Vault-13

MONOPAR THERAPEUTICS INC MNPR

COM NEW · Common Stock · CUSIP 61023L207

Biopharmaceutical company

82 institutional holders +8 vs Q4 2025
6,235,9856.2m shares reported held*
$341.5mreported value*
16 new 33 added 18 reduced 11 sold out net bought ≈ $38.8m (+708.3k 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. Implied quarter-end price ≈ $54.77.

Trends to Q1 2026

Institutional holders

Managers reporting a position, each quarter

050100Q3 24: 7Q4 24: 19Q1 25: 36Q2 25: 44Q3 25: 56Q4 25: 74Q1 26: 8282Q3 24Q1 25Q3 25Q1 26
Numbers
QuarterHolders
Q3 20247
Q4 202419
Q1 202536
Q2 202544
Q3 202556
Q4 202574
Q1 202682

Buyers vs sellers

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

Bought or addedCut or sold out
1000100Q4 24: 14 bought or addedQ4 24: 1 cut or sold outQ4 24Q1 25: 24 bought or addedQ1 25: 6 cut or sold outQ1 25Q2 25: 34 bought or addedQ2 25: 15 cut or sold outQ2 25Q3 25: 35 bought or addedQ3 25: 17 cut or sold outQ3 25Q4 25: 54 bought or addedQ4 25: 15 cut or sold outQ4 25Q1 26: 49 bought or addedQ1 26: 29 cut or sold outQ1 26
Numbers
QuarterBought or addedCut or sold out
Q4 2024141
Q1 2025246
Q2 20253415
Q3 20253517
Q4 20255415
Q1 20264929

Biggest buyers

Sio Capital Management, LLC New +173,506+173.5k
DEERFIELD MANAGEMENT COMPANY, L.P. Added +153,187+153.2k
Polar Capital Holdings Plc Added +120,776+120.8k
Balyasny Asset Management L.P. Added +104,536+104.5k
Vestal Point Capital, LP New +65,418+65.4k
Walleye Capital LLC New +63,119+63.1k
BlackRock, Inc. Added +61,710+61.7k
Alyeska Investment Group, L.P. Added +60,000+60.0k
Siren, L.L.C. Added +57,820+57.8k
CITADEL ADVISORS LLC Added +53,363+53.4k

Biggest sellers

ADAGE CAPITAL PARTNERS GP, L.L.C. Reduced -330,272-330.3k
Deep Track Capital, LP Sold out -95,408-95.4k
WELLINGTON MANAGEMENT GROUP LLP Reduced -51,726-51.7k
MILLENNIUM MANAGEMENT LLC Reduced -23,723-23.7k
CITIGROUP INC Reduced -13,608-13.6k
RENAISSANCE TECHNOLOGIES LLC Sold out -11,431-11.4k
Virtu Financial LLC Sold out -10,009-10.0k
TCG Crossover Management, LLC Reduced -9,812-9.8k
MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC Sold out -6,100-6.1k
STATE OF WISCONSIN INVESTMENT BOARD Sold out -5,757-5.8k

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
JANUS HENDERSON GROUP PLC 13G · institution +0.3 pts · filed 2025-11-14 19.5% +0.3 pts 1.3m≈ $119.2m 2025-11-14
Monopar Therapeutics 13D · may seek influence filed 2025-02-07 13.4% 704.8k≈ $65.3m 2025-02-07
RA CAPITAL MANAGEMENT, L.P. 13G · passive investor no change · filed 2026-02-17 9.9% no change 667.6k≈ $61.8m 2026-02-17
ASTRAZENECA PLC 13G · passive investor filed 2026-02-06 7.8% 522.7k≈ $48.4m 2026-02-06
BlackRock, Inc. 13G · institution new · filed 2026-10-27 5.0% new 338.1k≈ $31.3m 2026-10-27

Fell to 5% or below in the last year: Adage Capital Management, L.P. (4.8%, 2026-08-12), Saturn V Capital Management LP (4.7%, 2026-08-12), Tactic Pharma LLC (4.5%, 2026-01-30)

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
404Q2 24: 1 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: 1 sellingQ3 25: 0 buyingQ3 25: 4 sellingQ3 25Q4 25: 1 buyingQ4 25: 1 sellingQ1 26: 0 buyingQ1 26: 0 sellingQ1 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q2 20241—0——
Q3 20240—0——
Q4 20241$25.2k0——
Q1 20250—0——
Q2 20250—1$1.2m—
Q3 20250—4$36.0m—
Q4 20251$104.9k1$343.9k—
Q1 20260—0——

None reported in Q1 2026.

