Monopar Therapeutics Inc.
Monopar Therapeutics Inc. (MNPR) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MNPR · as of Sep 30, 2025
Ownership Breakdown
55
Institutional Holders
▲ 12 vs Q2
$354.30M
Total Inst. Value
▲ $240.99M vs Q2
6.70M
Shares Outstanding
freeFloat 61.83%
4.34M
13F Shares Held
▲ 1.16M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
MNPR largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
JANUS HENDERSON GROUP PLC pharmaceutical preparations | 1.29M | 18.40% | 18.40% | $105.31B | Nov 14, 2025 | ▲ 115.0K |
ADAGE CAPITAL PARTNERS GP, L.L.C. pharmaceutical preparations | 659.2K | 9.42% | 9.42% | $53.84B | Nov 14, 2025 | ▲ 60.0K |
RA CAPITAL MANAGEMENT, L.P. pharmaceutical preparations | 511.2K | 7.30% | 7.30% | $41.75B | Nov 14, 2025 | — held |
WELLINGTON MANAGEMENT GROUP LLP pharmaceutical preparations | 231.5K | 3.31% | 3.31% | $18.90B | Nov 14, 2025 | NEW |
VANGUARD GROUP INC pharmaceutical preparations | 208.2K | 2.98% | 2.98% | $17.01B | Nov 7, 2025 | ▲ 121.7K |
BLACKROCK, INC. pharmaceutical preparations | 203.8K | 2.91% | 2.91% | $16.64B | Nov 12, 2025 | ▼ 1.4K |
DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) pharmaceutical preparations | 159.8K | 2.28% | 2.28% | $13.05B | Nov 14, 2025 | NEW |
SATURN V CAPITAL MANAGEMENT LLC pharmaceutical preparations | 155.4K | 2.22% | 2.22% | $12.69B | Nov 14, 2025 | NEW |
TCG CROSSOVER MANAGEMENT, LLC pharmaceutical preparations | 153.0K | 2.19% | 2.19% | $12.50B | Nov 17, 2025 | NEW |
ADAR1 CAPITAL MANAGEMENT, LLC pharmaceutical preparations | 130.0K | 1.86% | 1.86% | $10.62B | Nov 14, 2025 | ▲ 29.0K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
19
Increased
+430.4K shares11
New Positions
first time holders14
Decreased
−49.9K shares0
Sold Out
fully exitedNet shares change (top 50)
+380.5K
+430.4K / −49.9K
Net new holders
+16
11 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
MNPR insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
4
Buy transactions
4
Sell transactions
1.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Robinson Chandler Chief Executive Officer | Mar 31, 2026 | Tax Withhold | 1,972 | $54.79 | $108.0K | 90.5K | Form 4 ↗ |
Cittadine Andrew Chief Operating Officer | Mar 31, 2026 | Tax Withhold | 1,571 | $54.79 | $86.1K | 52.7K | Form 4 ↗ |
Rodriguez Susan CCSO | Mar 2, 2026 | Award | 48,728 | $53.47 | $2.61M | 48.7K | Form 4 ↗ |
Robinson Chandler Chief Executive Officer | Jan 28, 2025 | J-Other | 62,815 | — | — | 62.8K | Form 4 ↗ |
Robinson Chandler Chief Executive Officer | Dec 31, 2025 | Tax Withhold | 2,558 | $65.30 | $167.0K | 85.7K | Form 4 ↗ |
Cittadine Andrew Chief Operating Officer | Dec 31, 2025 | Tax Withhold | 1,889 | $65.30 | $123.4K | 50.7K | Form 4 ↗ |
RIOUX PATRICE Acting Chief Medical Officer | Jan 1, 2026 | Award | 2,000 | $65.30 | $130.6K | 2.0K | Form 4 ↗ |
Vu Quan Anh Chief Financial Officer | Dec 26, 2025 | Purchase | 1,500 | $69.95 | $104.9K | 1.5K | Form 4 ↗ |
KLAUSNER ARTHUR J director | Dec 18, 2025 | Sale | 4,660 | $67.06 | $312.5K | 9.2K | Form 4 ↗ |
KLAUSNER ARTHUR J director | Dec 18, 2025 | Sale | 461 | $68.09 | $31.4K | 8.8K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Monopar Therapeutics Inc. (MNPR) is primarily owned by institutional investors, who hold approximately 64.7% of total shares outstanding. Company insiders own approximately 38.17%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Monopar Therapeutics Inc. is JANUS HENDERSON GROUP PLC, holding approximately 1.29 million shares — equal to 18.40% of outstanding shares — as of September 30, 2025.
A total of 55 institutional investors currently hold MNPR stock, with a combined institutional value of approximately $354,298,233 as of the most recent 13F filing period.
Frequently asked questions
MNPR ownershipMonopar Therapeutics Inc. (MNPR) is primarily owned by institutional investors, who hold approximately 64.7% of shares. The largest shareholder is JANUS HENDERSON GROUP PLC with a 18.40% stake. Company insiders hold 38.17%. Data sourced from SEC Form 13F as of September 30, 2025.