As of March 23, 2026, the three largest insider holders of GHM are Daniel J. Thoren (Executive Chairman, 351.78K shares), James R Lines (President And Ceo, 165.34K shares), Alan E Smith (Vp General Manager Batavia, 66.63K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Daniel J. Thoren | Executive Chairman | 351,783 | 0 | 11 Jun, 2025 |
| James R Lines | President And Ceo | 165,343 | 0 | 20 May, 2021 |
| Alan E Smith | Vp General Manager Batavia | 66,634 | 0 | 11 Jun, 2025 |
| James J Barber | 53,835 | 0 | 04 Jun, 2025 | |
| Matthew Malone | President And Ceo | 53,064 | 0 | 11 Jun, 2025 |
| Alan Fortier | 49,566 | 0 | 21 May, 2024 | |
| Jeffrey Glajch | Vp Finance; Cfo | 44,155 | 0 | 26 Apr, 2022 |
| Lisa M. Schnorr | 35,911 | 0 | 04 Jun, 2025 | |
| Jonathan W Painter | 32,600 | 0 | 04 Jun, 2025 | |
| James J Malvaso | 29,384 | 0 | 02 Jun, 2021 | |
| Jennifer R Condame | Cao And Controller | 28,652 | 0 | 10 Jun, 2022 |
| Christopher J. Thome | Vp Finance; Cfo | 27,360 | 0 | 11 Jun, 2025 |
| Gerard T Mazurkiewicz | 21,088 | 0 | 02 Jun, 2021 | |
| Troy A. Stoner | 16,667 | 0 | 04 Jun, 2025 | |
| Cari L Jaroslawsky | 16,667 | 0 | 04 Jun, 2025 | |
| Mauro Gregorio | 1,200 | 0 | 15 Sep, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 12 Sep, 2025 | Mauro Gregorio | Common Stock | A | 1,200 | $49.01 | 1,200 | D | P |
| 02 Sep, 2025 | Mauro Gregorio | Restricted Stock Units | A | 936 | $0.00 | 936 | D | A |
| 09 Jun, 2025 | Matthew Malone | Common Stock | A | 7,693 | $0.00 | 55,275 | D | A |
| 09 Jun, 2025 | Daniel J. Thoren | Common Stock | A | 20,513 | $0.00 | 359,177 | D | A |
| 09 Jun, 2025 | Christopher J. Thome | Common Stock | A | 7,436 | $0.00 | 30,040 | D | A |
| 09 Jun, 2025 | Alan E Smith | Common Stock | A | 7,693 | $0.00 | 70,253 | D | A |
| 09 Jun, 2025 | Alan E Smith | Common Stock | D | 3,619 | $44.66 | 66,634 | D | F |
| 09 Jun, 2025 | Matthew Malone | Common Stock | D | 2,211 | $44.66 | 53,064 | D | F |
| 09 Jun, 2025 | Daniel J. Thoren | Common Stock | D | 7,394 | $44.66 | 351,783 | D | F |
| 09 Jun, 2025 | Christopher J. Thome | Common Stock | D | 2,680 | $44.66 | 27,360 | D | F |
| 04 Jun, 2025 | Daniel J. Thoren | Common Stock | A | 5,542 | $0.00 | 340,661 | D | M |
| 04 Jun, 2025 | Alan E Smith | Common Stock | A | 1,291 | $0.00 | 63,167 | D | M |
| 04 Jun, 2025 | Christopher J. Thome | Common Stock | A | 1,643 | $0.00 | 23,196 | D | M |
| 04 Jun, 2025 | Matthew Malone | Common Stock | A | 1,291 | $0.00 | 47,953 | D | M |
| 04 Jun, 2025 | Christopher J. Thome | Common Stock | D | 592 | $40.89 | 22,604 | D | F |
| 04 Jun, 2025 | Alan E Smith | Common Stock | D | 607 | $40.89 | 62,560 | D | F |
| 04 Jun, 2025 | Daniel J. Thoren | Common Stock | D | 1,997 | $40.89 | 338,664 | D | F |
| 04 Jun, 2025 | Matthew Malone | Common Stock | D | 371 | $40.89 | 47,582 | D | F |
| 04 Jun, 2025 | Daniel J. Thoren | Restricted Stock Units | D | 5,542 | $0.00 | 11,086 | D | M |
| 04 Jun, 2025 | Alan E Smith | Restricted Stock Units | D | 1,291 | $0.00 | 2,582 | D | M |