Holders, Q1 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 JANUS HENDERSON GROUP PLC 0.03% of their portfolio LONDON, X0 1,317,4101.3m $72.1m $72.1m 0.03% Unchanged
2 RA CAPITAL MANAGEMENT, L.P. 0.39% of their portfolio BOSTON, MA 667,207667.2k $36.6m $36.6m 0.39% Unchanged
3 Saturn V Capital Management LP 3.43% of their portfolio AUSTIN, TX 345,626345.6k $18.9m $18.9m 3.43% Added +19.9k +19,925
4 DEERFIELD MANAGEMENT COMPANY, L.P. 0.21% of their portfolio New York, NY 323,745323.7k $17.7m $17.7m 0.21% Added +153.2k +153,187
5 BlackRock, Inc. 0.00% of their portfolio New York, NY 316,567316.6k $17.3m $17.3m 0.00% Added +61.7k +61,710
6 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.03% of their portfolio Boston, MA 309,195309.2k $16.9m $16.9m 0.03% Reduced -330.3k -330,272
7 Siren, L.L.C. 0.41% of their portfolio New York, NY 270,118270.1k $14.8m $14.8m 0.41% Added +57.8k +57,820
8 ADAR1 Capital Management, LLC 0.87% of their portfolio AUSTIN, TX 264,278264.3k $14.5m $14.5m 0.87% Added +30.4k +30,370
9 Polar Capital Holdings Plc 0.05% of their portfolio London, X0 226,526226.5k $12.4m $12.4m 0.05% Added +120.8k +120,776
10 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 218,463218.5k $12.0m $12.0m 0.00% First filing
11 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 174,342174.3k $9.6m $9.6m 0.00% Reduced -51.7k -51,726
12 Sio Capital Management, LLC 1.37% of their portfolio NEW YORK, NY 173,506173.5k $9.5m $9.5m 1.37% New
13 Balyasny Asset Management L.P. 0.01% of their portfolio Chicago, IL 136,443136.4k $7.5m $7.5m 0.01% Added +104.5k +104,536
14 TCG Crossover Management, LLC 0.21% of their portfolio PALO ALTO, CA 132,103132.1k $7.2m $7.2m 0.21% Reduced -9.8k -9,812
15 Alyeska Investment Group, L.P. 0.02% of their portfolio CHICAGO, IL 100,000100.0k $5.5m $5.5m 0.02% Added +60.0k +60,000
16 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 99,91899.9k $5.5m $5.5m 0.00% Added +911 +911
17 Vivo Capital, LLC 0.41% of their portfolio Palo Alto, CA 90,50090.5k $5.0m $5.0m 0.41% Unchanged
18 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 88,35588.4k $4.8m $4.8m 0.00% Added +4.4k +4,366
19 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 78,61878.6k $4.3m $4.3m 0.00% Added +13.8k +13,761
20 Vestal Point Capital, LP 0.10% of their portfolio NEW YORK, NY 65,41865.4k $3.6m $3.6m 0.10% New
21 Walleye Capital LLC 0.02% of their portfolio NEW YORK, NY 63,11963.1k $3.5m $3.5m 0.02% New
22 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 59,69959.7k $3.3m $3.3m 0.00% Added +53.3k +53,336
23 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 58,43658.4k $3.2m $3.2m 0.00% Added +53.4k +53,363
24 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 52,95153.0k $2.9m $2.9m 0.00% Reduced -23.7k -23,723
25 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 47,70247.7k $2.6m $2.6m 0.00% Added +25.0k +24,975
26 VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 45,98746.0k $2.5m $2.5m 0.00% First filing
27 SILVERARC CAPITAL MANAGEMENT, LLC 0.28% of their portfolio BOSTON, MA 43,48843.5k $2.4m $2.4m 0.28% New
28 NEUBERGER BERMAN GROUP LLC 0.00% of their portfolio NEW YORK, NY 42,43442.4k $2.3m $2.3m 0.00% Added +9.9k +9,887
29 UBS Group AG 0.00% of their portfolio ZURICH, V8 39,43639.4k $2.2m $2.2m 0.00% Added +35.2k +35,186
30 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 34,71034.7k $1.9m $1.9m 0.00% Added +24.3k +24,349
31 Driehaus Capital Management LLC 0.01% of their portfolio Chicago, IL 33,15633.2k $1.8m $1.8m 0.01% Reduced -559 -559
32 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 31,86231.9k $1.7m $1.7m 0.00% Added +1.4k +1,374
33 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 28,82228.8k $1.6m $1.6m 0.00% Added +25.4k +25,449
34 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 28,44728.4k $1.6m $1.6m 0.00% First filing
35 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 24,93524.9k $1.4m $1.4m 0.00% Added +4.7k +4,690
36 Jump Financial, LLC 0.02% of their portfolio Chicago, IL 22,80822.8k $1.2m $1.2m 0.02% New
37 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 22,31222.3k $1.2m $1.2m 0.00% Reduced -4.7k -4,655
38 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 21,75421.8k $1.2m $1.2m 0.00% Added +11.2k +11,233
39 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 14,24914.2k $780.7k $780.7k 0.00% Added +13.9k +13,908
