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Chemomab Therapeutics (CMMB) director discloses ADS holdings and vested options

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
3

Rhea-AI Filing Summary

Chemomab Therapeutics Ltd. director Neil Harris Cohen filed a Form 3 disclosing his initial beneficial ownership in the company’s American Depositary Shares. He directly holds 35,304 American Depositary Shares as of the reporting date.

He also holds several stock options to buy additional American Depositary Shares at exercise prices ranging from $2.14 to $109.04 per share, with expirations between 2030 and 2036. Footnotes state these options were granted between July 16, 2020 and March 16, 2025 and are all fully vested and exercisable as of the report date, showing his existing equity-based compensation position rather than new market transactions.

Positive

  • None.

Negative

  • None.
Insider Cohen Neil Harris
Role Director
Type Security Shares Price Value
holding Stock option (right to buy American Depositary Shares) -- -- --
holding Stock option (right to buy American Depositary Shares) -- -- --
holding Stock option (right to buy American Depositary Shares) -- -- --
holding Stock option (right to buy American Depositary Shares) -- -- --
holding Stock option (right to buy American Depositary Shares) -- -- --
holding Stock option (right to buy American Depositary Shares) -- -- --
holding Stock option (right to buy American Depositary Shares) -- -- --
holding American Depositary Shares -- -- --
Holdings After Transaction: Stock option (right to buy American Depositary Shares) — 172 shares (Direct); American Depositary Shares — 35,304 shares (Direct)
Footnotes (1)
  1. The options reported in this row were granted to the Reporting Person by the Issuer on July 16, 2020, and are fully vested and exercisable as of the date of this report. The options reported in this row were granted to the Reporting Person by the Issuer on April 19, 2021, and are fully vested and exercisable as of the date of this report. The options reported in this row were granted to the Reporting Person by the Issuer on March 7, 2022, and are fully vested and exercisable as of the date of this report. The options reported in this row were granted to the Reporting Person by the Issuer on March 21, 2023, and are fully vested and exercisable as of the date of this report. The options reported in this row were granted to the Reporting Person by the Issuer on March 18, 2024, and are fully vested and exercisable as of the date of this report. The options reported in this row were granted to the Reporting Person by the Issuer on March 16, 2025, and are fully vested and exercisable as of the date of this report.
Direct ADS holdings 35,304 American Depositary Shares Directly owned as of Form 3 reporting date
Option exercise price $52.80 per share Stock option expiring July 16, 2030; 172 underlying ADS
Option exercise price $109.04 per share Stock option expiring April 19, 2031; 2,971 underlying ADS
Option exercise price $14.12 per share Stock option expiring March 7, 2032; 1,705 underlying ADS
Option exercise price $6.48 per share Stock option expiring March 21, 2033; 1,714 underlying ADS
Option exercise price $2.96 per share Stock option expiring March 18, 2034; 2,520 underlying ADS
Option exercise price $6.16 per share Stock option expiring March 16, 2035; 3,821 underlying ADS
Option exercise price $2.14 per share Stock option expiring March 16, 2036; 5,172 underlying ADS
American Depositary Shares financial
"underlying_security_title: "American Depositary Shares""
American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.
Stock option (right to buy American Depositary Shares) financial
"security_title: "Stock option (right to buy American Depositary Shares)""
fully vested and exercisable financial
"are fully vested and exercisable as of the date of this report"
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SEC Form 3
FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0104
Estimated average burden
hours per response:0.5
1. Name and Address of Reporting Person*
Cohen Neil Harris

(Last)(First)(Middle)
C/O CHEMOMAB THERAPEUTICS LTD.,
10 HABARZEL ST., BUILDING C, 10TH FLOOR

(Street)
TEL AVIV6158101

(City)(State)(Zip)

ISRAEL

(Country)
2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026
3. Issuer Name and Ticker or Trading Symbol
Chemomab Therapeutics Ltd. [ CMMB ]
3a. Foreign Trading Symbol
5. If Amendment, Date of Original Filed (Month/Day/Year)
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
American Depositary Shares35,304D
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year)3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock option (right to buy American Depositary Shares) (1)07/16/2030American Depositary Shares172$52.8D
Stock option (right to buy American Depositary Shares) (2)04/19/2031American Depositary Shares2,971$109.04D
Stock option (right to buy American Depositary Shares) (3)03/07/2032American Depositary Shares1,705$14.12D
Stock option (right to buy American Depositary Shares) (4)03/21/2033American Depositary Shares1,714$6.48D
Stock option (right to buy American Depositary Shares) (5)03/18/2034American Depositary Shares2,520$2.96D
Stock option (right to buy American Depositary Shares) (6)03/16/2035American Depositary Shares3,821$6.16D
Stock option (right to buy American Depositary Shares)03/16/202703/16/2036American Depositary Shares5,172$2.14D
Explanation of Responses:
1. The options reported in this row were granted to the Reporting Person by the Issuer on July 16, 2020, and are fully vested and exercisable as of the date of this report.
2. The options reported in this row were granted to the Reporting Person by the Issuer on April 19, 2021, and are fully vested and exercisable as of the date of this report.
3. The options reported in this row were granted to the Reporting Person by the Issuer on March 7, 2022, and are fully vested and exercisable as of the date of this report.
4. The options reported in this row were granted to the Reporting Person by the Issuer on March 21, 2023, and are fully vested and exercisable as of the date of this report.
5. The options reported in this row were granted to the Reporting Person by the Issuer on March 18, 2024, and are fully vested and exercisable as of the date of this report.
6. The options reported in this row were granted to the Reporting Person by the Issuer on March 16, 2025, and are fully vested and exercisable as of the date of this report.
Remarks:
This Form 3 has been filed after March 18, 2026 but prior to April 20, 2026 in reliance on the temporary relief made available to the directors and officers of certain foreign private issuers by the Staff of the Securities and Exchange Commission in its no-action letter dated March 13, 2026.
/s/ Neil Cohen04/10/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What insider holdings did CMMB director Neil Harris Cohen report on this Form 3?

Neil Harris Cohen reported direct ownership of 35,304 American Depositary Shares of Chemomab Therapeutics Ltd. He also disclosed multiple fully vested stock options giving him the right to buy additional American Depositary Shares at various exercise prices and expiration dates, reflecting his existing equity compensation.

Are Neil Harris Cohen’s Chemomab stock options vested and exercisable?

Yes. Footnotes state each option grant reported is fully vested and exercisable as of the report date. The options were granted on dates from July 16, 2020 through March 16, 2025, so he can choose to exercise them any time before their respective expiration dates.

Does this CMMB Form 3 show any recent insider buying or selling activity?

The Form 3 shows holdings only, not new purchases or sales. Transaction records are categorized as holdings with unknown transaction codes, and summary data show no buy, sell, exercise, gift, or tax-withholding transactions, indicating this filing primarily establishes Neil Harris Cohen’s existing position.

What is the lowest exercise price among Neil Harris Cohen’s Chemomab options?

The lowest disclosed exercise price is $2.14 per American Depositary Share for an option expiring on March 16, 2036, covering 5,172 underlying shares. This grant is fully vested and exercisable according to the footnotes included with the filing.

What is the highest exercise price among the Chemomab options reported?

The highest disclosed exercise price is $109.04 per American Depositary Share, tied to options over 2,971 underlying shares expiring on April 19, 2031. Footnotes state these options were granted on that date and are fully vested and exercisable as of the report date.