stated
10,000
$433.36K
0.5%
AP
AMPCO PITTSBURGH CORP
9 Oct 2007
10% owner
Sold, plan not stated
10,000
$417.16K
0.5%
AP
AMPCO PITTSBURGH CORP
8 Oct 2007
10% owner
Sold, plan not stated
10,000
$416.43K
0.5%
AP
AMPCO PITTSBURGH CORP
5 Oct 2007
10% owner
Sold, plan not stated
10,000
$421.97K
0.5%
AP
AMPCO PITTSBURGH CORP
4 Oct 2007
10% owner
Sold, plan not stated
10,000
$408.29K
0.5%
AP
AMPCO PITTSBURGH CORP
3 Oct 2007
10% owner
Sold, plan not stated
10,000
$411.19K
0.5%
AP
AMPCO PITTSBURGH CORP
2 Oct 2007
10% owner
Sold, plan not stated
10,000
$402.64K
0.5%
AP
AMPCO PITTSBURGH CORP
1 Oct 2007
10% owner
Sold, plan not stated
10,000
$392.54K
0.5%
AP
AMPCO PITTSBURGH CORP
28 Sep 2007
10% owner
Sold, plan not stated
10,000
$397.77K
0.5%
AP
AMPCO PITTSBURGH CORP
27 Sep 2007
10% owner
Sold, plan not stated
10,000
$401.16K
0.5%
AP
AMPCO PITTSBURGH CORP
26 Sep 2007
10% owner
Sold, plan not stated
10,000
$409.29K
0.5%
AP
AMPCO PITTSBURGH CORP
25 Sep 2007
10% owner
Sold, plan not stated
10,000
$406.58K
0.5%
AP
AMPCO PITTSBURGH CORP
24 Sep 2007
10% owner
Sold, plan not stated
10,000
$413.23K
0.5%
AP
AMPCO PITTSBURGH CORP
21 Sep 2007
10% owner
Sold, plan not stated
10,000
$423.27K
0.5%
AP
AMPCO PITTSBURGH CORP
20 Sep 2007
10% owner
Sold, plan not stated
10,000
$430.40K
0.5%
AP
AMPCO PITTSBURGH CORP
19 Sep 2007
10% owner
Sold, plan not stated
10,000
$432.91K
0.4%
AP
AMPCO PITTSBURGH CORP
18 Sep 2007
10% owner
Sold, plan not stated
10,000
$412.40K
0.4%
AP
AMPCO PITTSBURGH CORP
17 Sep 2007
10% owner
Sold, plan not stated
10,000
$415.18K
0.4%
AP
AMPCO PITTSBURGH CORP
14 Sep 2007
10% owner
Sold, plan not stated
10,000
$408.65K
0.4%
AP
AMPCO PITTSBURGH CORP
13 Sep 2007
10% owner
Sold, plan not stated
10,000
$418.66K
0.4%
AP
AMPCO PITTSBURGH CORP
14 Aug 2007
10% owner
Sold, plan not stated
3,950
$162.89K
0.2%
AP
AMPCO PITTSBURGH CORP
13 Aug 2007
10% owner
Sold, plan not stated
10,000
$425.55K
0.4%
AP
AMPCO PITTSBURGH CORP
10 Aug 2007
10% owner
Sold, plan not stated
10,000
$411.54K
0.4%
AP
AMPCO PITTSBURGH CORP
9 Aug 2007
10% owner
Sold, plan not stated
10,000
$445.71K
0.4%
AP
AMPCO PITTSBURGH CORP
8 Aug 2007
10% owner
Sold, plan not stated
10,000
$454.29K
0.4%
AP
AMPCO PITTSBURGH CORP
7 Aug 2007
10% owner
Sold, plan not stated
10,000
$425.72K
0.4%
AP
AMPCO PITTSBURGH CORP
6 Aug 2007
10% owner
Sold, plan not stated
10,000
$417.70K
0.4%
AP
AMPCO PITTSBURGH CORP
3 Aug 2007
10% owner
Sold, plan not stated
9,800
$431.60K
0.4%
AP
AMPCO PITTSBURGH CORP
2 Aug 2007
Owned by Founder
Sold, plan not stated
10,000
$433.57K
0.4%
AP
AMPCO PITTSBURGH CORP
1 Aug 2007
Owned by Founder
Sold, plan not stated
10,000
$417.14K
0.4%
146 decisions on file.
