GHM's three largest insider shareholders as of September 29, 2026 are Daniel J. Thoren (Executive Chairman, 374.94K shares), Alan E Smith (Vp General Manager Batavia, 66.63K shares), Matthew Malone (President And Ceo, 63.63K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Daniel J. Thoren | Executive Chairman | 374,945 | 0 | 374,945 | 45.2% | 10 Jun, 2026 |
| 2 | Alan E Smith | Vp General Manager Batavia | 66,634 | 0 | 66,634 | 8.0% | 11 Jun, 2025 |
| 3 | Matthew Malone | President And Ceo | 63,629 | 0 | 63,629 | 7.7% | 10 Jun, 2026 |
| 4 | James J Barber | Director | 55,791 | 0 | 55,791 | 6.7% | 03 Jun, 2026 |
| 5 | Alan Fortier | Director | 49,566 | 0 | 49,566 | 6.0% | 21 May, 2024 |
| 6 | Jeffrey Glajch | Vp Finance; Cfo | 44,155 | 0 | 44,155 | 5.3% | 26 Apr, 2022 |
| 7 | Lisa M. Schnorr | Director | 37,867 | 0 | 37,867 | 4.6% | 03 Jun, 2026 |
| 8 | Christopher J. Thome | Vp Finance; Cfo | 35,988 | 0 | 35,988 | 4.3% | 10 Jun, 2026 |
| 9 | Jonathan W Painter | Director | 34,556 | 0 | 34,556 | 4.2% | 03 Jun, 2026 |
| 10 | Jennifer R Condame | Cao And Controller | 28,652 | 0 | 28,652 | 3.5% | 10 Jun, 2022 |
| 11 | Troy A. Stoner | Director | 18,623 | 0 | 18,623 | 2.2% | 03 Jun, 2026 |
| 12 | Cari L Jaroslawsky | Director | 18,623 | 0 | 18,623 | 2.2% | 03 Jun, 2026 |
| 13 | Michael E. Dixon | Vp Gm Of Barber Nichols | 1,263 | 0 | 1,263 | 0.2% | 03 Jun, 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 |
|---|---|---|---|---|---|---|---|---|
| 18 Sep, 2026 | Mauro Gregorio | Director | Disposed G | 936 | $0.00 | $0 | 0 | Direct |
| 02 Sep, 2026 | Mauro Gregorio | Director | Acquired M | 936 | $0.00 | $0 | 2,136 | Direct |
| 02 Sep, 2026 | Mauro Gregorio | Director | Disposed M | 936 | $0.00 | $0 | 0 | Direct |
| 10 Aug, 2026 | Richard Alan Scholes | Chief Growth Enblmnt Officer | Acquired A | 3,678 | $0.00 | $0 | 3,678 | Direct |
| 10 Aug, 2026 | Richard Alan Scholes | Chief Growth Enblmnt Officer | Acquired A | 1,563 | $0.00 | $0 | 1,563 | Direct |
| 08 Jun, 2026 | Daniel J. Thoren | Executive Chairman | Acquired A | 22,101 | $0.00 | $0 | 383,040 | Direct |
| 08 Jun, 2026 | Matthew Malone | President And Ceo | Acquired A | 8,619 | $0.00 | $0 | 66,106 | Direct |
| 08 Jun, 2026 | Christopher J. Thome | Vp Finance; Cfo | Acquired A | 8,619 | $0.00 | $0 | 39,181 | Direct |
| 08 Jun, 2026 | Daniel J. Thoren | Executive Chairman | Disposed F | 8,095 | $95.34 | $771.78K | 374,945 | Direct |
| 08 Jun, 2026 | Christopher J. Thome | Vp Finance; Cfo | Disposed F | 3,193 | $95.34 | $304.42K | 35,988 | Direct |
| 08 Jun, 2026 | Matthew Malone | President And Ceo | Disposed F | 2,477 | $95.34 | $236.16K | 63,629 | Direct |
| 04 Jun, 2026 | Daniel J. Thoren | Executive Chairman | Acquired M | 5,543 | $0.00 | $0 | 362,532 | Direct |
| 04 Jun, 2026 | Matthew Malone | President And Ceo | Acquired M | 1,291 | $0.00 | $0 | 57,858 | Direct |
| 04 Jun, 2026 | Christopher J. Thome | Vp Finance; Cfo | Acquired M | 1,643 | $0.00 | $0 | 31,170 | Direct |
| 04 Jun, 2026 | Daniel J. Thoren | Executive Chairman | Disposed F | 1,593 | $107.96 | $171.98K | 360,939 | Direct |
| 04 Jun, 2026 | Matthew Malone | President And Ceo | Disposed F | 371 | $107.96 | $40.05K | 57,487 | Direct |
| 04 Jun, 2026 | Christopher J. Thome | Vp Finance; Cfo | Disposed F | 608 | $107.96 | $65.64K | 30,562 | Direct |
| 04 Jun, 2026 | Daniel J. Thoren | Executive Chairman | Disposed M | 5,543 | $0.00 | $0 | 5,543 | Direct |
| 04 Jun, 2026 | Christopher J. Thome | Vp Finance; Cfo | Disposed M | 1,643 | $0.00 | $0 | 1,644 | Direct |
| 04 Jun, 2026 | Matthew Malone | President And Ceo | Disposed M | 1,291 | $0.00 | $0 | 1,291 | Direct |