Comparable stake leader
Louis Berkman Investment CO
SEC ownership of AMPCO PITTSBURGH CORP
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000006176.
Disclosed value leader
GAMCO INVESTORS, INC. ET AL
Comparable rows
50/50
Latest evidence
15 May 2026
- Public ticker
- AP on NYSE
- Parsed ownership sources
- 3/4/5, 13D/G, and 13F
- Largest SEC-reported holder
- Louis Berkman Investment CO
- Latest 13D/G holder
- Louis Berkman Investment CO
- Latest parsed ownership date
- 15 May 2026
- Issuer CIK
- 0000006176
- Issuer location
- Carnegie, PA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of AMPCO PITTSBURGH CORP (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Louis Berkman Investment CO
Disclosed value leader
GAMCO INVESTORS, INC. ET AL
Comparable rows
50/50
Latest evidence
15 May 2026
3/4/5
13D/G
13F
Lead comparable stake: 15%
13D/G row: Louis Berkman Investment CO
Showing 1-8 of 50 holder rows.
Quick read
Louis Berkman Investment CO leads the comparable SEC ownership view at 15%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Louis Berkman Investment CO's linked filing trail.
Comparable ownership
Top 5
Louis Berkman Investment CO
15%
Galloway Capital Partners, LLC
5.2%
Ancora Alternatives LLC
4.2%
Michael I. German
1.1%
James J. Abel
0.74%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Louis Berkman Investment CO |
3/4/5
13D/G
10%+ Owner · The Louis Berkman Investment Company
|
15%
from 13D/G
|
$8,351,204
3,127,792 shares
|
+$248,310 | 17 Nov 2025 |
| Galloway Capital Partners, LLC |
13D/G
|
5.2%
|
$2,830,616
1,056,200 shares
|
$0 | 17 Dec 2025 |
| Ancora Alternatives LLC |
13D/G
DiSanto Fredrick D.
|
4.2%
|
$1,962,507
857,065 shares
|
$0 | 13 Nov 2025 |
| Michael I. German |
3/4/5
Director
|
1.1%
|
$1,539,175
229,044 shares
|
+$106,000 | 15 May 2026 |
| James J. Abel |
3/4/5
Director
|
0.74%
|
$295,070
150,546 shares
|
— | 15 May 2025 |
| Elizabeth Anne Fessenden |
3/4/5
Director
|
0.62%
|
$851,450
126,704 shares
|
— | 15 May 2026 |
| Laurence E. Paul |
3/4/5
Director
|
0.45%
|
$616,506
91,742 shares
|
— | 15 May 2026 |
| Robert DeMichiei |
3/4/5
Director
|
0.42%
|
$574,956
85,559 shares
|
— | 15 May 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$517,431.
Buys
$517,431
Insiders: 4
Sells
$0
Insiders: 0
Net
+$517,431
Shares: +175,800
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 175,800
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 10,800 | 0 | $79,817 | $0 | +$79,817 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 165,000 | 0 | $437,614 | $0 | +$437,614 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-18 of 18 reporting-owner rows connected to AMPCO PITTSBURGH CORP. Open a relationship link for the CIK-to-CIK filing trail.
