Plus Therapeutics, Inc. (PSTV) has 20 known insider and institutional holders on record. The largest holder is Lim Kian Thiam with 7,400,000 shares. Other notable holders include Swissquote Bank SA and PostFinance AG.
Over the last 12 months, insiders have made 19 transactions in PSTV stock — 17 buys (valued at $1.6M) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
PSTV Insider Ownership
Top Holder
Lim Kian Thiam
7,400,000 shares
Buys (12 mo)
17
$1.6M value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Lim Kian Thiam |
10 Percent Owner |
7,400,000 |
2015-04-20 |
|
| 2 |
Swissquote Bank Sa |
10 Percent Owner |
5,416,655 |
2018-01-11 |
|
| 3 |
Postfinance Ag |
10 Percent Owner |
4,543,086 |
2018-02-15 |
|
| 4 |
Saad Mark E |
Chief Financial Officer |
1,090,000 |
2014-04-15 |
|
| 5 |
Shirahama Norio Seijiro |
President - Asia Pacific |
832,500 |
2015-02-03 |
|
| 6 |
Olympus Corp |
10 Percent Owner |
500,000 |
2008-08-11 |
|
| 7 |
Hedrick Marc H |
Chief Executive Officer |
499,468 |
2026-04-01 |
|
| 8 |
Cox Marshall G |
Director |
480,000 |
2007-02-28 |
|
| 9 |
Hawkins Richard J |
Director |
397,794 |
2025-08-15 |
|
| 10 |
Reuter Bruce |
SVP Sales, Market., Distr. |
394,686 |
2009-02-02 |
|
| 11 |
Schulzki Sharon |
Chief Operating Officer |
380,000 |
2005-02-04 |
|
| 12 |
Van Es-johansson An |
Director |
297,794 |
2025-08-15 |
|
| 13 |
Clowes Howard |
Director |
297,794 |
2025-08-15 |
|
| 14 |
Galetto Charles |
Sr. Vice President Finance & A |
280,000 |
2006-01-26 |
|
| 15 |
Arm Douglas M |
Sr. VP - Operations |
185,000 |
2009-05-04 |
|
| 16 |
Scarbrough Elizabeth |
Vice President Marketing & Dev |
176,250 |
2006-01-26 |
|
| 17 |
Fraser John K |
Vice President Research & Tech |
166,250 |
2005-02-04 |
|
| 18 |
Scott Matthew |
Vice President Sales |
165,000 |
2004-06-04 |
|
| 19 |
Milstein Alexander M |
VP - Clinical Development |
155,000 |
2009-02-02 |
|
| 20 |
Sims Andrew John Hugh Macintyre |
Chief Financial Officer |
144,784 |
2026-04-01 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-04-01 |
Sims Andrew John Hugh Macintyre |
Chief Financial Officer |
Option Exercise |
38,323 |
- |
- |
| 2026-04-01 |
Hedrick Marc H |
Chief Executive Officer |
Option Exercise |
159,681 |
- |
- |
| 2026-03-20 |
Andrews Ronald Asbury |
Director |
Unknown |
- |
- |
- |
| 2026-02-25 |
Sims Andrew John Hugh Macintyre |
Chief Financial Officer |
RSU Award |
349,541 |
$0.28 |
$97.87K |
| 2026-02-25 |
Hedrick Marc H |
Chief Executive Officer |
RSU Award |
2,419,582 |
$0.28 |
$677.48K |
| 2026-01-01 |
Sims Andrew John Hugh Macintyre |
Chief Financial Officer |
Option Exercise |
38,323 |
- |
- |
| 2026-01-01 |
Hedrick Marc H |
Chief Executive Officer |
Option Exercise |
159,681 |
- |
- |
| 2025-11-04 |
Sims Andrew John Hugh Macintyre |
Chief Financial Officer |
Informative Buy |
20,000 |
$0.51 |
$10.2K |
| 2025-10-01 |
Sims Andrew John Hugh Macintyre |
Chief Financial Officer |
Option Exercise |
38,323 |
- |
- |
| 2025-10-01 |
Hedrick Marc H |
Chief Executive Officer |
Option Exercise |
159,681 |
- |
- |
| 2025-08-22 |
Lenk Robert P |
Director |
Informative Buy |
110,000 |
$0.49 |
$53.78K |
| 2025-08-13 |
Clowes Howard |
Director |
RSU Award |
297,794 |
$0.57 |
$171.05K |
| 2025-08-13 |
Sims Andrew John Hugh Macintyre |
Chief Financial Officer |
RSU Award |
459,878 |
- |
- |
| 2025-08-13 |
Van Es-johansson An |
Director |
RSU Award |
297,794 |
$0.57 |
$171.05K |
| 2025-08-13 |
Guse Kyle |
Director |
RSU Award |
40,000 |
$0.57 |
$22.98K |
| 2025-04-18 |
Guse Kyle |
Director |
Unknown |
- |
- |
- |
| 2025-08-13 |
Lenk Robert P |
Director |
RSU Award |
297,794 |
$0.57 |
$171.05K |
| 2025-08-13 |
Hawkins Richard J |
Director |
RSU Award |
397,794 |
$0.57 |
$228.49K |
| 2025-08-13 |
Hedrick Marc H |
Chief Executive Officer |
RSU Award |
1,916,168 |
- |
- |
