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Perspective Therapeutics, Inc.

CATX
Exchange
NYSE
Industry
Pharmaceutical Preparations
SEC CIK
0000728387

In the last 90 days, Perspective Therapeutics, Inc. insiders filed 2 open-market purchases and 5 sales; 131 institutions reported holding it in 13F filings for Q2 2026, worth $297.6M in total; no superinvestor holds it.

Holders of 5% or more of CATX

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Perspective Therapeutics, Inc., largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of CATX
HolderLatest formStakeChangeFirst filedLatest filingFiling
Commodore Capital LP13G9.90%11.9M shares–Apr 19, 20243 filingsFeb 9, 2026SEC
TCG Crossover GP II, LLC13G6.90%7.92M sharesNewFeb 6, 20261 filingFeb 6, 2026SEC
BlackRock, Inc.13G6.80%7.78M shares+2.20 ppfrom 4.60%Oct 24, 20244 filingsJul 29, 2026SEC
Qatar Investment Authority13G6.20%7.07M sharesNewFeb 5, 20261 filingFeb 5, 2026SEC
Johnson Frances13G/A5.90%16.8M shares–Sep 19, 20232 filingsFeb 5, 2024SEC
Schultz Michael K13G/A5.90%16.8M shares–Sep 19, 20232 filingsFeb 5, 2024SEC
Millennium Management LLC13G/A5.50%6.32M shares+0.20 ppfrom 5.30%Jun 30, 20263 filingsAug 13, 2026SEC
Avidity Partners Management LP13G5.30%6.05M shares+1.10 ppfrom 4.20%Nov 14, 20243 filingsMar 10, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

34 Schedule 13D and 13G filings on Perspective Therapeutics, Inc., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on CATX
Filed (ET)FilerFormStakeChangeEvent dateFiling
Nov 12, 20264:34 PM ETLantheus Holdings, Inc.and 2 others13D/A3.90%4.74M shares−3.80 ppfrom 7.70%Below 5%Nov 10, 2026SEC
Nov 10, 20268:57 AM ETState Street Corp13G1.80%2.03M shares−3.50 ppfrom 5.30%Below 5%Sep 30, 2026SEC
Sep 23, 20264:19 PM ETLantheus Holdings, Inc.and 2 others13D/A7.70%8.74M shares−2.30 ppfrom 10.00%Sep 21, 2026SEC
Sep 4, 20264:48 PM ETLantheus Holdings, Inc.and 2 others13D/A10.00%11.4M shares–May 15, 2024SEC
Aug 13, 20267:58 PM ETMillennium Management LLCand 3 others13G/A5.50%6.32M shares+0.20 ppfrom 5.30%Aug 7, 2026SEC
Aug 7, 202610:42 AM ETState Street Corp13G5.30%6.05M sharesNewJun 30, 2026SEC
Jul 29, 20263:19 PM ETBlackRock, Inc.13G6.80%7.78M shares+2.20 ppfrom 4.60%Jun 30, 2026SEC
Jul 20, 20265:23 PM ETMillennium Management LLCand 2 others13G5.30%6.04M shares+1.00 ppfrom 4.30%Jul 13, 2026SEC
Jun 30, 20265:36 PM ETMillennium Management LLCand 2 others13G4.30%4.89M sharesNewBelow 5%Jun 23, 2026SEC
May 12, 202612:47 PM ETMorgan Stanley13G/A2.60%2.96M shares−3.40 ppfrom 6.00%Below 5%Mar 31, 2026SEC
Apr 27, 20264:12 PM ETBlackRock, Inc.13G/A4.60%5.25M shares–Below 5%Mar 31, 2026SEC
Mar 10, 20268:36 PM ETAvidity Partners Management LPand 5 others13G5.30%6.05M shares+1.10 ppfrom 4.20%Feb 20, 2026SEC
Feb 12, 202610:50 AM ETMorgan Stanley13G6.00%4.46M sharesNewDec 31, 2025SEC
Feb 9, 20264:40 PM ETCommodore Capital LPand 3 others13G9.90%11.9M shares–Feb 2, 2026SEC
Feb 6, 20264:45 PM ETTCG Crossover GP II, LLCand 4 others13G6.90%7.92M sharesNewFeb 3, 2026SEC
Feb 5, 20268:48 AM ETQatar Investment Authority13G6.20%7.07M sharesNewFeb 4, 2026SEC
Dec 5, 20252:03 PM ETFMR LLCand 1 other13G/A0.40%312.2K shares−7.80 ppfrom 8.20%Below 5%Nov 28, 2025SEC
Nov 7, 202511:13 AM ETFMR LLCand 1 other13G/A8.20%6.06M shares–Oct 31, 2025SEC
Feb 14, 202511:37 AM ETJanus Henderson Group PLC13G/A0.00%17.8K shares–Below 5%Dec 31, 2024SEC
Feb 14, 202510:26 AM ETAvidity Partners Management LPand 5 others13G/A4.20%2.84M shares–Below 5%Dec 31, 2024SEC
Nov 14, 2024Commodore Capital LP13G/AOld format–––SEC
Nov 14, 2024Janus Henderson Group PLC13GOld format–New–SEC
Nov 14, 2024Avidity Partners Management LP13GOld format–New–SEC
Nov 8, 2024BlackRock, Inc.13GOld format–––SEC
Nov 7, 2024FMR LLC13G/AOld format–––SEC
Nov 7, 2024FMR LLC13GOld format–New–SEC
Oct 24, 2024BlackRock, Inc.13GOld format–New–SEC
Apr 19, 2024Commodore Capital LP13GOld format–New–SEC
Mar 8, 2024Lantheus Holdings, Inc.13D/AOld format–––SEC
Feb 5, 20247:18 PM ETJohnson Frances13G/A5.90%16.8M shares–Dec 31, 2023SEC
Feb 5, 20245:35 PM ETSchultz Michael K13G/A5.90%16.8M shares–Dec 31, 2023SEC
Feb 1, 2024Lantheus Holdings, Inc.13DOld format–New–SEC
Sep 19, 2023Schultz Michael K13GOld format–New–SEC
Sep 19, 2023Johnson Frances13GOld format–New–SEC

Form 144: proposed insider sales

1 notice from officers, directors and other affiliates planning to sell Perspective Therapeutics, Inc. shares, newest first.

Form 144 notices for CATX
Filed (ET)SellerShares to sellMarket valuePlanned saleBrokerFiling
Sep 12, 20242:44 PM ETMark AustinAffiliate2.50K$39.5KSep 12, 2024Global Shares Financial Services, IncSEC