AXSM insider plans sale of 4,660 common shares

AXSM received a notice of proposed sale of restricted or control securities.

Rhea-AI Filing Summary

AXSM received a notice of proposed sale of restricted or control securities. A holder plans to sell 4,660 shares of common stock through Goldman Sachs & Co. LLC, with an aggregate market value of $979,205.80, on or after August 6, 2026 on NASD. These shares were acquired on March 15, 2017 as compensation via stock options and will be sold through a cashless exercise/same-day sale transaction.

The filing also lists prior sales of AXSM common stock by Herriot Tabuteau during the preceding three months, including several transactions of 24,833–24,835 shares each on June 9, July 1, and August 5, 2026, with aggregate values in the $4.26–$6.02 million range.

Key Figures

Shares to be sold: 4,660 shares Aggregate market value of planned sale: $979,205.80 Shares outstanding (context): 51,459,766 shares +5 more

8 metrics

Shares to be sold 4,660 shares Planned sale of common stock under notice, via Goldman Sachs & Co. LLC

Aggregate market value of planned sale $979,205.80 Value of 4,660 shares of common stock to be sold

Shares outstanding (context) 51,459,766 shares Approximate common shares outstanding referenced in the notice

Acquisition date of option shares 03/15/2017 Date shares were acquired as compensation via stock options

Proposed sale date 08/06/2026 Planned sale date for the 4,660 shares on NASD

Past sale 1 share amount 24,835 shares One of the Herriot Tabuteau sales on 06/09/2026

Past sale 1 value $6,020,552.85 Aggregate value for one 24,835-share sale on 06/09/2026

Past sale 2 share amount 24,833 shares One of the Herriot Tabuteau sales on 08/05/2026

Key Terms

cashless exercise, same-day sale, restricted or control securities

3 terms

cashless exercise financial

"Compensation -- Cashless exercise / same-day sale"

A cashless exercise is a way for an option holder to convert stock options into actual shares without paying the purchase price in cash; instead they immediately give up a portion of the newly issued shares to cover the cost and any withholding taxes. Investors care because this process increases the number of shares available and can slightly dilute existing holdings, while also signaling how insiders or employees are realizing compensation without needing cash — similar to paying for a purchase by handing over part of what you just bought.

same-day sale financial

"Compensation -- Cashless exercise / same-day sale"

restricted or control securities regulatory

"notice of proposed sale of restricted or control securities"

FAQ

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

What does this Form 144 filing indicate for AXSM?

The filing indicates a holder intends to sell 4,660 shares of AXSM common stock, worth about $979,205.80, via a broker on or after August 6, 2026, using a cashless exercise/same-day sale of stock options.

How many AXSM shares are planned to be sold under this notice?

The notice covers a proposed sale of 4,660 shares of AXSM common stock. These shares were originally acquired on March 15, 2017 as compensation through stock options and are to be sold in a cashless exercise transaction.

What is the approximate market value of the AXSM shares to be sold?

The proposed sale covers AXSM common stock with an aggregate market value of about $979,205.80. This value relates to 4,660 shares to be sold through Goldman Sachs & Co. LLC on NASD.

How many AXSM shares were outstanding as referenced in this notice?

The notice references approximately 51,459,766 shares of AXSM common stock outstanding. This figure provides context for the planned sale of 4,660 shares, which represents only a small portion of the referenced outstanding shares.

What prior AXSM stock sales by Herriot Tabuteau are disclosed?

The filing lists several AXSM stock sales by Herriot Tabuteau in the last three months, including blocks of about 24,833–24,835 shares on June 9, July 1, and August 5, 2026, with aggregate values between roughly $4.26 million and $6.02 million.

How were the AXSM shares to be sold originally acquired?

The 4,660 AXSM shares covered by this notice were acquired on March 15, 2017 as compensation via stock options. The planned transaction is described as “Compensation -- Cashless exercise / same-day sale.”

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

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Available on EDGAR 08/06/2026 - 05:10 PM Accepted by SEC EDGAR 08/06/2026 - 05:09 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	0001219927
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	Axsome Therapeutics, Inc.
SEC File Number	001-37635
Address of Issuer	One World Trade Center 29th Floor New York NEW YORK 10007
Phone	1-212-332-3241
Name of Person for Whose Account the Securities are To Be Sold	Herriot Tabuteau
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 Stock	Goldman Sachs & Co. LLC 200 West Street New York NY 10282	4660	979205.8	51459766	08/06/2026	NASD

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	03/15/2017	Acquired as compensation -- Stock Options	The Issuer			4660	03/15/2017	Compensation -- Cashless exercise / same-day sale

* 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
Herriot Tabuteau One World Trade Center 29th Floor New York NY 10007	Common Stock	06/09/2026	24835	5950195.3
Herriot Tabuteau One World Trade Center 29th Floor New York NY 10007	Common Stock	08/05/2026	20171	4256601.41
Herriot Tabuteau One World Trade Center 29th Floor New York NY 10007	Common Stock	06/09/2026	24835	6020552.85
Herriot Tabuteau One World Trade Center 29th Floor New York NY 10007	Common Stock	07/01/2026	24833	6002352.15
Herriot Tabuteau One World Trade Center 29th Floor New York NY 10007	Common Stock	08/05/2026	24833	5284770.33
Herriot Tabuteau One World Trade Center 29th Floor New York NY 10007	Common Stock	07/01/2026	24833	5929877.04

144: Remarks and Signature

Remarks	The sales of shares set forth herein are made in connection with a selling plan dated 3/10/2026, that is intended to comply with Rule 10b5-1(c).
Date of Notice	08/06/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/10/2026
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	Goldman Sachs & Co. LLC on behalf of Herriot Tabuteau
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)