person · Reporting owner
Williamson Robert F III
Disclosed activity across 1 company
Sign in to followReported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Perspective Therapeutics, Inc.CATX · Entity 694 | Director | March 02, 2026 | March 04, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Perspective Therapeutics, Inc.
Report date March 02, 2026 · Filed March 04, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Stock option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $5.35 · Expires 2036-03-02 | Direct | 50,000 |
Reported balance
After 2026-03-02 transaction · row 1
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 1 · 2026-03-02 · Grant · Acquired 50,000 · Balance 50,000 F1: The option grant was approved by the Issuer's Board of Directors on January 26, 2026, with a grant date of March 2, 2026, and represents the Reporting Person's annual equity award for 2026. F2: Option vests in full on March 2, 2027, subject to the Reporting Person's continued service on the vesting date. |
Filing footnotes · ownership attribution and instrument terms
F1: The option grant was approved by the Issuer's Board of Directors on January 26, 2026, with a grant date of March 2, 2026, and represents the Reporting Person's annual equity award for 2026.
F2: Option vests in full on March 2, 2027, subject to the Reporting Person's continued service on the vesting date.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| March 02, 2026 Filed Mar 4, 2026 21:37 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | GrantStock option (right to buy) · Derivative | 50,000 | $0.00 Strike: $5.35 | $0.00 |
DisclosureSEC source: 0001397331-26-000002 · ownership.xml · derivative · entry 1 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 50,000 Underlying: Common Stock · 50,000 shares Expires 2036-03-02 F1 · date: The option grant was approved by the Issuer's Board of Directors on January 26, 2026, with a grant date of March 2, 2026, and represents the Reporting Person's annual equity award for 2026. F2 · derivative.exercise_date: Option vests in full on March 2, 2027, subject to the Reporting Person's continued service on the vesting date. Read SEC document |
| November 12, 2025 Filed Nov 14, 2025 13:00 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 9,498 | $2.10 | $19,945.80 |
DisclosureSEC source: 0001193125-25-281626 · ownership.xml · nonDerivative · entry 1 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Indirect · RFW3 Revocable Trust Disclosed balance after: 9,864 Read SEC document |
| March 31, 2025 Filed Apr 1, 2025 21:04 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 38,145 | $2.14 | $81,775.25 |
DisclosureSEC source: 0000950170-25-048698 · ownership.xml · nonDerivative · entry 2 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 108,982 F1 · price: The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.12 to $2.1697, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price in the transaction described in this footnote. Read SEC document |
| March 28, 2025 Filed Apr 1, 2025 21:04 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 22,192 | $2.27 | $50,375.84 |
DisclosureSEC source: 0000950170-25-048698 · ownership.xml · nonDerivative · entry 1 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 70,837 Read SEC document |
| March 03, 2025 Filed Mar 5, 2025 21:22 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | GrantStock option (right to buy) · Derivative | 50,000 | $0.00 Strike: $2.46 | $0.00 |
DisclosureSEC source: 0000950170-25-033637 · ownership.xml · derivative · entry 1 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 50,000 Underlying: Common Stock · 50,000 shares Expires 2035-03-03 F1 · date: The option grant was approved by the Issuer's Board of Directors on February 12, 2025, with a grant date of March 3, 2025, and represents the Reporting Person's annual equity award for 2025. F2 · derivative.exercise_date: Option vests in full on March 3, 2026, subject to the Reporting Person's continued service on the vesting date. Read SEC document |
| November 25, 2024 Filed Nov 27, 2024 12:05 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 2,619 | $3.67 | $9,611.73 |
DisclosureSEC source: 0000950170-24-131251 · ownership.xml · nonDerivative · entry 2 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 430,058 Read SEC document |
