Insider sells multiple 2,000-share blocks via 10b5-1

Insider sales reported under Rule 144 via 10b5-1 plan.

Rhea-AI Filing Summary

Insider sales reported under Rule 144 via 10b5-1 plan. The filing lists five separate 10b5-1 dispositions by Jane Henderson of 2,000 shares each on 02/02/2026, 03/02/2026, 03/25/2026, 04/01/2026, and 04/16/2026, with proceeds shown for each trade.

Key Figures

Sale on 02/02/2026: 2,000 shares Sale on 03/02/2026: 2,000 shares Sale on 03/25/2026: 2,000 shares +4 more

7 metrics

Sale on 02/02/2026 2,000 shares 10b5-1 sale with proceeds $131,622.00

Sale on 03/02/2026 2,000 shares 10b5-1 sale with proceeds $140,430.40

Sale on 03/25/2026 2,000 shares 10b5-1 sale with proceeds $170,000.00

Sale on 04/01/2026 2,000 shares 10b5-1 sale with proceeds $170,016.00

Sale on 04/16/2026 2,000 shares 10b5-1 sale with proceeds $180,000.00

Restricted Stock Award date 02/01/2023 Award date for restricted shares referenced in filing

Securities to be sold (listed) 2,000 shares Common shares tied to the restricted award (02/01/2023)

Key Terms

10b5-1, Restricted Stock Award, Form 144

3 terms

10b5-1 regulatory

"10b5-1 Sales for JANE HENDERSON 221 Crescent St."

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.

Restricted Stock Award financial

"Restricted Stock Award | Issuer | 02/01/2023"

A restricted stock award is company shares given to an employee or executive that cannot be sold or fully owned until certain conditions—like staying with the company for a set time or hitting performance targets—are met. Think of it as a gift that only becomes yours after you fulfill specific obligations; for investors, these awards matter because they can increase the total shares outstanding when they vest, reveal how management is being paid and motivated, and create potential selling pressure when restrictions lift.

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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did APGE insider Jane Henderson report in this Form 144?

Jane Henderson reported five 10b5-1 sales of common stock, each of 2,000 shares, executed on 02/02/2026, 03/02/2026, 03/25/2026, 04/01/2026, and 04/16/2026. The filing lists gross proceeds for each trade.

Were these sales part of a prearranged trading plan for APGE?

Yes. The transactions are labeled as 10b5-1 Sales, indicating they were executed under a pre‑arranged trading plan. The filing presents each trade date, share count, and gross proceeds for the trades.

How many shares and proceeds are shown for each reported sale?

Each reported sale shows 2,000 shares. The filing lists proceeds of $131,622.00, $140,430.40, $170,000.00, $170,016.00, and $180,000.00 on their respective trade dates.

What security type and grant date are referenced in the filing?

The filing references Common stock linked to a Restricted Stock Award with an award date of 02/01/2023. The issuer is listed as the source of the restricted award.

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

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Accepted by SEC EDGAR 05/01/2026 - 04:45 PM EDT 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	0001422304
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	APOGEE THERAPEUTICS INC
SEC File Number	001-41740
Address of Issuer	221 Crescent St., Building 17 Suite 102b Waltham MASSACHUSETTS 02453
Phone	6503945230
Name of Person for Whose Account the Securities are To Be Sold	JANE HENDERSON
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	Officer

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	2000	165780.00	55998605	05/01/2026	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	02/01/2023	Restricted Stock Award	Issuer			2000	02/01/2023	N/A

* 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 JANE HENDERSON 221 Crescent St., Building 17 Suite 102b Waltham MA 02453	Common	04/16/2026	2000	180000.00
10b5-1 Sales for JANE HENDERSON 221 Crescent St., Building 17 Suite 102b Waltham MA 02453	Common	04/01/2026	2000	170016.00
10b5-1 Sales for JANE HENDERSON 221 Crescent St., Building 17 Suite 102b Waltham MA 02453	Common	03/25/2026	2000	170000.00
10b5-1 Sales for JANE HENDERSON 221 Crescent St., Building 17 Suite 102b Waltham MA 02453	Common	03/02/2026	2000	140430.40
10b5-1 Sales for JANE HENDERSON 221 Crescent St., Building 17 Suite 102b Waltham MA 02453	Common	02/02/2026	2000	131622.00

144: Remarks and Signature

Remarks
Date of Notice	05/01/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/02/2025
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	/s/ Jane Henderson
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)