Insider plans 58,258-share sale of common stock

A holder of CUE common stock has submitted a notice under Rule 144 describing a proposed sale of up to 58,258 shares of common stock.

Rhea-AI Filing Summary

A holder of CUE common stock has submitted a notice under Rule 144 describing a proposed sale of up to 58,258 shares of common stock. The shares were acquired as restricted stock units vesting under a registered compensation plan on 08/01/2026. Planned sales include 40,000 shares with an aggregate market value of 1,080,400 and 18,258 shares with an aggregate market value of 515,971, in each case through Maxim Group LLC on the NASDAQ around 08/12/2026 and 08/13/2026, respectively. The issuer has 7,264,414 shares of this class outstanding, providing context for the relative size of the proposed sale.

Key Figures

Planned shares in first tranche: 40,000 shares Aggregate market value first tranche: 1,080,400 Planned shares in second tranche: 18,258 shares +4 more

7 metrics

Planned shares in first tranche 40,000 shares Proposed sale through Maxim Group LLC around 08/12/2026

Aggregate market value first tranche 1,080,400 Aggregate market value for 40,000 shares of common stock

Planned shares in second tranche 18,258 shares Proposed sale through Maxim Group LLC around 08/13/2026

Aggregate market value second tranche 515,971 Aggregate market value for 18,258 shares of common stock

Total shares proposed for sale 58,258 shares Total common shares from RSUs vesting under a registered plan

Shares outstanding 7,264,414 shares Number of common shares of the issuer outstanding

RSU vesting date 08/01/2026 Date restricted stock units vested under registered compensation plan

Key Terms

Rule 144, Restricted Stock Units, registered plan

3 terms

Rule 144 regulatory

"A holder of CUE common stock has submitted a notice under Rule 144 describing a proposed sale"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Units financial

"Restricted Stock Units vesting under a registered plan on 08/01/2026"

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.

registered plan regulatory

"Restricted Stock Units vesting under a registered compensation plan on 08/01/2026"

A registered plan is a savings or investment account that a government recognizes for special tax treatment and rules, such as limits on how much you can put in and conditions for withdrawals. For investors it matters because those rules change how much of your gains are taxed, how quickly your money can be accessed and what strategies make sense — like a labeled jar that gives tax breaks but comes with rules about when and how you can take the money out.

FAQ

What share sale is disclosed for CUE in this Rule 144 notice?

The notice describes a proposed sale of up to 58,258 shares of CUE common stock. These shares relate to restricted stock units that vested under a registered compensation plan on 08/01/2026, and are planned for resale in the public market.

How are the 58,258 CUE shares split between planned sale tranches?

The proposed sale is split into 40,000 shares with an aggregate market value of 1,080,400 and 18,258 shares valued at 515,971. Each tranche is scheduled for separate approximate sale dates in August 2026 through the same broker.

Who is the broker for the planned CUE share sales?

The planned sales will be executed through Maxim Group LLC, located at 300 Park Avenue, 16th Floor, New York, NY 10022. Both tranches of CUE common stock are indicated for trading on the NASDAQ market through this broker.

When are the CUE shares expected to be sold under this notice?

The notice lists approximate sale dates of 08/12/2026 for 40,000 shares and 08/13/2026 for 18,258 shares. All 58,258 shares are associated with restricted stock units that vested on 08/01/2026 under a registered plan.

How large is the proposed CUE sale versus shares outstanding?

The issuer has 7,264,414 shares of common stock outstanding. The proposed sale of 58,258 shares represents only a portion of this total, providing context for the relative size of the potential resale.

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

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Available on EDGAR 08/14/2026 - 08:45 PM Accepted by SEC EDGAR 08/14/2026 - 08:45 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	0001725092
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	CUE BIOPHARMA, INC.
SEC File Number	001-38327
Address of Issuer	40 GUEST STREET BOSTON MASSACHUSETTS 02135
Phone	617-949-2680
Name of Person for Whose Account the Securities are To Be Sold	Shao-Lee Lin
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
Relationship to Issuer	Director

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 Stock	Maxim Group LLC 300 Park Ave 16th Floor New York NY 10022	40000	1080400	7264414	08/12/2026	NASDAQ
Common Stock	Maxim Group LLC 300 Park Ave 16th Floor New York NY 10022	18258	515971	7264414	08/13/2026	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 Stock	08/01/2026	Restricted Stock Units vesting under registered plan	Issuer			58258	08/01/2026	Compensation

* 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

Nothing to Report

144: Remarks and Signature

Remarks	The proposed sales reported represent shares to be sold by the reporting person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units. The purpose of the proposed sales is to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and do not represent discretionary transactions by the reporting person.
Date of Notice	08/14/2026
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/ Shao-Lee Lin
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)