Perspective Therapeutics, Inc. (CATX) has 12 known insider and institutional holders on record. The largest holder is Lantheus Alpha Therapy, LLC with 116,773,394 shares. Other notable holders include Spoor Johan M. and Sendek Joel.
Over the last 12 months, insiders have made 14 transactions in CATX stock — 12 buys (valued at $8.97M) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
CATX Insider Ownership
Top Holder
Lantheus Alpha Therapy, LLC
116,773,394 shares
Buys (12 mo)
12
$8.97M value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Lantheus Alpha Therapy, Llc |
10 Percent Owner |
116,773,394 |
2024-03-08 |
|
| 2 |
Spoor Johan M. |
Chief Executive Officer |
735,000 |
2026-03-04 |
|
| 3 |
Sendek Joel |
Chief Financial Officer |
600,000 |
2025-09-05 |
|
| 4 |
Puhlmann Markus |
Chief Medical Officer |
150,000 |
2026-03-04 |
|
| 5 |
Hunt Jonathan Robert |
Chief Accounting Officer |
90,000 |
2026-03-04 |
|
| 6 |
Woods Lori A |
Director |
50,000 |
2026-03-04 |
|
| 7 |
Martinez Maria E |
Director |
50,000 |
2026-03-04 |
|
| 8 |
Williamson Robert F Iii |
Director |
50,000 |
2026-03-04 |
|
| 9 |
Henson Heidi |
Director |
50,000 |
2026-03-04 |
|
| 10 |
Morich Frank |
Director |
50,000 |
2026-03-04 |
|
| 11 |
Graham Juan |
Chief Financial Officer |
35,354 |
2025-04-01 |
|
| 12 |
Austin Mark John |
VP Finance/prin Fin&acct Offic |
34,500 |
2024-07-19 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-02 |
Puhlmann Markus |
Chief Medical Officer |
RSU Award |
150,000 |
$5.35 |
$802.5K |
| 2026-03-02 |
Martinez Maria E |
Director |
RSU Award |
50,000 |
$5.35 |
$267.5K |
| 2026-03-02 |
Morich Frank |
Director |
RSU Award |
50,000 |
$5.35 |
$267.5K |
| 2026-03-02 |
Spoor Johan M. |
Chief Executive Officer |
RSU Award |
735,000 |
$5.35 |
$3.93M |
| 2026-03-02 |
Williamson Robert F Iii |
Director |
RSU Award |
50,000 |
$5.35 |
$267.5K |
| 2026-03-02 |
Woods Lori A |
Director |
RSU Award |
50,000 |
$5.35 |
$267.5K |
| 2026-03-02 |
Hunt Jonathan Robert |
Chief Accounting Officer |
RSU Award |
90,000 |
$5.35 |
$481.5K |
| 2026-03-02 |
Henson Heidi |
Director |
RSU Award |
50,000 |
$5.35 |
$267.5K |
| 2025-11-13 |
Hunt Jonathan Robert |
Chief Accounting Officer |
Informative Buy |
11,000 |
$2.03 |
$22.29K |
| 2025-11-12 |
Williamson Robert F Iii |
Director |
Informative Buy |
9,498 |
$2.10 |
$19.95K |
| 2025-09-03 |
Martinez Maria E |
Director |
RSU Award |
75,000 |
$3.38 |
$253.5K |
| 2025-09-03 |
Martinez Maria E |
Officer |
Unknown |
- |
- |
- |
| 2025-09-04 |
Sendek Joel |
Chief Financial Officer |
RSU Award |
600,000 |
$3.54 |
$2.12M |
| 2025-09-04 |
Sendek Joel |
Officer |
Unknown |
- |
- |
- |
