Plus Therapeutics, Inc. (PSTV) Insider Ownership

Historic Insider Ownership Trends

As of March 23, 2026, Plus Therapeutics's top three insider holders are Marc H Hedrick (Chief Executive Officer, 339.79K shares), Robert P Lenk (Director, 139.33K shares), Andrew John Hugh Macintyre Sims (Chief Financial Officer, 106.46K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Marc H Hedrick Chief Executive Officer 339,787 0 02 Jan, 2026
Robert P Lenk 139,327 0 25 Aug, 2025
Andrew John Hugh Macintyre Sims Chief Financial Officer 106,461 0 02 Jan, 2026
Greg Petersen 48,921 0 13 Sep, 2024
Howard Clowes 26,497 0 13 Sep, 2024
Richard J Hawkins 15,188 0 17 Sep, 2024

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
25 Feb, 2026 Marc H Hedrick Restricted Stock Units A 2,419,582 $0.00 4,016,388 D A
25 Feb, 2026 Andrew John Hugh Macintyre Sims Restricted Stock Units A 349,542 $0.00 732,774 D A
25 Feb, 2026 Andrew John Hugh Macintyre Sims Stock Option (Right to Buy) A 349,541 $0.00 349,541 D A
25 Feb, 2026 Marc H Hedrick Stock Option (Right to Buy) A 2,419,582 $0.00 2,419,582 D A
01 Jan, 2026 Andrew John Hugh Macintyre Sims Common Stock A 38,323 $0.00 106,461 D M
01 Jan, 2026 Marc H Hedrick Common Stock A 159,681 $0.00 339,787 D M
01 Jan, 2026 Andrew John Hugh Macintyre Sims Restricted Stock Units D 38,323 $0.00 383,232 D M
01 Jan, 2026 Marc H Hedrick Restricted Stock Units D 159,681 $0.00 1,596,806 D M
04 Nov, 2025 Andrew John Hugh Macintyre Sims Common Stock A 20,000 $0.51 68,138 D P
01 Oct, 2025 Andrew John Hugh Macintyre Sims Common Stock A 38,323 $0.00 48,138 D M
13 Aug, 2025 Andrew John Hugh Macintyre Sims Stock Option (Right to Buy) A 1,379,636 $0.00 1,379,636 D A
01 Oct, 2025 Marc H Hedrick Common Stock A 159,681 $0.00 180,106 D M
13 Aug, 2025 Marc H Hedrick Stock Option (Right to Buy) A 5,748,506 $0.00 5,748,506 D A
13 Aug, 2025 Andrew John Hugh Macintyre Sims Restricted Stock Units A 459,878 $0.00 459,878 D A
01 Oct, 2025 Marc H Hedrick Restricted Stock Units D 159,681 $0.00 1,756,487 D M
13 Aug, 2025 Marc H Hedrick Restricted Stock Units A 1,916,168 $0.00 1,916,168 D A
01 Oct, 2025 Andrew John Hugh Macintyre Sims Restricted Stock Units D 38,323 $0.00 421,555 D M
22 Aug, 2025 Robert P Lenk Common Stock A 110,000 $0.49 139,327 D P
13 Aug, 2025 Es-Johansson An Van Stock Option (Right to Buy) A 297,794 $0.00 297,794 D A
13 Aug, 2025 Andrew John Hugh Macintyre Sims Stock Option (Right to Buy) A 1,379,636 $0.00 1,379,636 D A