Isoray Inc

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Isoray Inc
TickerCATX
CIK #0000728387
CUSIP46489V302
SectorLife Sciences - Surgical & Medical Instruments & Apparatus
Address350 Hills Street, Suite 106, Richland, WA 99354
Source [EDGAR]
Reg D Offering (Form D) Filed Raised Terms
Perspective Therapeutics Inc 2024-03-18 87.4 M Exemption: 506(b) · Duration: One year or less · Commission: $5,113,455 · Revenue: Decline to Disclose
Isoray Inc 2018-07-25 0.7 M Exemption: 506(b) · Duration: One year or less · Commission: $46,200 · Revenue: Decline to Disclose
CIK Filing 2011 - 2026
[0000728387] 10-K
[0000728387] 10-Q
[0000728387] 3
[0000728387] 4
[0000728387] 8-K
[0000728387] D
[0000728387] SC 13D
[0000728387] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Millennium Management LLC Perspective Therapeutics Inc [2026-07-20] 0.0
Millennium Management LLC Perspective Therapeutics Inc [2026-06-30] 0.0
Avidity Partners Management LP Perspective Therapeutics Inc [2026-03-10] 0.0
Morgan Stanley Perspective Therapeutics Inc [2026-02-12] 0.0
Commodore Capital LP Perspective Therapeutics Inc [2026-02-09] 0.0
TCG Crossover GP II LLC Perspective Therapeutics Inc [2026-02-06] 0.0
Qatar Investment Authority Perspective Therapeutics Inc [2026-02-05] 0.0
Avidity Partners Management LP Perspective Therapeutics Inc [2024-11-14] 5.3
Janus Henderson Group PLC Perspective Therapeutics Inc [2024-11-14] 7.1
BlackRock Inc Perspective Therapeutics Inc [2024-11-08] 6.0
FMR LLC Perspective Therapeutics Inc [2024-11-07] 0.0
BlackRock Inc Perspective Therapeutics Inc [2024-10-24] 6.0
Commodore Capital LP Perspective Therapeutics Inc [2024-04-19] 6.6
Lantheus Holdings Inc Perspective Therapeutics Inc [2024-02-01] 819410.74
Schultz Michael K Perspective Therapeutics Inc [2023-09-19] 6.3
Johnson Frances Perspective Therapeutics Inc [2023-09-19] 6.3
Sabby Management LLC Isoray Inc [2013-09-03] 5.39
[2012-07-24] None
Form 3/4/5 Filer 2011 - 2026
Hunt Jonathan Robert
Perspective Therapeutics Inc
Woods Lori A
Williamson Robert F III
Spoor Johan M
Morich Frank
Martinez Maria E
Puhlmann Markus
Henson Heidi
Graham Juan
Austin Mark John
Lantheus Alpha Therapy LLC
Lantheus Holdings Inc
Streeter Jennifer
McCormick Michael W
Cavanagh William
Vitale Philip J
Hoffmann Alan
Krachon Michael
Cline Krista
Lavoy Thomas C
Branson Matthew
Ragle Brien
Babcock Dwight William
Swindler Fredric
Kauffman Robert R
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Martinez Maria E
Stock option (right to buy) · derivative
2026-03-02 Grant 50,000 $0.00
Williamson Robert F III
Stock option (right to buy) · derivative
2026-03-02 Grant 50,000 $0.00
Henson Heidi
Stock option (right to buy) · derivative
2026-03-02 Grant 50,000 $0.00
Woods Lori A
Stock option (right to buy) · derivative
2026-03-02 Grant 50,000 $0.00
Spoor Johan M
Stock option (right to buy) · derivative
2026-03-02 Grant 735,000 $0.00
Hunt Jonathan Robert
Stock option (right to buy) · derivative
2026-03-02 Grant 90,000 $0.00
Puhlmann Markus
Stock option (right to buy) · derivative
2026-03-02 Grant 150,000 $0.00
Morich Frank
Stock option (right to buy) · derivative
2026-03-02 Grant 50,000 $0.00
Hunt Jonathan Robert
Common Stock
2025-11-13 Buy 11,000 $2.03 22,330
Williamson Robert F III
Common Stock
2025-11-12 Buy 9,498 $2.10 19,946
Stock option (right to buy) · derivative
2025-09-04 Grant 600,000 $0.00
Stock option (right to buy) · derivative
2025-09-03 Grant 75,000 $0.00
Woods Lori A
Common Stock
2025-03-31 Buy 23,475 $2.13 50,002
Williamson Robert F III
Common Stock
2025-03-31 Buy 38,145 $2.14 81,630
Spoor Johan M
Common Stock
2025-03-28 Buy 22,026 $2.24 49,338
Spoor Johan M
Common Stock
2025-03-28 Buy 4,650 $2.21 10,276
Williamson Robert F III
Common Stock
2025-03-28 Buy 22,192 $2.27 50,376
Graham Juan
Common Stock
2025-03-28 Buy 33,333 $2.25 74,999
Puhlmann Markus
Stock option (right to buy) · derivative
2025-03-03 Grant 165,000 $0.00
Hunt Jonathan Robert
Stock option (right to buy) · derivative
2025-03-03 Grant 75,000 $0.00
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 139 85,104,585
2025-12-31 117 36,667,088
2025-09-30 105 43,225,578
2025-06-30 100 42,510,878
2025-03-31 113 44,337,163
2024-12-31 136 47,489,700
2024-09-30 130 48,653,344
2024-06-30 106 38,048,150
2024-03-31 105 248,910,492
2023-12-31 53 36,646,328
2023-09-30 50 36,512,189
2023-06-30 51 32,971,571
Form 13F Holdings
Firm Period DFND Voting Shares
Taylor & Morgan Wealth Management LLC [2026-06-30] SOLE 0 66,000
Curated Wealth Partners LLC [2026-06-30] OTR 0 65,000
KOA Wealth Management LLC [2026-06-30] SOLE 0 25,975
Farther Finance Advisors LLC [2026-06-30] SOLE 0 348
Gamma Investing LLC [2026-06-30] DFND 340 340
Vermillion Wealth Management Inc [2026-06-30] SOLE 0 194
True Wealth Design LLC [2026-06-30] SOLE 0 65
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