KYMR (NASDAQ: KYMR) Rule 144 notice — 66,893 shares; prior 10b5-1 sales listed

Rhea-AI Filing Summary

KYMR Rule 144 notice: Morgan Stanley Smith Barney LLC states 66,893 shares of common stock are to be sold following an exercise of stock options on 06/17/2026 for cash. The filing also lists multiple 10b5-1 sales by Jeremy Chadwick earlier in 2026, including a 91,250-share sale on 03/23/2026 for $7,063,733.26 and other transactions in March–May 2026.

Insights

Securities Counsel

Routine Rule 144 resale notice tied to option exercise and prior 10b5-1 sales.

The filing lists an option exercise-related sale of 66,893 shares by Morgan Stanley Smith Barney LLC on 06/17/2026, described as an issuer transaction for cash. Multiple prior 10b5-1 sales by Jeremy Chadwick are itemized with dates and proceeds.

These entries are procedural disclosures required for compliance with resale restrictions; cash‑flow treatment and final purchasers are not detailed in the excerpt. Subsequent public filings or trade reports will show consummation details.

Key Figures

Shares to be sold: 66,893 shares Example 10b5-1 sale: 91,250 shares Example 10b5-1 sale proceeds: $1,984,554.44 +2 more

5 metrics

Shares to be sold 66,893 shares Exercise of stock options on 06/17/2026

Example 10b5-1 sale 91,250 shares Sale on 03/23/2026 for $7,063,733.26

Example 10b5-1 sale proceeds $1,984,554.44 24,727 shares sold on 03/25/2026

Example 10b5-1 sale proceeds $1,251,166.61 14,640 shares sold on 04/01/2026

Total reported single-sale proceeds (largest row) $7,063,733.26 Proceeds from 91,250-share sale on 03/23/2026

Key Terms

10b5-1, Exercise of Stock Options, Issuer

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 | 06/17/2026 | Exercise of Stock Options"

Issuer regulatory

"Exercise of Stock Options | Issuer | 66893 | 06/17/2026 | Cash"

FAQ

What does KYMR's Form 144 disclose about shares to be sold?

It discloses 66,893 shares to be sold following an exercise of stock options on 06/17/2026. The filing lists the method as an issuer sale for cash and does not specify buyers.

Who conducted prior 10b5-1 sales reported in the KYMR filing?

The filing reports multiple 10b5-1 sales by Jeremy Chadwick during March–May 2026. Example: 91,250 shares sold on 03/23/2026 for $7,063,733.26.

Are the proceeds recipients identified in the KYMR Form 144?

The excerpt states transactions were for cash but does not name purchasers; Morgan Stanley Smith Barney LLC is listed as the selling broker/agent for the option exercise.

Do the listed 10b5-1 sales indicate voluntary or pre-planned trades for KYMR?

Yes. Each prior entry is labeled as a 10b5-1 sale, indicating the trades were effected under a pre-arranged trading plan rather than ad hoc open-market decisions.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 06/17/2026 - 04:43 PM Accepted by SEC EDGAR 06/17/2026 - 04:43 PM Learn about SEC filing dates

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	66893	5849123.92	82257588	06/17/2026	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	06/17/2026	Exercise of Stock Options	Issuer			66893	06/17/2026	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	05/27/2026	4279	349095.37
10b5-1 Sales for JEREMY CHADWICK 500 North Beacon Street, 4th Floor Watertown MA 02472	Common	05/26/2026	8851	706272.06
JEREMY CHADWICK 500 North Beacon Street, 4th Floor Watertown MA 02472	Common	05/26/2026	4054	317922.32
10b5-1 Sales for JEREMY CHADWICK 500 North Beacon Street, 4th Floor Watertown MA 02472	Common	04/22/2026	300	27000.00
10b5-1 Sales for JEREMY CHADWICK 500 North Beacon Street, 4th Floor Watertown MA 02472	Common	04/15/2026	1300	117000.00
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

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)