KYMR (NYSE) Form 144 lists option exercise sale; Chadwick 10b5-1 trades

Rhea-AI Filing Summary

KYMR reported a Form 144 notifying the proposed sale of 1,300 shares tied to an exercise of stock options for cash on 04/15/2026. The filing also lists multiple 10b5-1 sales by Jeremy Chadwick in March–April 2026, including large trades such as 91,250 shares on 03/23/2026.

Insights

Securities Counsel

Routine Form 144 notice of proposed affiliate sales; no new material disclosure.

The filing lists a proposed sale of 1,300 shares via option exercise on 04/15/2026 and records prior 10b5-1 sales executed by Jeremy Chadwick in March–April 2026. These are transactional disclosures required under federal rules.

Timing and cash‑flow treatment are stated as cash for the exercise; broader impact depends on actual settlement and any additional sales the filer may execute.

Key Figures

Proposed sale (option exercise): 1,300 shares 10b5-1 sale example: 91,250 shares 10b5-1 sale example: 24,727 shares +2 more

5 metrics

Proposed sale (option exercise) 1,300 shares Exercise of stock options on 04/15/2026

10b5-1 sale example 91,250 shares Trade dated 03/23/2026 with proceeds 7063733.26

10b5-1 sale example 24,727 shares Trade dated 03/25/2026 with proceeds 1,984,554.44

10b5-1 sale example 14,640 shares Trade dated 04/01/2026 with proceeds 1,251,166.61

10b5-1 sale example 5,251 shares Trade dated 04/14/2026 with proceeds 472,598.51

Key Terms

10b5-1 Sales, Exercise of Stock Options, Cash

3 terms

10b5-1 Sales regulatory

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

Exercise of Stock Options financial

"Common | 04/15/2026 | Exercise of Stock Options"

Cash financial

"04/15/2026 | Cash"

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	1300	116824.50	81642394	04/15/2026	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	04/15/2026	Exercise of Stock Options	Issuer			1300	04/15/2026	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	04/14/2026	5251	472598.51
10b5-1 Sales for JEREMY CHADWICK 500 North Beacon Street, 4th Floor Watertown MA 02472	Common	04/01/2026	14640	1251166.61
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 disclose?

It discloses a proposed sale of 1,300 shares by option exercise on 04/15/2026. The filing also lists several prior 10b5-1 sales by Jeremy Chadwick in March–April 2026 with per‑trade share counts and proceeds.

Who executed the recent 10b5-1 sales listed in KYMR's filing?

Jeremy Chadwick is identified as the seller for multiple 10b5-1 trades. The entries show trades dated between 03/02/2026 and 04/14/2026 with individual share counts and proceeds for each trade.

How many shares are proposed to be sold via option exercise on 04/15/2026?

The Form 144 lists a proposed sale of 1,300 shares via exercise on 04/15/2026. The method of settlement is shown as cash in the provided excerpt.

What is a 10b5-1 sale referenced in the KYMR filing?

A 10b5-1 sale is a prearranged trading plan used by insiders to sell shares. The filing itemizes specific 10b5-1 transactions by date, share count, and proceeds for Jeremy Chadwick.

Does the filing state who receives proceeds from the proposed sale?

The exercise is listed as a cash transaction, implying proceeds to the seller/issuer relationship defined in the entry. The excerpt does not expand on use of proceeds beyond the cash settlement label.