As of August 04, 2026, the three largest insider holders of NTHI are Amir F Heshmatpour (President, 3.05Mn shares), Amir F Heshmatpour (President, 2.98Mn shares), Ming-Fu (Alan) Chiang (Director, 774.40K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Amir F Heshmatpour | President | 3,052,000 | 0 | 23 Apr, 2026 |
| Jim Delshad | - | 55,310 | 0 | 19 May, 2025 |
| Keithly Garnett | Cfo | 241,200 | 0 | 24 Apr, 2026 |
| Patrick Walters | Coo | 0 | 78,885 | 05 Jun, 2025 |
| Thomas C Chen | Ceo | 551,668 | 0 | 19 May, 2025 |
| Steven L. Giannotta | - | 50,160 | 0 | 28 Mar, 2025 |
| Ming-Fu (Alan) Chiang | - | 390,216 | 384,180 | 05 Jun, 2025 |
| Yousha Neman-Ebrahim | Chief Clinical Officer | 134,760 | 0 | 24 Apr, 2026 |
| David Jr. Suh, | Chief Accounting Officer | 111,866 | 0 | 13 Apr, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 15 Apr, 2025 | Keithly Garnett | Common Stock | A | 300 | $5.38 | 241,200 | D | P |
| 23 Apr, 2026 | Yousha Neman-Ebrahim | Common Stock | A | 500 | $4.88 | 134,760 | D | P |
| 23 Apr, 2026 | Amir F Heshmatpour | Common Stock | A | 10,000 | $4.90 | 3,052,000 | D | P |
| 01 Mar, 2026 | David Jr. Suh, | Common Stock | A | 111,666 | - | 111,666 | D | A |
| 01 Mar, 2026 | David Jr. Suh, | Common Stock | A | 111,666 | - | 111,666 | D | A |
| 01 Mar, 2026 | David Jr. Suh, | Common Stock | A | 111,666 | - | 111,666 | D | A |
| 01 Mar, 2026 | David Jr. Suh, | Common Stock | A | 111,666 | - | 111,666 | D | A |
| 09 Apr, 2026 | David Jr. Suh, | Common Stock | A | 200 | $5.00 | 111,866 | D | P |
| 09 Apr, 2026 | David Jr. Suh, | Common Stock | A | 200 | $5.00 | 111,866 | D | P |
| 09 Apr, 2026 | David Jr. Suh, | Common Stock | A | 200 | $5.00 | 111,866 | D | P |
| 09 Apr, 2026 | David Jr. Suh, | Common Stock | A | 200 | $5.00 | 111,866 | D | P |
| 01 Mar, 2026 | David Jr. Suh, | Common Stock | A | 58,334 | - | 58,334 | D | A |
| 01 Mar, 2026 | David Jr. Suh, | Common Stock | A | 58,334 | - | 58,334 | D | A |
| 01 Mar, 2026 | David Jr. Suh, | Common Stock | A | 58,334 | - | 58,334 | D | A |
| 01 Mar, 2026 | David Jr. Suh, | Common Stock | A | 58,334 | - | 58,334 | D | A |
| 10 Apr, 2026 | Amir F Heshmatpour | Common Stock | A | 10,000 | $4.90 | 3,042,000 | D | P |
| 08 Apr, 2026 | Amir F Heshmatpour | Common Stock | A | 10,000 | $5.61 | 3,027,000 | D | P |
| 09 Apr, 2026 | Amir F Heshmatpour | Common Stock | A | 5,000 | $5.19 | 3,032,000 | D | P |
| 02 Apr, 2026 | Amir F Heshmatpour | Common Stock | A | 20,000 | $6.09 | 3,012,000 | D | P |
| 06 Apr, 2026 | Amir F Heshmatpour | Common Stock | A | 5,000 | $6.32 | 3,017,000 | D | P |