| November 25, 2024 Filed Nov 27, 2024 12:05 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 3,647 | $3.62 | $13,201.78 |
DisclosureSEC source: 0000950170-24-131251 · ownership.xml · nonDerivative · entry 1 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 427,439 Read SEC document |
| June 20, 2024 Filed Jun 24, 2024 20:19 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | GrantStock option (right to buy) · Derivative | 23,000 | $0.00 Strike: $10.65 | $0.00 |
DisclosureSEC source: 0000950170-24-076736 · ownership.xml · derivative · entry 1 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 23,000 Underlying: Common Stock · 23,000 shares Expires 2034-06-20 F1 · derivative.exercise_date: This option shall fully vest on the first anniversary after the Grant Date (06/20/2024), subject to a continued service relationship. Read SEC document |
| May 31, 2024 Filed Jun 3, 2024 20:01 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 55,000 | $1.38 | $75,900.00 |
DisclosureSEC source: 0000950170-24-067945 · ownership.xml · nonDerivative · entry 1 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 423,792 Read SEC document |
| May 29, 2024 Filed May 30, 2024 20:05 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 18,656 | $1.34 | $24,999.04 |
DisclosureSEC source: 0000950170-24-066557 · ownership.xml · nonDerivative · entry 2 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 368,792 Read SEC document |
| May 29, 2024 Filed May 30, 2024 20:05 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 11,375 | $1.32 | $15,015.00 |
DisclosureSEC source: 0000950170-24-066557 · ownership.xml · nonDerivative · entry 1 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 350,136 Read SEC document |
| January 30, 2024 Filed Feb 1, 2024 21:53 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 3,500 | $0.70 | $2,450.00 |
DisclosureSEC source: 0001437749-24-002837 · rdgdoc.xml · nonDerivative · entry 6 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 338,761 Read SEC document |
| January 30, 2024 Filed Feb 1, 2024 21:53 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 42,879 | $0.72 | $30,872.88 |
DisclosureSEC source: 0001437749-24-002837 · rdgdoc.xml · nonDerivative · entry 5 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 335,261 Read SEC document |
| January 30, 2024 Filed Feb 1, 2024 21:53 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 57,121 | $0.71 | $40,555.91 |
DisclosureSEC source: 0001437749-24-002837 · rdgdoc.xml · nonDerivative · entry 4 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 292,382 Read SEC document |
| January 30, 2024 Filed Feb 1, 2024 21:53 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 5,127 | $0.71 | $3,640.17 |
DisclosureSEC source: 0001437749-24-002837 · rdgdoc.xml · nonDerivative · entry 3 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 235,261 Read SEC document |
| January 30, 2024 Filed Feb 1, 2024 21:53 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 18,579 | $0.71 | $13,191.09 |
DisclosureSEC source: 0001437749-24-002837 · rdgdoc.xml · nonDerivative · entry 2 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 230,134 Read SEC document |
| January 29, 2024 Filed Jan 30, 2024 21:57 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 21,235 | $0.64 | $13,590.40 |
DisclosureSEC source: 0001437749-24-002571 · rdgdoc.xml · nonDerivative · entry 8 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 211,555 Read SEC document |
| January 29, 2024 Filed Jan 30, 2024 21:57 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 4,031 | $0.64 | $2,579.84 |
DisclosureSEC source: 0001437749-24-002571 · rdgdoc.xml · nonDerivative · entry 7 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 190,320 Read SEC document |
| January 26, 2024 Filed Jan 30, 2024 21:57 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 50,000 | $0.54 | $27,000.00 |
DisclosureSEC source: 0001437749-24-002571 · rdgdoc.xml · nonDerivative · entry 6 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 186,289 Read SEC document |
| January 26, 2024 Filed Jan 30, 2024 21:57 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 25,000 | $0.55 | $13,750.00 |
