Ampco Pittsburgh's three largest insider shareholders as of September 09, 2026 are Berkman Investment Co Louis (TenPercentOwner, 3.13Mn shares), Berkman Investment Co Louis (TenPercentOwner, 3.13Mn shares), Berkman Investment Co Louis (TenPercentOwner, 3.13Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Berkman Investment Co Louis | TenPercentOwner | 3,127,792 | 0 | 3,127,792 | 58.1% | 26 Nov, 2025 |
| 2 | Brett Mcbrayer | Chief Executive Officer | 557,694 | 0 | 557,694 | 10.4% | 20 May, 2026 |
| 3 | Michael I German | Director | 229,044 | 0 | 229,044 | 4.3% | 18 May, 2026 |
| 4 | Samuel Lyon | President Of Union Electric | 181,233 | 0 | 181,233 | 3.4% | 26 Jun, 2026 |
| 5 | Michael G Mcauley | Senior V.P., Cfo Treasurer | 175,766 | 0 | 175,766 | 3.3% | 16 May, 2025 |
| 6 | James J Abel | Director | 150,546 | 0 | 150,546 | 2.8% | 15 May, 2025 |
| 7 | Carl H Ii Pforzheimer | Director | 141,383 | 0 | 141,383 | 2.6% | 18 May, 2023 |
| 8 | Elizabeth Anne Fessenden | Director | 126,704 | 0 | 126,704 | 2.4% | 18 May, 2026 |
| 9 | Rose Hoover | President Chief Admin. Off. | 115,475 | 0 | 115,475 | 2.1% | 04 Jan, 2022 |
| 10 | Stephen E Paul | Director | 112,764 | 0 | 112,764 | 2.1% | 17 May, 2024 |
| 11 | Frederick D. Disanto | Director | 98,089 | 0 | 98,089 | 1.8% | 17 May, 2024 |
| 12 | Laurence E Paul | Director | 91,742 | 0 | 91,742 | 1.7% | 18 May, 2026 |
| 13 | David George Anderson | Vp, Cfo Treasurer, Pres. Als | 82,966 | 0 | 82,966 | 1.5% | 19 May, 2026 |
| 14 | Terrence W Kenny | President,Airliq. Proc. Group | 71,986 | 0 | 71,986 | 1.3% | 04 Jan, 2022 |
| 15 | Darrell L Mcnair | Director | 65,686 | 0 | 65,686 | 1.2% | 28 Aug, 2026 |
| 16 | William K Lieberman | Director | 58,286 | 0 | 58,286 | 1.1% | 18 May, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 27 Aug, 2026 | Darrell L Mcnair | Director | Disposed G | 5,600 | $0.00 | $0 | 65,686 | Direct |
| 25 Jun, 2026 | Samuel Lyon | President Of Union Electric | Disposed S | 9,500 | $9.82 | $93.27K | 181,233 | Direct |
| 18 Jun, 2026 | Samuel Lyon | President Of Union Electric | Disposed S | 547 | $11.30 | $6.18K | 190,733 | Direct |
| 19 May, 2026 | Brett Mcbrayer | Chief Executive Officer | Acquired P | 3,300 | $9.03 | $29.79K | 557,694 | Direct |
| 15 May, 2026 | Brett Mcbrayer | Chief Executive Officer | Disposed F | 9,396 | $10.85 | $101.95K | 576,335 | Direct |
| 15 May, 2026 | David George Anderson | Vp, Cfo Treasurer, Pres. Als | Disposed F | 1,370 | $10.85 | $14.86K | 84,733 | Direct |
| 15 May, 2026 | Samuel Lyon | President Of Union Electric | Disposed F | 3,029 | $10.85 | $32.86K | 201,122 | Direct |
| 15 May, 2026 | Samuel Lyon | President Of Union Electric | Disposed F | 3,166 | $10.85 | $34.35K | 197,956 | Direct |
| 15 May, 2026 | Brett Mcbrayer | Chief Executive Officer | Disposed F | 8,568 | $10.85 | $92.96K | 567,767 | Direct |
| 15 May, 2026 | David George Anderson | Vp, Cfo Treasurer, Pres. Als | Disposed F | 2,179 | $10.85 | $23.64K | 82,554 | Direct |
| 15 May, 2026 | Samuel Lyon | President Of Union Electric | Disposed F | 3,547 | $10.85 | $38.48K | 194,409 | Direct |
| 15 May, 2026 | Brett Mcbrayer | Chief Executive Officer | Disposed F | 7,777 | $10.85 | $84.38K | 559,990 | Direct |
| 15 May, 2026 | David George Anderson | Vp, Cfo Treasurer, Pres. Als | Disposed F | 2,489 | $10.85 | $27.01K | 80,065 | Direct |
| 15 May, 2026 | Samuel Lyon | President Of Union Electric | Disposed F | 18,185 | $10.85 | $197.31K | 176,224 | Direct |
| 15 May, 2026 | Brett Mcbrayer | Chief Executive Officer | Disposed F | 46,656 | $10.85 | $506.22K | 513,334 | Direct |
| 15 May, 2026 | David George Anderson | Vp, Cfo Treasurer, Pres. Als | Disposed F | 8,216 | $10.85 | $89.14K | 71,849 | Direct |
| 15 May, 2026 | Brett Mcbrayer | Chief Executive Officer | Acquired A | 41,060 | $0.00 | $0 | 554,394 | Direct |
| 15 May, 2026 | David George Anderson | Vp, Cfo Treasurer, Pres. Als | Acquired A | 11,117 | $0.00 | $0 | 82,966 | Direct |
| 15 May, 2026 | Samuel Lyon | President Of Union Electric | Acquired A | 15,056 | $0.00 | $0 | 191,280 | Direct |
| 15 May, 2026 | Elizabeth Anne Fessenden | Director | Acquired A | 7,374 | $0.00 | $0 | 126,704 | Direct |