Rows
18
Largest Forms 3/4/5 holder
Louis Berkman Investment CO
Net 12M change
+$517,431
Latest report
19 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Louis Berkman Investment CO | 10%+ Owner | $8,351,204 | +$248,310 | +3.1% | Filing P/S | 17 Nov 2025 |
| Brett McBrayer | Chief Executive Officer, Director | $5,034,749 | +$128,761 | +2.6% | Filing P/S | 19 May 2026 |
| Michael I. German | Director | $1,539,175 | +$106,000 | +7.4% | Median | 15 May 2026 |
| Samuel Lyon | President of Union Electric | $1,285,401 | Median | 15 May 2026 | ||
| Elizabeth Anne Fessenden | Director | $851,450 | Median | 15 May 2026 | ||
| Laurence E. Paul | Director | $616,506 | Median | 15 May 2026 | ||
| Robert DeMichiei | Director | $574,956 | Median | 15 May 2026 | ||
| David George Anderson | VP, CFO & Treasurer, Pres. ALS | $557,531 | Median | 15 May 2026 | ||
| Darrell L. McNair | Director | $523,661 | +$34,360 | +7% | Median | 15 May 2026 |
| Carl H. Pforzheimer II | Director | $446,107 | Mixed | 18 May 2023 | ||
| William K. Lieberman | Director | $391,681 | Median | 15 May 2026 | ||
| Frederick D. DiSanto | former director | $387,133 | Mixed | 31 Dec 2025 | ||
| Rose Hoover | President & Chief Admin. Off. | $371,782 | Mixed | 31 Dec 2021 | ||
| Michael G. McAuley | Senior V.P., CFO & Treasurer | $348,015 | Mixed | 15 May 2025 | ||
| James J. Abel | Director | $295,070 | Mixed | 15 May 2025 | ||
| Terrence W. Kenny | President,Air&Liq. Proc. Group | $224,596 | Mixed | 31 Dec 2021 | ||
| Stephen E. Paul | Director | $181,550 | Mixed | 15 May 2024 | ||
| Terry L. Dunlap | Director | $143,907 | Mixed | 13 May 2021 |
Recent insider transactions for AMPCO PITTSBURGH CORP
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Brett McBrayer | AP | Common Stock | Purchase | 0.6% | $29,792 | $9.03 | 3,300 | 557,694 | 19 May 2026 | Direct |
| David George Anderson | AP | Common Stock | Award | 15.5% | 11,117 | 82,966 | 15 May 2026 | Direct | ||
| David George Anderson | AP | Common Stock | Tax liability | -16.6% | -14,254 | 71,849 | 15 May 2026 | Direct | ||
| Samuel Lyon | AP | Common Stock | Award | 8.54% | 15,056 | 191,280 | 15 May 2026 | Direct | ||
| Samuel Lyon | AP | Common Stock | Tax liability | -13.7% | -27,927 | 176,224 | 15 May 2026 | Direct | ||
| Brett McBrayer | AP | Common Stock | Award | 8% | 41,060 | 554,394 | 15 May 2026 | Direct | ||
| Brett McBrayer | AP | Common Stock | Tax liability | -12.4% | -72,397 | 513,334 | 15 May 2026 | Direct | ||
| Darrell L. McNair | AP | Common Stock | Award | 11.5% | 7,374 | 71,286 | 15 May 2026 | Direct | ||
| Laurence E. Paul | AP | Common Stock | Award | 8.74% | 7,374 | 91,742 | 15 May 2026 | Direct | ||
| Michael I. German | AP | Common Stock | Award | 3.33% | 7,374 | 229,044 | 15 May 2026 | Direct | ||
| William K. Lieberman | AP | Common Stock | Award | 14.5% | 7,374 | 58,286 | 15 May 2026 | Direct | ||
| Elizabeth Anne Fessenden | AP | Common Stock | Award | 6.18% | 7,374 | 126,704 | 15 May 2026 | Direct | ||
| Robert DeMichiei | AP | Common Stock | Award | 9.43% | 7,374 | 85,559 | 15 May 2026 | Direct | ||
| Brett McBrayer | AP | Common Stock | Purchase | 1.3% | $50,025 | $6.67 | 7,500 | 585,731 | 19 Mar 2026 | Direct |
| David George Anderson | AP | Common Stock | Award | 29.9% | 19,800 | 86,103 | 04 Mar 2026 | Direct | ||
| Samuel Lyon | AP | Common Stock | Award | 26.1% | 42,240 | 204,151 | 04 Mar 2026 | Direct | ||
| Brett McBrayer | AP | Common Stock | Award | 28.9% | 129,600 | 578,231 | 04 Mar 2026 | Direct | ||
| Brett McBrayer | AP | Common Stock | Purchase | 4.42% | $48,944 | $2.58 | 19,000 | 448,631 | 01 Dec 2025 | Direct |
| Darrell L. McNair | AP | Common Stock | Purchase | 4.93% | $7,560 | $2.52 | 3,000 | 63,912 | 19 Nov 2025 | Direct |
| Louis Berkman Investment CO | AP | COMMON STOCK | Purchase | 3.06% | $248,310 | $2.67 | 93,000 | 3,127,792 | 17 Nov 2025 | Direct |
| Darrell L. McNair | AP | Common Stock | Purchase | 19.6% | $26,800 | $2.68 | 10,000 | 60,912 | 17 Nov 2025 | Direct |
| Michael I. German | AP | Common Stock | Purchase | 22% | $106,000 | $2.65 | 40,000 | 221,670 | 17 Nov 2025 | Direct |
* marks a reported price that did not pass the local price check.