Comparable stake leader
HIGHBRIDGE CAPITAL MANAGEMENT LLC
SEC ownership of PLUS THERAPEUTICS, INC.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001095981.
Disclosed value leader
HIGHBRIDGE CAPITAL MANAGEMENT LLC
Comparable rows
26/38
Latest evidence
14 May 2026
- Public ticker
- PSTV on Nasdaq
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
HIGHBRIDGE CAPITAL MANAGEMENT LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
26 of 38
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
HIGHBRIDGE CAPITAL MANAGEMENT LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
14 May 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001095981
- Issuer location
- Austin, TX
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of PLUS THERAPEUTICS, INC. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
HIGHBRIDGE CAPITAL MANAGE...
Disclosed value leader
HIGHBRIDGE CAPITAL MANAGE...
Comparable rows
26/38
Latest evidence
14 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 7.1%
12 rows are not safely comparable across share classes.
13D/G row: HIGHBRIDGE CAPITAL MANAGEMENT LLC
Showing 1-8 of 38 holder rows.
Quick read
HIGHBRIDGE CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 7.1%.
26 of 38 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens HIGHBRIDGE CAPITAL MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
HIGHBRIDGE CAPITAL MANAGEMENT LLC
7.1%
CVI Investments, Inc.
4.9%
Orin Hirschman
3.9%
S.H.N. Financial Investments Ltd.
1.5%
VANGUARD CAPITAL MANAGEMENT LLC
1.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 38 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| HIGHBRIDGE CAPITAL MANAGEMENT LLC |
13D/G
|
7.1%
|
$2,105,263
13,157,894 shares
|
$0 | 31 Mar 2026 |
| CVI Investments, Inc. |
13D/G
|
4.9%
|
$1,441,596
9,009,978 shares
|
-$537,351 | 31 Mar 2026 |
| Orin Hirschman |
13D/G
|
3.9%
|
$410,778
1,283,681 shares
|
+$231,288 | 30 Jun 2025 |
| S.H.N. Financial Investments Ltd. |
13D/G
|
1.5%
|
$525,000
1,500,000 shares
|
+$101,586 | 14 Aug 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
1.3%
|
$395,617
2,427,098 shares
|
— | 31 Mar 2026 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
1.1%
|
$327,979
2,016,314 shares
|
— | 31 Mar 2026 |
| BlackRock, Inc. |
13F
Company
|
0.97%
|
$288,838
1,776,372 shares
|
— | 31 Mar 2026 |
| VANGUARD FIDUCIARY TRUST CO |
13F
Company
|
0.63%
|
$189,695
1,163,776 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$63,979.
Buys
$63,979
Insiders: 2
Sells
$0
Insiders: 0
Net
+$63,979
Shares: +130,000
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 130,000
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 20,000 | 0 | $10,200 | $0 | +$10,200 |
| 9-12 | 110,000 | 0 | $53,779 | $0 | +$53,779 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-11 of 11 reporting-owner rows connected to PLUS THERAPEUTICS, INC.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
11
Largest Forms 3/4/5 holder
Marc H. Hedrick
Net 12M change
+$63,979
Latest report
14 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Marc H. Hedrick | Chief Executive Officer, Director | $359,173 | Mixed | 14 May 2026 | ||
