MapLight Therapeutics officer proposes $120K sale

Jefferies LLC is listed as the broker, and Nasdaq as the exchange, for the proposed transaction.

Rhea-AI Filing Summary

Erin Pennock Foff, an officer of MapLight Therapeutics, Inc. (MPLT), gave notice of a proposed sale of 15,355 common shares, listed at an aggregate market value of $119,922.50. October 15, 2026, is listed as the approximate sale date, with Jefferies LLC as broker and Nasdaq as the exchange. The stated purpose is solely to satisfy tax-withholding obligations in connection with restricted stock unit vesting.

Key Figures

Proposed shares for sale: 15,355 common shares Aggregate market value: $119,922.50 Shares outstanding: 44,850,000 shares

3 metrics

Proposed shares for sale 15,355 common shares Approximate sale date October 15, 2026

Aggregate market value $119,922.50 Proposed sale

Shares outstanding 44,850,000 shares Securities information

Key Terms

Rule 144, Restricted Stock Unit Grant, tax-withholding obligations

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144"

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 Unit Grant financial

"Restricted Stock Unit Grant"

tax-withholding obligations financial

"solely to satisfy tax-withholding obligations"

FAQ

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

How many MPLT shares did Erin Pennock Foff propose to sell?

Erin Pennock Foff gave notice of a proposed sale of 15,355 common shares, with an aggregate market value of $119,922.50.

Why is Erin Pennock Foff selling MPLT shares?

The proposed sale is stated to be solely to satisfy tax-withholding obligations in connection with restricted stock unit vesting.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 10/15/2026 - 05:31 PM EDT Accepted by SEC EDGAR 10/15/2026 - 05:30 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	0002021233
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	Foff Erin Pennock
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	Jefferies LLC 520 Madison Avenue, 4th Floor New York NY 10022	15355	119922.50	44850000	10/15/2026	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	11/09/2023	Restricted Stock Unit Grant	Maplight Therapeutics, Inc.			1546	11/09/2023	N/A
Common	07/30/2023	Restricted Stock Unit Grant	Maplight Therapeutics, Inc.			3348	07/30/2023	N/A
Common	10/26/2025	Restricted Stock Unit Grant	Maplight Therapeutics, Inc.			12068	10/26/2025	N/A
Common	05/02/2024	Restricted Stock Unit Grant	Maplight Therapeutics, Inc.			6350	05/02/2024	N/A
Common	07/18/2025	Restricted Stock Unit Grant	Maplight Therapeutics, Inc.			12932	07/18/2025	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
Erin Pennock Foff 800 Chesapeake Drive Redwood City CA 94063	Common	07/15/2026	15000	549297.15
Erin Pennock Foff 800 Chesapeake Drive Redwood City CA 94063	Common	07/15/2026	13455	493611.48
Erin Pennock Foff 800 Chesapeake Drive Redwood City CA 94063	Common	07/16/2026	15047	553476.81
Erin Pennock Foff 800 Chesapeake Drive Redwood City CA 94063	Common	07/17/2026	3656	138558.38

144: Remarks and Signature

Remarks	Shares to be sold solely to satisfy tax-withholding obligations in connection w/RSU vesting
Date of Notice	10/15/2026
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	Erin Foff
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)