KYMR (KYMR) Form 144: 3,000-share sale; prior 10b5-1 sales disclosed

Rhea-AI Filing Summary

KYMR submitted a Form 144 reporting a proposed sale of 3,000 common shares tied to an exercise of stock options on 05/11/2026, with settlement indicated as cash and Morgan Stanley Smith Barney LLC listed in the securities table.

The filing also lists prior 10b5-1 sales by Elena Ridloff: 4,600 shares on 04/01/2026 for $392,921.88 and 7,400 shares on 03/31/2026 for $631,738.74.

Insights

Securities Attorney

Form 144 notifies the market of a proposed resale tied to option exercise; prior 10b5-1 sales are disclosed.

The filing lists a proposed sale of 3,000 common shares on 05/11/2026 described as resulting from an exercise of stock options. It names Morgan Stanley Smith Barney LLC in the securities table and records cash settlement.

Prior transactions shown are 10b5-1 plan sales by Elena Ridloff: 4,600 (04/01/2026) and 7,400 (03/31/2026). This is a notification filing and does not itself effect a transfer.

Key Figures

Proposed sale: 3,000 shares Prior 10b5-1 sale 1: 4,600 shares Proceeds from 04/01/2026 sale: $392,921.88 +2 more

5 metrics

Proposed sale 3,000 shares Exercise of stock options on <date>05/11/2026</date>

Prior 10b5-1 sale 1 4,600 shares Sale by Elena Ridloff on <date>04/01/2026</date>

Proceeds from 04/01/2026 sale $392,921.88 Gross proceeds reported for 4,600 shares

Prior 10b5-1 sale 2 7,400 shares Sale by Elena Ridloff on <date>03/31/2026</date>

Proceeds from 03/31/2026 sale $631,738.74 Gross proceeds reported for 7,400 shares

Key Terms

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

4 terms

Form 144 regulatory

"Filer Information | 144: Filer Information"

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.

10b5-1 regulatory

"10b5-1 Sales for ELENA RIDLOFF 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

"Securities To Be Sold | Exercise of Stock Options"

Cash settlement financial

"Securities To Be Sold | 3000 | 05/11/2026 | Cash"

Cash settlement is a process where, instead of exchanging physical assets like stocks or commodities, the parties involved settle the difference in value with money after a contract ends. For investors, it simplifies transactions by avoiding the need to handle or deliver the actual asset, making it quicker and more convenient to complete trades. This method ensures a straightforward way to settle agreements based on their final value.

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	3000	258240.00	82257588	05/11/2026	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	05/11/2026	Exercise of Stock Options	Issuer			3000	05/11/2026	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 ELENA RIDLOFF 500 North Beacon Street, 4th Floor Watertown MA 02472	Common	04/01/2026	4600	392921.88
10b5-1 Sales for ELENA RIDLOFF 500 North Beacon Street, 4th Floor Watertown MA 02472	Common	03/31/2026	7400	631738.74

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 3,000 common shares tied to an exercise of stock options on 05/11/2026. The document lists Morgan Stanley Smith Barney LLC in the securities table and shows cash settlement.

Who executed prior sales disclosed in the filing?

Prior sales were executed under a 10b5-1 plan by Elena Ridloff: 4,600 shares (04/01/2026) and 7,400 shares (03/31/2026). Gross proceeds for those sales are shown in the filing.

What proceeds are shown for the prior 10b5-1 sales?

The filing shows proceeds of $392,921.88 for 4,600 shares (04/01/2026) and $631,738.74 for 7,400 shares (03/31/2026). These amounts are listed in the securities table.

Does this Form 144 effect the sale of the shares?

No. The Form 144 is a notice of a proposed sale; it does not itself consummate a transaction. Actual transfers or settlement details are not completed by this filing.

Who is listed as the broker or selling agent in the filing?

Morgan Stanley Smith Barney LLC is listed in the securities table associated with the transaction, showing an address at 1 New York Plaza, 8th Floor, New York, NY 10004 and the proposed 3,000 share entry.