Chemomab Therapeutics Ltd.
Chemomab Therapeutics Ltd. (CMMB) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · CMMB · as of Sep 30, 2025
Ownership Breakdown
10
Institutional Holders
▼ 4 vs Q2
$1.03M
Total Inst. Value
▼ $3.88M vs Q2
6.16M
Shares Outstanding
freeFloat 90.02%
390,310
13F Shares Held
▼ 3.84M 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
CMMB largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
SPHERA FUNDS MANAGEMENT LTD. pharmaceutical preparations | 179.4K | 2.90% | 2.90% | $471.89M | Nov 14, 2025 | NEW |
MORGAN STANLEY pharmaceutical preparations | 90.1K | 1.46% | 1.46% | $236.87M | May 27, 2026 | NEW |
IKARIAN CAPITAL, LLC pharmaceutical preparations | 53.3K | 86.20% | 86.20% | $140.08M | Nov 14, 2025 | NEW |
STONEPINE CAPITAL MANAGEMENT, LLC pharmaceutical preparations | 30.0K | 48.55% | 48.55% | $78.90M | Nov 13, 2025 | NEW |
JANE STREET GROUP, LLC pharmaceutical preparations | 21.5K | 34.81% | 34.81% | $56.57M | Nov 14, 2025 | NEW |
RHUMBLINE ADVISERS pharmaceutical preparations | 9.5K | 15.38% | 15.38% | $25.00M | Nov 6, 2025 | NEW |
BNP PARIBAS ARBITRAGE, SNC pharmaceutical preparations | 5.8K | 9.31% | 9.31% | $15.12M | Nov 13, 2025 | NEW |
GAMMA INVESTING LLC pharmaceutical preparations | 667 | 1.08% | 1.08% | $1.75M | Oct 2, 2025 | NEW |
UBS GROUP AG pharmaceutical preparations | 99 | 0.16% | 0.16% | $260,000 | Nov 13, 2025 | NEW |
SBI SECURITIES CO., LTD. pharmaceutical preparations | 26 | 0.04% | 0.04% | $68,000 | Nov 5, 2025 | NEW |
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
0
Increased
+0 shares10
New Positions
first time holders0
Decreased
−0 shares14
Sold Out
fully exitedNet shares change (top 50)
+0
+0 / −0
Net new holders
-4
10 new / 14 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
CMMB 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.
0
Buy transactions
0
Sell transactions
0.00
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 |
|---|---|---|---|---|---|---|---|
Mor George Adi Chief Executive Officer | May 29, 2026 | Purchase | 4,926 | $2.08 | $10.2K | 139.1K | Form 4 ↗ |
Mor George Adi Chief Executive Officer | May 29, 2026 | Purchase | 4,878 | $2.05 | $10.0K | 134.2K | Form 4 ↗ |
Mor George Adi Chief Executive Officer | May 29, 2026 | J-Other | 31,712 | — | — | 31.7K | Form 4 ↗ |
Mor George Adi Chief Executive Officer | May 29, 2026 | J-Other | 18,750 | — | — | 18.8K | 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
Chemomab Therapeutics Ltd. (CMMB) is primarily owned by institutional investors, who hold approximately 6.3% of total shares outstanding. Company insiders own approximately 9.98%, while retail and public investors account for the remaining 83.68%.
The largest institutional shareholder of Chemomab Therapeutics Ltd. is SPHERA FUNDS MANAGEMENT LTD., holding approximately 179,425 shares — equal to 2.90% of outstanding shares — as of September 30, 2025.
A total of 10 institutional investors currently hold CMMB stock, with a combined institutional value of approximately $1,026,521 as of the most recent 13F filing period.
Frequently asked questions
CMMB ownershipChemomab Therapeutics Ltd. (CMMB) is primarily owned by institutional investors, who hold approximately 6.3% of shares. The largest shareholder is SPHERA FUNDS MANAGEMENT LTD. with a 2.90% stake. Company insiders hold 9.98%. Data sourced from SEC Form 13F as of September 30, 2025.