CGEM (NASDAQ: CGEM) insider files to sell 4,000 common shares via Rule 144

Rhea-AI Filing Summary

Shareholder Jennifer Michaelson has filed a Rule 144 notice to sell up to 4,000 shares of common stock of the company trading under symbol CGEM. The proposed sale is to be executed through Morgan Stanley Smith Barney LLC, with an aggregate market value of $46,400 based on the price used in the notice, and an approximate sale date of January 22, 2026 on the NASDAQ. The filing notes that these 4,000 shares were acquired as restricted stock units from the issuer on December 11, 2023.

The notice also lists recent sales over the past three months for Michaelson’s account, including transactions of 1,345 shares for $13,458.34, 995 shares for $11,840.50, 2,148 shares for $26,592.24, and 4,000 shares for $49,200. Some of these trades are identified as being made under a Rule 10b5-1 trading plan. The filer represents that they are not aware of any undisclosed material adverse information about the issuer’s current or prospective operations.

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	4000	46400.00	59076259	01/22/2026	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	12/11/2023	Restricted Stock Units	Issuer			4000	12/11/2023	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 JENNIFER MICHAELSON One Main Street Cambridge MA 02142	Common	12/19/2025	1345	13458.34
10b5-1 Sales for JENNIFER MICHAELSON One Main Street Cambridge MA 02142	Common	12/15/2025	995	11840.50
JENNIFER MICHAELSON One Main Street Cambridge MA 02142	Common	12/12/2025	2148	26592.24
10b5-1 Sales for JENNIFER MICHAELSON One Main Street Cambridge MA 02142	Common	11/24/2025	4000	49200.00

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

How many CGEM shares does Jennifer Michaelson plan to sell under this Rule 144 notice?

The Rule 144 notice states that 4,000 shares of common stock are planned to be sold for the account of Jennifer Michaelson.

What is the estimated market value of the CGEM shares in this Form 144 filing?

The notice reports an aggregate market value of $46,400 for the 4,000 common shares proposed to be sold.

When is the approximate sale date for the CGEM shares in this Rule 144 filing?

The proposed sale date listed in the filing is January 22, 2026.

Which broker is handling the planned CGEM share sale for Jennifer Michaelson?

The filing identifies Morgan Stanley Smith Barney LLC Executive Financial Services, located at One New York Plaza, as the broker for the 4,000-share sale.

How and when did Jennifer Michaelson acquire the CGEM shares covered by this Form 144?

The 4,000 shares covered by the notice were acquired as restricted stock units from the issuer on December 11, 2023, with the payment date shown as the same day.

What prior CGEM stock sales by Jennifer Michaelson are disclosed in the last three months?

The filing lists several recent sales of common stock for Michaelson’s account: 1,345 shares on December 19, 2025 for $13,458.34, 995 shares on December 15, 2025 for $11,840.50, 2,148 shares on December 12, 2025 for $26,592.24, and 4,000 shares on November 24, 2025 for $49,200.00. Several of these trades are labeled as 10b5-1 sales.

What representation does the seller make about inside information in this CGEM Rule 144 filing?

By signing the notice, the person for whose account the securities are to be sold represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed.