The most recent Perspective Therapeutics (CATX) insider transaction: Alpha Therapy, Llc Lantheus (TenPercentOwner) sold 80,783 shares worth about $250.90K on Sep 3, 2026, reported on Form 4 on Sep 8, 2026. So far in the quarter ending Dec 31, 2026, insider holdings showed no net buying or selling.
In the last 12 months, insiders at Perspective Therapeutics made open-market purchases of $42,241 (20.5K shares) and open-market sales of $1.27 million (403.98K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Holdings, Inc. Lantheus | TenPercentOwner | 11,563,425 | 0 | 11,563,425 | 49.5% | 03 Sep, 2026 |
| 2 | Alpha Therapy, Llc Lantheus | TenPercentOwner | 11,273,364 | 0 | 11,273,364 | 48.2% | 08 Sep, 2026 |
| 3 | Lori A Woods | Ceo | 0 | 183,460 | 183,460 | 0.8% | 01 Apr, 2025 |
| 4 | Markus Puhlmann | Chief Medical Officer | 137,543 | 0 | 137,543 | 0.6% | 26 Jan, 2024 |
| 5 | Johan M. Spoor | Chief Executive Officer | 59,383 | 4,650 | 64,033 | 0.3% | 01 Apr, 2025 |
| 6 | Jonathan Robert Hunt | Chief Accounting Officer | 59,800 | 0 | 59,800 | 0.3% | 17 Nov, 2025 |
| 7 | Juan Graham | Chief Financial Officer | 35,354 | 0 | 35,354 | 0.2% | 01 Apr, 2025 |
| 8 | Heidi Henson | Director | 0 | 25,975 | 25,975 | 0.1% | 06 Dec, 2024 |
| 9 | Mark John Austin | Vp Finance/Prin Finacct Offic | 13,806 | 0 | 13,806 | 0.1% | 24 Apr, 2024 |
| 10 | Robert F Iii Williamson | Director | 0 | 9,864 | 9,864 | 0.0% | 14 Nov, 2025 |
| 11 | Jennifer Streeter | Coo Vp Of Hr | 7,794 | 0 | 7,794 | 0.0% | 22 Sep, 2022 |
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 |
|---|---|---|---|---|---|---|---|---|
| 03 Sep, 2026 | Alpha Therapy, Llc Lantheus | TenPercentOwner | Disposed S | 80,783 | $3.11 | $250.90K | 11,440,513 | Direct |
| 04 Sep, 2026 | Alpha Therapy, Llc Lantheus | TenPercentOwner | Disposed S | 167,149 | $3.15 | $526.05K | 11,273,364 | Direct |
| 31 Aug, 2026 | Alpha Therapy, Llc Lantheus | TenPercentOwner | Disposed S | 78,145 | $3.14 | $245.61K | 11,599,194 | Direct |
| 02 Sep, 2026 | Alpha Therapy, Llc Lantheus | TenPercentOwner | Disposed S | 42,129 | $3.11 | $131.22K | 11,521,296 | Direct |
| 01 Sep, 2026 | Alpha Therapy, Llc Lantheus | TenPercentOwner | Disposed S | 35,769 | $3.12 | $111.57K | 11,563,425 | Direct |
| 01 Sep, 2026 | Holdings, Inc. Lantheus | TenPercentOwner | Disposed S | 35,769 | $3.12 | $111.57K | 11,563,425 | Direct |
| 31 Aug, 2026 | Holdings, Inc. Lantheus | TenPercentOwner | Disposed S | 78,145 | $3.14 | $245.61K | 11,599,194 | Direct |
| 02 Mar, 2026 | Frank Morich | Director | Acquired A | 50,000 | $0.00 | $0 | 50,000 | Direct |
| 02 Mar, 2026 | Jonathan Robert Hunt | Chief Accounting Officer | Acquired A | 90,000 | $0.00 | $0 | 90,000 | Direct |
| 02 Mar, 2026 | Heidi Henson | Director | Acquired A | 50,000 | $0.00 | $0 | 50,000 | Direct |
| 02 Mar, 2026 | Johan M. Spoor | Chief Executive Officer | Acquired A | 735,000 | $0.00 | $0 | 735,000 | Direct |
| 02 Mar, 2026 | Markus Puhlmann | Chief Medical Officer | Acquired A | 150,000 | $0.00 | $0 | 150,000 | Direct |
| 02 Mar, 2026 | Robert F Iii Williamson | Director | Acquired A | 50,000 | $0.00 | $0 | 50,000 | Direct |
| 02 Mar, 2026 | Maria E Martinez | Director | Acquired A | 50,000 | $0.00 | $0 | 50,000 | Direct |
| 02 Mar, 2026 | Lori A Woods | Director | Acquired A | 50,000 | $0.00 | $0 | 50,000 | Direct |
| 13 Nov, 2025 | Jonathan Robert Hunt | Chief Accounting Officer | Acquired P | 11,000 | $2.03 | $22.29K | 59,800 | Direct |
| 12 Nov, 2025 | Robert F Iii Williamson | Director | Acquired P | 9,498 | $2.10 | $19.95K | 9,864 | Indirect |
| 04 Sep, 2025 | Joel Sendek | Chief Financial Officer | Acquired A | 600,000 | $0.00 | $0 | 600,000 | Direct |
| 03 Sep, 2025 | Maria E Martinez | Director | Acquired A | 75,000 | $0.00 | $0 | 75,000 | Direct |
| 28 Mar, 2025 | Johan M. Spoor | Chief Executive Officer | Acquired P | 22,026 | $2.24 | $49.38K | 59,383 | Direct |