Form 144 and 10b5-1 sales reported for KYMR (NASDAQ: KYMR)

Rhea-AI Filing Summary

Form 144 filed reporting a proposed sale of 14,640 shares of Common Stock. The filing lists the sale as an Exercise of Stock Options with proceeds shown and a trade date of 04/01/2026. The submission also lists multiple prior 10b5-1 sales by Jeremy Chadwick in March 2026, including 91,250 shares on 03/23/2026 and 24,727 shares on 03/25/2026.

Key Figures

Proposed sale: 14,640 shares 10b5-1 sale: 91,250 shares 10b5-1 sale: 24,727 shares +3 more

6 metrics

Proposed sale 14,640 shares Exercise of Stock Options dated 04/01/2026

10b5-1 sale 91,250 shares Sale on 03/23/2026 by Jeremy Chadwick

10b5-1 sale 24,727 shares Sale on 03/25/2026 by Jeremy Chadwick

10b5-1 sale 7,600 shares Sale on 03/31/2026 by Jeremy Chadwick

Proceeds (example) $7,063,733.26 Proceeds shown for 91,250-share sale on 03/23/2026

Proceeds (example) $1,984,554.44 Proceeds shown for 24,727-share sale on 03/25/2026

Key Terms

10b5-1, Exercise of Stock Options, Form 144

3 terms

10b5-1 regulatory

"10b5-1 Sales for JEREMY CHADWICK 500 North Beacon Street"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Exercise of Stock Options financial

"Common | 04/01/2026 | Exercise of Stock Options | Issuer"

Form 144 regulatory

"144: Securities To Be Sold"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	14640	1219365.60	81642394	04/01/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	04/01/2026	Exercise of Stock Options	Issuer			14640	04/01/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for JEREMY CHADWICK 500 North Beacon Street, 4th Floor Watertown MA 02472	Common	03/31/2026	7600	648881.92
10b5-1 Sales for JEREMY CHADWICK 500 North Beacon Street, 4th Floor Watertown MA 02472	Common	03/25/2026	24727	1984554.44
10b5-1 Sales for JEREMY CHADWICK 500 North Beacon Street, 4th Floor Watertown MA 02472	Common	03/23/2026	91250	7063733.26
10b5-1 Sales for JEREMY CHADWICK 500 North Beacon Street, 4th Floor Watertown MA 02472	Common	03/11/2026	25758	2145673.70
JEREMY CHADWICK 500 North Beacon Street, 4th Floor Watertown MA 02472	Common	03/04/2026	3919	334272.49
JEREMY CHADWICK 500 North Beacon Street, 4th Floor Watertown MA 02472	Common	03/02/2026	2039	181321.64

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does KYMR's Form 144 report?

It reports a proposed sale of 14,640 shares via exercise of stock options dated 04/01/2026. The filing also lists prior 10b5-1 sales by Jeremy Chadwick in March 2026, with specific trade dates and share counts included.

Who appears as the selling party in the KYMR Form 144?

The filing lists Jeremy Chadwick in connection with multiple 10b5-1 sales during March 2026. A broker entry for Morgan Stanley Smith Barney LLC is shown for the 14,640-share transaction dated 04/01/2026.

How many shares were sold under the 10b5-1 trades listed?

The excerpt lists several 10b5-1 transactions, for example 91,250 shares on 03/23/2026 and 7,600 shares on 03/31/2026. Each entry shows trade dates, share counts, and dollar proceeds for those sales.

Does the Form 144 indicate proceeds for the proposed sale?

Yes; the 14,640-share line shows a proceeds figure associated with the transaction dated 04/01/2026. Several prior March sales also display gross proceeds alongside share counts and dates.

Are the March 2026 10b5-1 sales separate from the 04/01/2026 transaction?

Yes; the filing lists multiple March 2026 10b5-1 sales by Jeremy Chadwick on distinct dates and a separate 14,640-share entry dated 04/01/2026 described as an exercise of stock options.