CGEM Form 144: Proposed Sale of 8,000 Shares

Company CGEM: proposed resale notice under Section 144.

Rhea-AI Filing Summary

Company CGEM: proposed resale notice under Section 144. The filing lists proposed sales of 8,000 shares of Common Stock tied to insider-related sources. The listing shows 4,000 shares from exercise of stock options dated 07/06/2026 and 4,000 shares from Restricted Stock Units dated 02/22/2024. The excerpt also records prior 10b5-1 sales of 8,000 shares on 05/05/2026 for $116,976.02. The filing names a broker and provides an address for the selling party.

Insights

Securities Compliance Counsel

Routine Section 144 resale notice describing planned and prior transactions.

This excerpt lists proposed dispositions totaling 8,000 shares and breaks them into 4,000 shares from option exercises and 4,000 shares from RSUs with the specific grant/vesting dates shown. The filing also documents prior 10b5-1 sales of 8,000 shares on 05/05/2026 for $116,976.02.

All statements are procedural: the notice supplies broker details and transaction dates. Timing and cash‑flow treatment for the proposed sales are those listed next to each line item in the excerpt; subsequent filings would show completion or settlement.

Key Figures

Proposed shares to be sold: 8,000 shares Options-related shares: 4,000 shares RSU-related shares: 4,000 shares +2 more

5 metrics

Proposed shares to be sold 8,000 shares Aggregate proposed resale listed in the excerpt

Options-related shares 4,000 shares Exercise of stock options dated <date>07/06/2026</date>

RSU-related shares 4,000 shares Restricted Stock Units dated <date>02/22/2024</date>

Prior 10b5-1 sales 8,000 shares 10b5-1 sales on <date>05/05/2026</date>

Proceeds from prior 10b5-1 sales $116,976.02 Proceeds recorded for 10b5-1 sales on <date>05/05/2026</date>

Key Terms

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

4 terms

Form 144 regulatory

"Section header and overall document indicating proposed resale notice"

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

"Line item recording prior sales executed pursuant to a 10b5-1 plan"

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 Units financial

"Listed as the source for 4,000 shares dated 02/22/2024"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Exercise of Stock Options financial

"Listed as the source for 4,000 shares dated 07/06/2026"

FAQ

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

What does CGEM's Form 144 disclose about shares proposed for sale?

The Form 144 discloses a proposed resale of 8,000 shares of Common Stock, broken into 4,000 shares from option exercises and 4,000 shares from RSUs, with the dates shown in the filing.

Were any prior insider sales recorded for CGEM in this excerpt?

Yes. The excerpt records 10b5-1 sales of 8,000 shares on 05/05/2026 for $116,976.02, including broker information and an address for the selling party.

What dates are tied to the securities listed in the Form 144 for CGEM?

The listing shows option-related securities dated 07/06/2026 and RSUs dated 02/22/2024, and prior 10b5-1 sales dated 05/05/2026, as presented in the excerpt.

Does the filing state who will execute the sales for CGEM?

The excerpt names a broker, Morgan Stanley Smith Barney LLC, and provides a broker address; the selling party's name and address are also included for the recorded 10b5-1 sales.

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

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Accepted by SEC EDGAR 07/06/2026 - 04:25 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	0001838061
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	CULLINAN THERAPEUTICS, INC.
SEC File Number	001-39856
Address of Issuer	One Main Street Suite 1350 Cambridge MASSACHUSETTS 02142
Phone	6174104650
Name of Person for Whose Account the Securities are To Be Sold	JENNIFER MICHAELSON
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	8000	141040.00	61458046	07/06/2026	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	07/06/2026	Exercise of Stock Options	Issuer			4000	07/06/2026	Cash
Common	02/22/2024	Restricted Stock Units	Issuer			4000	02/22/2024	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 JENNIFER MICHAELSON One Main Street Suite 1350 Cambridge MA 02142	Common	05/05/2026	8000	116976.02

144: Remarks and Signature

Remarks
Date of Notice	07/06/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/07/2025
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/ Jennifer Michaelson
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)