# EDGAR Filing Document

**Accession Number:** 0001845257
**File Stem:** 0001193125-25-186460
**Filing Date:** 2025-8
**Character Count:** 5038
**Document Hash:** 20adb454c2811b1a85dbdac22d829b47
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-186460.hdr.sgml**: 20250822

**ACCESSION NUMBER**: 0001193125-25-186460

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 12

**CONFORMED PERIOD OF REPORT**: 20250819

**ITEM INFORMATION**: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

**FILED AS OF DATE**: 20250822

**DATE AS OF CHANGE**: 20250822

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** LifeStance Health Group, Inc.
- **CENTRAL INDEX KEY:** 0001845257
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-HEALTH SERVICES [8000]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40478
- **FILM NUMBER:** 251246803

**BUSINESS ADDRESS:**
- **STREET 1:** 4800 N. SCOTTSDALE ROAD
- **STREET 2:** SUITE 2500
- **CITY:** SCOTTSDALE
- **STATE:** AZ
- **ZIP:** 85251
- **BUSINESS PHONE:** 602-767-2100

**MAIL ADDRESS:**
- **STREET 1:** 4800 N. SCOTTSDALE ROAD
- **STREET 2:** SUITE 2500
- **CITY:** SCOTTSDALE
- **STATE:** AZ
- **ZIP:** 85251

?xml version='1.0' encoding='ASCII'? 8-K

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### WASHINGTON, D.C. 20549

### FORM 8-K

#### CURRENT REPORT

#### Pursuant to Section 13 or 15(d)

#### of the Securities Exchange Act of 1934

#### Date of Report (Date of earliest event reported): August 19, 2025

## LifeStance Health Group, Inc.

#### (Exact name of Registrant as Specified in Its Charter)

---

| | | |
|:---|:---|:---|
| **Delaware** | **001-40478** | **86-1832801** |
| **(State or Other Jurisdiction**<br> **of Incorporation)** | **(Commission**<br> **File Number)** | **(IRS Employer**<br> **Identification No.)** |

---

---

| | |
|:---|:---|
| **4800 N. Scottsdale Road** |  |
| **Suite 2500** |  |
| **Scottsdale, Arizona** | **85251** |
| **(Address of Principal Executive Offices)** | **(Zip Code)** |

---

#### Registrant's Telephone Number, Including Area Code: 425 279-8500

#### (Former Name or Former Address, if Changed Since Last Report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading<br>Symbol(s)** | **Name of each exchange**<br> **on which registered** |
| Common Stock, par value $0.01 per share | LFST | The Nasdaq Stock Market LLC |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

------

---

| | |
|:---|:---|
| **Item 5.02** | **Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.**  |

---

On August 19, 2025, William Miller notified the LifeStance Health Group, Inc. (the "Company") board of directors (the "Board") of his resignation from the Board and all of its committees, effective immediately. The resignation is not a result of any disagreement between Mr. Miller and the Company.

In connection with Mr. Miller's resignation, on August 20, 2025, the Board appointed Sarah Personette as a director of the Company. In connection with her appointment, pursuant to the Company's 2021 Equity Incentive Plan, Ms. Personette received an initial award of 74,766 restricted stock units that will vest according to the terms of a time-and performance-based restricted stock unit agreement, subject to Ms. Personette's continued service on the Board.

------

#### SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | |
|:---|:---|:---|
|  | **LIFESTANCE HEALTH GROUP, INC.** | **LIFESTANCE HEALTH GROUP, INC.** |
| Date: August 22, 2025 | By: | /s/ Ryan Pardo |
|  | Name: | Ryan Pardo |
|  | Title: | Chief Legal Officer and Secretary |

---