DisclosureSEC source: 0001437749-24-002571 · rdgdoc.xml · nonDerivative · entry 5 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 136,289 Read SEC document |
| January 26, 2024 Filed Jan 30, 2024 21:57 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 8,513 | $0.59 | $5,022.67 |
DisclosureSEC source: 0001437749-24-002571 · rdgdoc.xml · nonDerivative · entry 4 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 111,289 Read SEC document |
| January 26, 2024 Filed Jan 30, 2024 21:57 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 14,850 | $0.61 | $9,058.50 |
DisclosureSEC source: 0001437749-24-002571 · rdgdoc.xml · nonDerivative · entry 3 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 102,776 Read SEC document |
| January 26, 2024 Filed Jan 30, 2024 21:57 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 12,250 | $0.61 | $7,472.50 |
DisclosureSEC source: 0001437749-24-002571 · rdgdoc.xml · nonDerivative · entry 2 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 87,926 Read SEC document |
| January 25, 2024 Filed Jan 26, 2024 22:38 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 22,134 | $0.49 | $10,845.66 |
DisclosureSEC source: 0001437749-24-002322 · rdgdoc.xml · nonDerivative · entry 2 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 75,676 Read SEC document |
| January 24, 2024 Filed Jan 26, 2024 22:38 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 29,862 | $0.49 | $14,632.38 |
DisclosureSEC source: 0001437749-24-002322 · rdgdoc.xml · nonDerivative · entry 1 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 53,542 Read SEC document |
| December 21, 2023 Filed Dec 26, 2023 22:00 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 3,663 | $0.33 | $1,202.56 |
DisclosureSEC source: 0001437749-23-035321 · rdgdoc.xml · nonDerivative · entry 1 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Indirect · By RFW3 Revocable Trust Disclosed balance after: 3,663 F1 · price: This price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $0.3249 to $0.3300, inclusive. The reporting person undertakes to provide to Perspective Therapeutics, Inc., any security holder of Perspective Therapeutics, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote (1) to this Form 4. Read SEC document |
| December 19, 2023 Filed Dec 20, 2023 00:10 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 13,680 | $0.32 | $4,377.60 |
DisclosureSEC source: 0001437749-23-034933 · rdgdoc.xml · nonDerivative · entry 2 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 23,680 Read SEC document |
| December 18, 2023 Filed Dec 20, 2023 00:10 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | PurchaseCommon Stock | 10,000 | $0.26 | $2,600.00 |
DisclosureSEC source: 0001437749-23-034933 · rdgdoc.xml · nonDerivative · entry 1 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 10,000 Read SEC document |
| December 12, 2023 Filed Dec 14, 2023 23:32 UTC | Perspective Therapeutics, Inc. CATX · Entity 694 | GrantStock Options (right to buy) · Derivative | 230,000 | $0.00 Strike: $0.24 | $0.00 |
DisclosureSEC source: 0001437749-23-034473 · rdgdoc.xml · derivative · entry 1 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 930,000 Underlying: Common Stock · 230,000 shares Expires 2033-12-12 F1 · derivative.exercise_date: 100% vests 12/12/2024. Read SEC document |
| February 21, 2023 Filed Mar 17, 2023 21:10 UTC | Perspective Therapeutics, Inc. ISR · Entity 694 | GrantStock Options (right to buy) · Derivative | 230,000 | $0.00 Strike: $0.38 | $0.00 |
DisclosureSEC source: 0001437749-23-007085 · rdgdoc.xml · derivative · entry 2 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 700,000 Underlying: Common Stock · 230,000 shares Expires 2033-02-21 F2 · derivative.exercise_date: 100% vests 2/21/2024. Read SEC document |
| February 21, 2023 Filed Mar 17, 2023 21:10 UTC | Perspective Therapeutics, Inc. ISR · Entity 694 | GrantStock Options (right to buy) · Derivative | 470,000 | $0.00 Strike: $0.38 | $0.00 |
DisclosureSEC source: 0001437749-23-007085 · rdgdoc.xml · derivative · entry 1 Williamson Robert F III · CIK 0001397331 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 470,000 Underlying: Common Stock · 470,000 shares Expires 2033-02-21 F1 · derivative.exercise_date: Vest monthly over three years. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.