MARKER THERAPEUTICS INC MRKR
COM NEW · Common Stock · CUSIP 57055L206
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersHouston, TX
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 16.7m as of 2026-08-07, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $1.47.
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q1 2023 | 28 |
| Q2 2023 | 29 |
| Q3 2023 | 28 |
| Q4 2023 | 26 |
| Q1 2024 | 28 |
| Q2 2024 | 28 |
| Q3 2024 | 28 |
| Q4 2024 | 33 |
| Q1 2025 | 32 |
| Q2 2025 | 32 |
| Q3 2025 | 32 |
| Q4 2025 | 36 |
| Q1 2026 | 35 |
| Q2 2026 | 35 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 8 | 7 |
| Q4 2024 | 15 | 8 |
| Q1 2025 | 13 | 9 |
| Q2 2025 | 9 | 9 |
| Q3 2025 | 16 | 10 |
| Q4 2025 | 18 | 9 |
| Q1 2026 | 10 | 15 |
| Q2 2026 | 10 | 11 |
Biggest buyers
| RENAISSANCE TECHNOLOGIES LLC | Added | +74.1k |
| Concurrent Investment Advisors, LLC | New | +68.0k |
| VANGUARD CAPITAL MANAGEMENT LLC | Added | +36.9k |
| CITADEL ADVISORS LLC | New | +32.5k |
| OSAIC HOLDINGS, INC. | Added | +19.5k |
| Virtu Financial LLC | New | +11.6k |
| NORTHERN TRUST CORP | Added | +8.6k |
| LPL Financial LLC | Added | +100 |
| BARCLAYS PLC | New | +63 |
| Caitong International Asset Management Co., Ltd | Added | +6 |
Biggest sellers
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Sold out | -48.8k |
| UBS Group AG | Reduced | -24.2k |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | -21.1k |
| JANE STREET GROUP, LLC | Reduced | -19.5k |
| XTX Topco Ltd | Reduced | -18.2k |
| MATRIX ASSET ADVISORS INC/NY | Sold out | -15.0k |
| HRT FINANCIAL LP | Sold out | -11.9k |
| TWO SIGMA SECURITIES, LLC | Sold out | -11.5k |
| Invst, LLC | Reduced | -11.0k |
| Tower Research Capital LLC (TRC) | Reduced | -2.3k |
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| Blue Owl Capital Holdings LP 13G · institution +4.8 pts · filed 2025-05-15 | 10.0% |
New Enterprise Associates 16, L.P.
13D · may seek influence
-2.7 pts · filed 2025-11-17
Stated purposeNEA 16 acquired the NEA 16 Shares for investment purposes. Depending on market conditions, its continuing evaluation of the business and prospects of the Issuer and other factors, NEA 16 and the other Reporting Persons may dispose of or acquire additional shares of the Issuer, including shares that may be acquired upon exercise of the Warrants prior to expiration. Except as set forth above, none of the Reporting Persons has any present plans which relate to or would result in: (a) The acquisition by any person of additional securities of the Issuer, or the disposition of securities of the Issuer; (b) An extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Issuer or any of its subsidiaries; (c) A sale or transfer of a material amount of asse… Full filing |
9.9% |
| Alyeska Investment Group, L.P. 13G · institution -0.1 pts · filed 2025-11-14 | 9.9% |
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 1 | $35.5k | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| NEA Management Company, LLC 0.15% of their portfolio | 1.6m $2.4m | Unchanged |
| Blue Owl Capital Holdings LP 0.12% of their portfolio | 554.2k $814.7k | Unchanged |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 426.2k $626.5k | Added +36.9k |
| Aisling Capital Management LP 0.10% of their portfolio | 325.4k $478.3k | Unchanged |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 249.4k $366.7k | Added +74.1k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 139.8k $205.6k | Reduced -21.1k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 112.6k $165.6k | Added +19.5k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 87.3k $128.3k | Unchanged |
| LPL Financial LLC 0.00% of their portfolio | 83.1k $122.2k | Added +100 |
| Concurrent Investment Advisors, LLC 0.00% of their portfolio | 68.0k $99.9k | New |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 60.2k $88.5k | Reduced -800 |
| XTX Topco Ltd 0.00% of their portfolio | 45.4k $66.7k | Reduced -18.2k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 34.6k $50.9k | Added +8.6k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 32.5k $47.8k | New |
| STATE STREET CORP 0.00% of their portfolio | 20.9k $30.8k | Unchanged |
| Invst, LLC 0.00% of their portfolio | 18.0k $26.5k | Reduced -11.0k |
| Creative Planning 0.00% of their portfolio | 17.3k $25.4k | Unchanged |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 16.8k $24.7k | Reduced -19.5k |
| Ashton Thomas Private Wealth, LLC 0.00% of their portfolio | 16.4k $24.1k | Unchanged |
| Virtu Financial LLC 0.00% of their portfolio | 11.6k $17.0k | New |
| FIFTH THIRD BANCORP 0.00% of their portfolio | 10.0k $14.7k | Unchanged |
| UBS Group AG 0.00% of their portfolio | 8.2k $12.0k | Reduced -24.2k |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 2.5k $3.7k | Unchanged |
| INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC 0.00% of their portfolio | 2.0k $2.9k | Unchanged |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 810 $1.2k | Reduced -2.3k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 232 $341 | Unchanged |
| SIGNATUREFD, LLC 0.00% of their portfolio | 228 $335 | Unchanged |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 203 $298 | Unchanged |
| GROUP ONE TRADING LLC 0.00% of their portfolio | 178 $262 | Unchanged |
| Hilltop National Bank 0.00% of their portfolio | 73 $107 | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 63 $93 | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 23 $34 | Unchanged |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 23 $34 | Unchanged |
| Caitong International Asset Management Co., Ltd 0.00% of their portfolio | 9 $13 | Added +6 |
| MORGAN STANLEY 0.00% of their portfolio | 2 $2 | Unchanged |