Vault-13

MARKER THERAPEUTICS INC MRKR

COM NEW · Common Stock · CUSIP 57055L206

35 institutional holders -1 vs Q4 2025
3,902,8733.9m shares reported held*
23.4% of all shares outstanding*
$5.1mreported value*
4 new 6 added 8 reduced 7 sold out net sold ≈ $357.0k (-274.6k shares)

* 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 2026-03-16, 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 ≈ $1.30.

Trends to Q1 2026

Institutional holders

Managers reporting a position, each quarter

02040Q1 23: 28Q2 23: 29Q3 23: 28Q4 23: 26Q1 24: 28Q2 24: 28Q3 24: 28Q4 24: 33Q1 25: 32Q2 25: 32Q3 25: 32Q4 25: 36Q1 26: 3535Q1 23Q4 23Q3 24Q2 25Q1 26
Numbers
QuarterHolders
Q1 202328
Q2 202329
Q3 202328
Q4 202326
Q1 202428
Q2 202428
Q3 202428
Q4 202433
Q1 202532
Q2 202532
Q3 202532
Q4 202536
Q1 202635

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
20020Q2 24: 10 bought or addedQ2 24: 6 cut or sold outQ3 24: 8 bought or addedQ3 24: 7 cut or sold outQ3 24Q4 24: 15 bought or addedQ4 24: 8 cut or sold outQ1 25: 13 bought or addedQ1 25: 9 cut or sold outQ1 25Q2 25: 9 bought or addedQ2 25: 9 cut or sold outQ3 25: 16 bought or addedQ3 25: 10 cut or sold outQ3 25Q4 25: 18 bought or addedQ4 25: 9 cut or sold outQ1 26: 10 bought or addedQ1 26: 15 cut or sold outQ1 26
Numbers
QuarterBought or addedCut or sold out
Q2 2024106
Q3 202487
Q4 2024158
Q1 2025139
Q2 202599
Q3 20251610
Q4 2025189
Q1 20261015

Biggest buyers

RENAISSANCE TECHNOLOGIES LLC Added +51,644+51.6k
SUSQUEHANNA INTERNATIONAL GROUP, LLP New +48,780+48.8k
GEODE CAPITAL MANAGEMENT, LLC Added +30,566+30.6k
TWO SIGMA SECURITIES, LLC New +11,460+11.5k
Ashton Thomas Private Wealth, LLC Added +6,400+6.4k
XTX Topco Ltd Added +5,526+5.5k
Tower Research Capital LLC (TRC) Added +2,423+2.4k
Invst, LLC Added +2,000+2.0k
SIGNATUREFD, LLC New +228+228
Caitong International Asset Management Co., Ltd New +3+3

Biggest sellers

NewEdge Advisors, LLC Sold out -149,000-149.0k
UBS Group AG Reduced -141,657-141.7k
CITADEL ADVISORS LLC Sold out -58,847-58.8k
TWO SIGMA INVESTMENTS, LP Reduced -37,140-37.1k
Boyer Financial Services, Inc. Sold out -36,817-36.8k
JANE STREET GROUP, LLC Reduced -4,215-4.2k
HRT FINANCIAL LP Reduced -2,085-2.1k
OSAIC HOLDINGS, INC. Reduced -1,300-1.3k
BANK OF AMERICA CORP /DE/ Sold out -1,126-1.1k
BlackRock, Inc. Sold out -992-992

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.

HolderStakeChangeShares Last filed
Blue Owl Capital Holdings LP 13G · institution +4.8 pts · filed 2025-05-15 10.0% +4.8 pts 1.1m≈ $1.7m 2025-05-15
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% -2.7 pts 1.7m≈ $2.5m 2025-11-17
Alyeska Investment Group, L.P. 13G · institution -0.1 pts · filed 2025-11-14 9.9% -0.1 pts 1.3m≈ $1.9m 2025-11-14

Insider purchases and sales in Q1 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)

BuyingSelling
101Q2 24: 0 buyingQ2 24: 0 sellingQ3 24: 0 buyingQ3 24: 0 sellingQ3 24Q4 24: 1 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 0 buyingQ1 26: 0 sellingQ1 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q2 20240—0——
Q3 20240—0——
Q4 20241$35.5k0——
Q1 20250—0——
Q2 20250—0——
Q3 20250—0——
Q4 20250—0——
Q1 20260—0——

None reported in Q1 2026.