| Andrew John Hugh MacIntyre Sims | Chief Financial Officer | $89,095 | +$10,200 | +13% | Mixed | 14 May 2026 |
| Robert P. Lenk | Director | $68,116 | +$53,779 | +375% | Filing P/S | 22 Aug 2025 |
| Greg Petersen | Director | $66,043 | Filing P/S | 18 Feb 2025 | ||
| Howard Clowes | Director | $35,405 | Filing P/S | 14 May 2026 | ||
| Richard J. Hawkins | Director | $22,767 | Filing P/S | 14 May 2026 | ||
| Kyle Guse | Director | $0 | Mixed | 14 May 2026 | ||
| Ronald Asbury Andrews | Director | $0 | Mixed | 14 May 2026 | ||
| Eric Joseph Daniels | Chief Development Officer | $0 | Mixed | 20 Apr 2026 | ||
| An van Es-Johansson | Director | Mixed | 14 May 2026 | |||
| Norman D. LaFrance | Chief Medical Officer | Mixed | 22 Feb 2024 |
Recent insider transactions for PLUS THERAPEUTICS, INC.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| An van Es-Johansson | PSTV | Stock Option (Right to Buy) | Award | 3,686 | 3,686 | 14 May 2026 | Direct | |||
| An van Es-Johansson | PSTV | Restricted Stock Units | Award | 3,686 | 3,686 | 14 May 2026 | Direct | |||
| Richard J. Hawkins | PSTV | Stock Option (Right to Buy) | Award | 3,686 | 3,686 | 14 May 2026 | Direct | |||
| Richard J. Hawkins | PSTV | Restricted Stock Units | Award | 3,686 | 3,686 | 14 May 2026 | Direct | |||
| Kyle Guse | PSTV | Stock Option (Right to Buy) | Award | 3,686 | 3,686 | 14 May 2026 | Direct | |||
| Kyle Guse | PSTV | Restricted Stock Units | Award | 3,686 | 3,686 | 14 May 2026 | Direct | |||
| Howard Clowes | PSTV | Stock Option (Right to Buy) | Award | 3,686 | 3,686 | 14 May 2026 | Direct | |||
| Howard Clowes | PSTV | Restricted Stock Units | Award | 3,686 | 3,686 | 14 May 2026 | Direct | |||
| Ronald Asbury Andrews | PSTV | Stock Option (Right to Buy) | Award | 5,286 | 3,686 | 14 May 2026 | Direct | |||
| Ronald Asbury Andrews | PSTV | Restricted Stock Units | Award | 3,686 | 3,686 | 14 May 2026 | Direct | |||
| Andrew John Hugh MacIntyre Sims | PSTV | Stock Option (Right to Buy) | Award | 3,443 | 3,443 | 14 May 2026 | Direct | |||
| Andrew John Hugh MacIntyre Sims | PSTV | Restricted Stock Units | Award | 12.9% | 3,443 | 30,055 | 14 May 2026 | Direct | ||
| Marc H. Hedrick | PSTV | Stock Option (Right to Buy) | Award | 23,834 | 23,834 | 14 May 2026 | Direct | |||
| Marc H. Hedrick | PSTV | Restricted Stock Units | Award | 16.3% | 23,834 | 170,037 | 14 May 2026 | Direct | ||
| Eric Joseph Daniels | PSTV | Stock Option (Right to Buy) | Award | 20,000 | 20,000 | 20 Apr 2026 | Direct | |||
| Eric Joseph Daniels | PSTV | Restricted Stock Units | Award | 20,000 | 20,000 | 20 Apr 2026 | Direct | |||
| Andrew John Hugh MacIntyre Sims | PSTV | Common Stock | Options Exercise | 63.4% | 67,452 | 173,913 | 01 Apr 2026 | Direct | ||
| Andrew John Hugh MacIntyre Sims | PSTV | Restricted Stock Units | Options Exercise | -9.21% | -67,452 | 665,322 | 01 Apr 2026 | Direct | ||
| Marc H. Hedrick | PSTV | Common Stock | Options Exercise | -22.3% | -201,632 | 701,100 | 01 Apr 2026 | Direct | ||
