MPLT insider plans sale of 21,262 shares

MPLT insider Robert Malenka has filed a notice of proposed sale of 21,262 common shares under Rule 144.

Rhea-AI Filing Summary

MPLT insider Robert Malenka has filed a notice of proposed sale of 21,262 common shares under Rule 144. The shares are to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services, with an indicated aggregate market value of 394,469.63 as of the filing.

The shares were acquired on 01/23/2026 through the vesting of restricted stock under a registered plan in exchange for services rendered. The notice also reports a prior sale of 6,524 common shares on 01/28/2026 for gross proceeds of 121,689.56. Shares outstanding were 45,373,033 as of the figures shown; this is a baseline figure, not the amount being sold.

FAQ

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

What does the MPLT Form 144 filing for Robert Malenka disclose?

The filing shows that insider Robert Malenka plans to sell 21,262 MPLT common shares under Rule 144. The proposed sale is through Morgan Stanley Smith Barney, tied to recently vested restricted stock, with an indicated aggregate market value of 394,469.63 and prior sales also disclosed.

How many MPLT shares does Robert Malenka plan to sell under this Form 144?

The notice states a proposed sale of 21,262 MPLT common shares. These shares are listed with an aggregate market value of 394,469.63 and will be sold through Morgan Stanley Smith Barney, subject to Rule 144 conditions and market execution on the NASDAQ exchange.

How were the MPLT shares in the Form 144 acquired by Robert Malenka?

The filing explains that the 21,262 MPLT shares were acquired on 01/23/2026 through restricted stock vesting under a registered plan. The consideration is described as services rendered, meaning the shares relate to compensation rather than a cash purchase at the time of acquisition.

What prior MPLT share sales by Robert Malenka are reported in this Form 144?

The document reports that Robert Malenka sold 6,524 MPLT common shares on 01/28/2026. Those sales generated gross proceeds of 121,689.56. This three-month sales history is required disclosure under Rule 144 to show recent selling activity by the same person.

What is the reported number of MPLT shares outstanding in this filing?

The Form 144 lists 45,373,033 MPLT common shares outstanding. This figure provides context for the relative size of the 21,262-share planned sale but is a baseline company share count rather than an amount related to the insider’s individual transaction.

On which exchange are the MPLT shares in the Form 144 expected to trade?

The filing identifies NASDAQ as the securities exchange for the MPLT common shares covered by the notice. The broker named is Morgan Stanley Smith Barney LLC Executive Financial Services, which would handle the transaction in compliance with Rule 144 requirements.

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

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Accepted by SEC EDGAR 01/29/2026 - 04:06 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	0002021198
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	MAPLIGHT THERAPEUTICS, INC.
SEC File Number	001-42914
Address of Issuer	800 Chesapeake Drive Redwood City CALIFORNIA 94063
Phone	(617) 984-6300
Name of Person for Whose Account the Securities are To Be Sold	ROBERT MALENKA
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	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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	21262	394469.63	45373033	01/29/2026	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	01/23/2026	Restricted stock vesting under a registered plan	Issuer			21262	01/23/2026	Services Rendered

* 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
ROBERT MALENKA 800 Chesapeake Drive Redwood City CA 94063	Common	01/28/2026	6524	121689.56

144: Remarks and Signature

Remarks
Date of Notice	01/29/2026
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/ Robert Malenka
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)