40 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 12,55812.6k $688.1k $688.1k 0.00% Reduced -1.7k -1,727
41 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 9,7659.8k $535.0k $535.0k 0.00% Added +4.8k +4,776
42 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 7,5827.6k $415.4k $415.4k 0.00% Added +656 +656
43 WINTON GROUP Ltd 0.01% of their portfolio LONDON, X0 6,8296.8k $374.2k $374.2k 0.01% New
44 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 6,8196.8k $373.6k $373.6k 0.00% New
45 Informed Momentum Co LLC 0.04% of their portfolio SOLANA BEACH, CA 6,2256.2k $341.1k $341.1k 0.04% Reduced -5.1k -5,148
46 Creative Planning 0.00% of their portfolio OVERLAND PARK, KS 5,9876.0k $328.0k $328.0k 0.00% New
47 TD Asset Management Inc 0.00% of their portfolio Toronto, A6 5,8845.9k $322.4k $322.4k 0.00% Added +2.8k +2,800
48 GERBER, LLC 0.17% of their portfolio COLUMBUS, OH 5,6015.6k $306.9k $306.9k 0.17% Unchanged
49 Nuveen, LLC 0.00% of their portfolio CHARLOTTE, NC 5,5515.6k $304.1k $304.1k 0.00% Unchanged
50 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 4,9464.9k $271.0k $271.0k 0.00% Reduced -44 -44
51 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 4,5724.6k $250.5k $250.5k 0.00% New
52 Engineers Gate Manager LP 0.00% of their portfolio NEW YORK, NY 4,4344.4k $242.9k $242.9k 0.00% Added +96 +96
53 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 4,1374.1k $226.7k $226.7k 0.00% New
54 Quadrature Capital Ltd 0.00% of their portfolio LONDON, X0 3,6733.7k $201.2k $201.2k 0.00% New
55 Virtus Investment Advisers, LLC 0.06% of their portfolio HARTFORD, CT 3,6553.7k $200.3k $200.3k 0.06% Added +90 +90
56 Your Advocates Ltd., LLP 0.06% of their portfolio HOUSTON, TX 3,3443.3k $183.2k $183.2k 0.06% New
57 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 2,5382.5k $139.1k $139.1k 0.00% Unchanged
58 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 2,4222.4k $129.1k $129.1k 0.00% Added +313 +313
59 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 2,0562.1k $112.6k $112.6k 0.00% Reduced -34 -34
60 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 1,7281.7k $94.7k $94.7k 0.00% Reduced -3.4k -3,397
61 DIADEMA PARTNERS LP 0.04% of their portfolio MORRISTOWN, NJ 1,6301.6k $89.3k $89.3k 0.04% New
62 Vanguard Global Advisers, LLC 0.00% of their portfolio MALVERN, PA 1,5531.6k $85.1k $85.1k 0.00% First filing
63 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 1,2001.2k $65.7k $65.7k 0.00% Unchanged
64 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 979979 $53.6k $53.6k 0.00% Reduced -36 -36
65 Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio TRENTON, NJ 964964 $52.8k $52.8k 0.00% Unchanged
66 Persistent Asset Partners Ltd 0.02% of their portfolio HONG KONG, K3 783783 $42.9k $42.9k 0.02% New
67 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 761761 $41.7k $41.7k 0.00% Added +414 +414
68 MEEDER ASSET MANAGEMENT INC 0.00% of their portfolio DUBLIN, OH 637637 $34.9k $34.9k 0.00% Reduced -357 -357
69 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 600600 $32.9k $32.9k 0.00% Unchanged
70 FMR LLC 0.00% of their portfolio BOSTON, MA 409409 $22.4k $22.4k 0.00% Added +51 +51
71 Legal & General Group Plc 0.00% of their portfolio London, X0 408408 $22.4k $22.4k 0.00% Reduced -71 -71
72 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 300300 $16.4k $16.4k 0.00% Unchanged
73 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 247247 $13.5k $13.5k 0.00% Reduced -34 -34
74 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 232232 $12.7k $12.7k 0.00% Reduced -13.6k -13,608
75 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 111111 $6.1k $6.1k 0.00% Added +11 +11
76 US BANCORP \DE\ 0.00% of their portfolio MINNEAPOLIS, MN 7272 $3.9k $3.9k 0.00% New
77 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 4949 $2.0k $2.0k 0.00% Reduced -277 -277
78 Sterling Capital Management LLC 0.00% of their portfolio CHARLOTTE, NC 2929 $1.6k $1.6k 0.00% Unchanged
79 GAMMA Investing LLC 0.00% of their portfolio FOSTER CITY, CA 2929 $1.6k $1.6k 0.00% Added +15 +15
80 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 2525 $1.4k $1.4k 0.00% Reduced -2.9k -2,854
81 CWM, LLC 0.00% of their portfolio OMAHA, NE 1515 $822 $822 0.00% Added +10 +10
82 Kilter Group LLC 0.00% of their portfolio RHINEBECK, NY 11 $55 $55 0.00% New