| Marc H. Hedrick | PSTV | Common Stock | Options Exercise | 47% | 159,681 | 499,468 | 01 Apr 2026 | Direct | ||
| Marc H. Hedrick | PSTV | Restricted Stock Units | Options Exercise | -9% | -361,313 | 3,655,075 | 01 Apr 2026 | Direct | ||
| Andrew John Hugh MacIntyre Sims | PSTV | Stock Option (Right to Buy) | Award | 349,541 | 349,541 | 25 Feb 2026 | Direct | |||
| Andrew John Hugh MacIntyre Sims | PSTV | Restricted Stock Units | Award | 91.2% | 349,542 | 732,774 | 25 Feb 2026 | Direct | ||
| Marc H. Hedrick | PSTV | Stock Option (Right to Buy) | Award | 2,419,582 | 2,419,582 | 25 Feb 2026 | Direct | |||
| Marc H. Hedrick | PSTV | Restricted Stock Units | Award | 151.5% | 2,419,582 | 4,016,388 | 25 Feb 2026 | Direct | ||
| Marc H. Hedrick | PSTV | Common Stock | Options Exercise | 88.7% | 159,681 | 339,787 | 01 Jan 2026 | Direct | ||
| Marc H. Hedrick | PSTV | Restricted Stock Units | Options Exercise | -9.09% | -159,681 | 1,596,806 | 01 Jan 2026 | Direct | ||
| Andrew John Hugh MacIntyre Sims | PSTV | Common Stock | Options Exercise | 56.2% | 38,323 | 106,461 | 01 Jan 2026 | Direct | ||
| Andrew John Hugh MacIntyre Sims | PSTV | Restricted Stock Units | Options Exercise | -9.09% | -38,323 | 383,232 | 01 Jan 2026 | Direct | ||
| Andrew John Hugh MacIntyre Sims | PSTV | Common Stock | Purchase | 41.6% | $10,200 | $0.5100 | 20,000 | 68,138 | 04 Nov 2025 | Direct |
| Marc H. Hedrick | PSTV | Common Stock | Options Exercise | 781.8% | 159,681 | 180,106 | 01 Oct 2025 | Direct | ||
| Marc H. Hedrick | PSTV | Restricted Stock Units | Options Exercise | -8.33% | -159,681 | 1,756,487 | 01 Oct 2025 | Direct | ||
| Andrew John Hugh MacIntyre Sims | PSTV | Common Stock | Options Exercise | 390.4% | 38,323 | 48,138 | 01 Oct 2025 | Direct | ||
| Andrew John Hugh MacIntyre Sims | PSTV | Restricted Stock Units | Options Exercise | -8.33% | -38,323 | 421,555 | 01 Oct 2025 | Direct | ||
| Robert P. Lenk | PSTV | Common Stock | Purchase | 375.1% | $53,779 | $0.4889 | 110,000 | 139,327 | 22 Aug 2025 | Direct |
| Marc H. Hedrick | PSTV | Restricted Stock Units | Award | 1,916,168 | 1,916,168 | 13 Aug 2025 | Direct | |||
| Marc H. Hedrick | PSTV | Stock Option (Right to Buy) | Award | 5,748,506 | 5,748,506 | 13 Aug 2025 | Direct | |||
| Andrew John Hugh MacIntyre Sims | PSTV | Restricted Stock Units | Award | 459,878 | 459,878 | 13 Aug 2025 | Direct | |||
| Andrew John Hugh MacIntyre Sims | PSTV | Stock Option (Right to Buy) | Award | 1,379,636 | 1,379,636 | 13 Aug 2025 | Direct | |||
| Kyle Guse | PSTV | Stock Option (Right to Buy) | Award | 337,794 | 297,794 | 13 Aug 2025 | Direct | |||
| Richard J. Hawkins | PSTV | Stock Option (Right to Buy) | Award | 397,794 | 397,794 | 13 Aug 2025 | Direct | |||
| Howard Clowes | PSTV | Stock Option (Right to Buy) | Award | 297,794 | 297,794 | 13 Aug 2025 | Direct | |||
| Robert P. Lenk | PSTV | Stock Option (Right to Buy) | Award | 297,794 | 297,794 | 13 Aug 2025 | Direct | |||
| An van Es-Johansson | PSTV | Stock Option (Right to Buy) | Award | 297,794 | 297,794 | 13 Aug 2025 | Direct |
* marks a reported price that did not pass the local price check.