LifeStance holder plans Rule 144 stock sale

LifeStance Health Group Inc. received a notice of proposed resale of its common stock under Rule 144.

Rhea-AI Filing Summary

LifeStance Health Group Inc. received a notice of proposed resale of its common stock under Rule 144. A holder working with Citadel Securities LLC intends to sell up to 1,742,770 shares of LifeStance common stock on NASDAQ, with an indicated aggregate market value of $18,508,217.40.

The filing states that LifeStance had 382,055,609 shares outstanding and that the seller’s equity interests were originally acquired in pre-IPO transactions on June 10, 2021.

Key Figures

Shares to be sold: 1,742,770 shares Aggregate market value: $18,508,217.40 Shares outstanding: 382,055,609 shares +3 more

6 metrics

Shares to be sold 1,742,770 shares Proposed Rule 144 resale of LifeStance common stock

Aggregate market value $18,508,217.40 Aggregate market value of shares proposed to be sold

Shares outstanding 382,055,609 shares LifeStance common shares outstanding at time referenced

Approximate sale date 08/10/2026 Approximate date for proposed NASDAQ sales

Securities acquired pre-IPO 29,542,786 securities Equity interests acquired in pre-IPO transactions on 06/10/2021

Pre-IPO acquisition date 06/10/2021 Date equity interests in the issuer were purchased pre-IPO

Key Terms

Rule 144, aggregate market value, pre-IPO transactions, equity interests

4 terms

Rule 144 regulatory

"A notice of proposed resale of common stock was filed under 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.

aggregate market value financial

"The proposed sale has an indicated aggregate market value of $18,508,217.40."

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

pre-IPO transactions financial

"Equity interests in the issuer were purchased in pre-IPO transactions on June 10, 2021."

equity interests financial

"Equity interests in the Issuer were purchased pre-IPO."

Equity interests are an ownership stake in a company—usually represented by shares or membership units—that give the holder a claim on the business’s profits, assets and sometimes voting power. Think of it as owning one or more slices of a company’s pie: the bigger your slice, the larger your share of dividends, capital gains and influence, and the more you are affected by dilution or company losses. Investors use equity interests to measure value, control and potential returns.

FAQ

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

What does the Form 144 filing mean for LifeStance Health Group Inc. (LFST)?

The filing indicates a holder plans to resell 1,742,770 shares of LifeStance common stock under Rule 144 through Citadel Securities LLC, without the company issuing new shares or raising new capital.

How many LifeStance Health (LFST) shares are proposed to be sold?

The notice covers a proposed sale of up to 1,742,770 shares of LifeStance Health common stock, with an indicated aggregate market value of $18,508,217.40 based on the figures in the filing.

When is the proposed sale of LFST shares expected to occur?

The proposed sale is listed with an approximate sale date of August 10, 2026. This date reflects when the seller expects to begin selling the registered shares on the NASDAQ market.

How many LifeStance Health (LFST) shares were outstanding at the time of this notice?

At the time referenced, LifeStance Health had 382,055,609 shares outstanding. This figure serves as context for the relative size of the proposed 1,742,770-share resale under Rule 144.

How and when were the LFST shares being sold under Rule 144 originally acquired?

The filing states that equity interests in LifeStance Health were acquired on June 10, 2021 through pre-IPO transactions, with 29,542,786 securities acquired in that transaction according to the disclosure.

Who is the broker for the proposed LifeStance Health (LFST) share sale?

The proposed Rule 144 sale of LifeStance common stock lists Citadel Securities LLC, located at 830 Brickell Plaza, Floor 15, Miami, FL 33131, as the broker handling the transaction on NASDAQ.

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

Accepted by SEC EDGAR 08/10/2026 - 04:08 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	0001634415
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	LIFESTANCE HEALTH GROUP, INC.
SEC File Number	001-40478
Address of Issuer	4800 N. SCOTTSDALE ROAD SUITE 2500 SCOTTSDALE ARIZONA 85251
Phone	6027672100
Name of Person for Whose Account the Securities are To Be Sold	Summit Partners Growth Equity Fund IX-A, L.P.
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	Owner

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	Citadel Securities LLC 830 Brickell Plaza, Floor 15 Miami FL 33131	1742770	18508217.40	382055609	08/10/2026	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	06/10/2021	Pre-IPO Transactions	LifeStance Health Group Inc.			29542786	06/10/2021	Equity interests in the Issuer were purchased pre-IPO.

* 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
Date of Notice	08/10/2026
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	Adam H. Hennessey
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)