Holders, Q1 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 NEA Management Company, LLC 0.12% of their portfolio TIMONIUM, MD 1,625,6781.6m $2.1m $2.1m 0.12% Unchanged
2 Blue Owl Capital Holdings LP 0.20% of their portfolio New York, NY 554,250554.2k $720.5k $720.5k 0.20% Unchanged
3 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 389,319389.3k $506.1k $506.1k 0.00% First filing
4 Aisling Capital Management LP 0.09% of their portfolio NEW YORK, NY 325,370325.4k $423.0k $423.0k 0.09% Unchanged
5 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 175,294175.3k $227.9k $227.9k 0.00% Added +51.6k +51,644
6 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 160,910160.9k $209.2k $209.2k 0.00% Added +30.6k +30,566
7 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 93,12193.1k $121.1k $121.1k 0.00% Reduced -1.3k -1,300
8 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 87,26987.3k $113.5k $113.5k 0.00% First filing
9 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 83,04783.0k $108.0k $108.0k 0.00% Reduced -200 -200
10 XTX Topco Ltd 0.00% of their portfolio LONDON, X0 63,56763.6k $82.6k $82.6k 0.00% Added +5.5k +5,526
11 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 61,00161.0k $79.3k $79.3k 0.00% Reduced -37.1k -37,140
12 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 48,78048.8k $63.4k $63.4k 0.00% New
13 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 36,30336.3k $47.2k $47.2k 0.00% Reduced -4.2k -4,215
14 UBS Group AG 0.00% of their portfolio ZURICH, V8 32,36932.4k $42.1k $42.1k 0.00% Reduced -141.7k -141,657
15 Invst, LLC 0.00% of their portfolio INDIANAPOLIS, IN 29,00029.0k $37.7k $37.7k 0.00% Added +2.0k +2,000
16 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 26,00926.0k $33.8k $33.8k 0.00% Unchanged
17 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 20,94820.9k $27.2k $27.2k 0.00% Unchanged
18 Creative Planning 0.00% of their portfolio OVERLAND PARK, KS 17,31217.3k $22.5k $22.5k 0.00% Unchanged
19 Ashton Thomas Private Wealth, LLC 0.00% of their portfolio SCOTTSDALE, AZ 16,40016.4k $21.3k $21.3k 0.00% Added +6.4k +6,400
20 MATRIX ASSET ADVISORS INC/NY 0.00% of their portfolio White Plains, NY 15,00015.0k $19.5k $19.5k 0.00% Unchanged
21 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 11,85211.9k $15.0k $15.0k 0.00% Reduced -2.1k -2,085
22 TWO SIGMA SECURITIES, LLC 0.00% of their portfolio NEW YORK, NY 11,46011.5k $14.9k $14.9k 0.00% New
23 FIFTH THIRD BANCORP 0.00% of their portfolio CINCINNATI, OH 10,00010.0k $13.0k $13.0k 0.00% Unchanged
24 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 3,1373.1k $4.1k $4.1k 0.00% Added +2.4k +2,423
25 Vanguard Global Advisers, LLC 0.00% of their portfolio MALVERN, PA 2,5122.5k $3.3k $3.3k 0.00% First filing
26 INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC 0.00% of their portfolio ORLANDO, FL 2,0002.0k $2.6k $2.6k 0.00% Unchanged
27 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 232232 $302 $302 0.00% Reduced -10 -10
28 SIGNATUREFD, LLC 0.00% of their portfolio ATLANTA, GA 228228 $296 $296 0.00% New
29 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 203203 $264 $264 0.00% Unchanged
30 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 178178 $231 $231 0.00% Unchanged
31 Hilltop National Bank 0.00% of their portfolio CASPER, WY 7373 $95 $95 0.00% Unchanged
32 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 2323 $29 $29 0.00% Unchanged
33 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 2323 $30 $30 0.00% Unchanged
34 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 33 $4 $4 0.00% New
35 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 22 $2 $2 0.00% Reduced -13 -13