LFST

SEC source: 0000899243-22-022403 · doc4.xml · nonDerivative · entry 1

Patel-Dunn Anisha · CIK 0001864311 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 94,669

F1 · kind: Required number of shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was made to satisfy tax withholding obligations through a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

SEC source: 0000899243-22-022401 · doc4.xml · nonDerivative · entry 1

Qureshi Danish J. · CIK 0001864331 · Chief Growth Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,344,065

F1 · kind: Required number of shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was made to satisfy tax withholding obligations through a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

SEC source: 0000899243-22-022399 · doc4.xml · nonDerivative · entry 1

Mullins Kevin Michael · CIK 0001864233 · Chief Development Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,667,060

F1 · kind: Required number of shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was made to satisfy tax withholding obligations through a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

SEC source: 0000899243-22-022393 · doc4.xml · nonDerivative · entry 1

Lester Michael K. · CIK 0001864249 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,148,931

F1 · kind: Required number of shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was made to satisfy tax withholding obligations through a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

SEC source: 0000899243-22-022392 · doc4.xml · nonDerivative · entry 2

Gouk Warren · CIK 0001865503 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,265,330

SEC source: 0000899243-22-023093 · doc4a.xml · nonDerivative · entry 1

Gouk Warren · CIK 0001865503 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,270,330

SEC source: 0000899243-22-023602 · doc4a.xml · nonDerivative · entry 1

Gouk Warren · CIK 0001865503 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,265,330

SEC source: 0000899243-22-015667 · doc4.xml · nonDerivative · entry 1

Gouk Warren · CIK 0001865503 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,342,809

F1 · shares: Includes 76,446 restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0000899243-22-015666 · doc4.xml · nonDerivative · entry 1

Pardo Ryan · CIK 0001865531 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 557,058

F1 · shares: Includes 95,311 restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0000899243-22-015670 · doc4.xml · nonDerivative · entry 1

Qureshi Danish J. · CIK 0001864331 · Chief Growth Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,429,944

F1 · shares: Includes 111,665 restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0000899243-22-015679 · doc4.xml · nonDerivative · entry 1

Gorcyca Felicia · CIK 0001865529 · Chief People Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 912,220

F1 · shares: Includes 76,446 restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0000899243-22-015680 · doc4.xml · nonDerivative · entry 1

Patel-Dunn Anisha · CIK 0001864311 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 98,132

F1 · shares: Includes 76,446 restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0000899243-22-015681 · doc4.xml · nonDerivative · entry 1

Booth Gwen H. · CIK 0001864862 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,172,435

F1 · shares: Includes 76,457 restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0000899243-22-015669 · doc4.xml · nonDerivative · entry 1

Mullins Kevin Michael · CIK 0001864233 · Chief Development Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,745,918

F1 · shares: Includes 76,446 restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0000899243-22-015672 · doc4.xml · nonDerivative · entry 1

Lester Michael K. · CIK 0001864249 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,477,546

F1 · shares: Includes 289,080 restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0000899243-22-015676 · doc4.xml · nonDerivative · entry 1

Pantaleoni Pablo · CIK 0001864258 · Chief Digital Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 935,260

F1 · shares: Includes 98,084 restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0000899243-22-015677 · doc4.xml · nonDerivative · entry 1

Bruff Jesse Michael · CIK 0001795741 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,928,369

F1 · shares: Includes 111,665 restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0000899243-22-015505 · doc4.xml · nonDerivative · entry 1

Mullins Kevin Michael · CIK 0001864233 · Chief Development Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,669,472

F1 · kind: The reported transactions were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $10.15 to $10.99, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0000899243-22-011252 · doc4.xml · nonDerivative · entry 2

Bruff Jesse Michael · CIK 0001795741 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,816,704

F1 · kind: Required number of shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was made to satisfy tax withholding obligations through a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

SEC source: 0000899243-22-011252 · doc4.xml · nonDerivative · entry 1

Bruff Jesse Michael · CIK 0001795741 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,816,790

F1 · kind: Required number of shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was made to satisfy tax withholding obligations through a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

SEC source: 0000899243-22-000561 · doc4.xml · nonDerivative · entry 1

Bruff Jesse Michael · CIK 0001795741 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,835,191

F1 · kind: Shares were withheld by the Issuer to satisfy tax withholding obligations related to vesting of restricted stock units.

SEC source: 0000899243-21-034072 · doc4.xml · nonDerivative · entry 1

Verma Seema · CIK 0001879702 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 79,543

F1 · shares: Includes 79,543 restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001179110-21-007117 · edgar.xml · nonDerivative · entry 1

SUMMIT PARTNERS L P · CIK 0000830588 · Manager of GP of 10% owner

SUMMIT MASTER COMPANY, LLC · CIK 0001627278 · Manager of Manager of 10% owne

SUMMIT PARTNERS ENTREPRENEUR ADVISORS GP II, LLC · CIK 0001846778 · GP of 10% owner

SUMMIT PARTNERS GE IX, L.P. · CIK 0001846731 · GP of 10% owner

SUMMIT PARTNERS GE IX, LLC · CIK 0001846688 · GP of 10% owner

Summit Investors Management, LLC · CIK 0001507545 · Manager and GP of 10% Owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes.

Disclosed balance after: 45,734,703

F1 · shares: Represents 698,520 shares sold by Summit Partners Growth Equity Fund IX-A, L.P., 436,146 shares sold by Summit Partners Growth Equity Fund IX-B, L.P., 4,876 shares sold by Summit Investors GE IX/VC IV, LLC, 652 shares sold by Summit Partners Entrepreneur Advisors Fund II, L.P., and 510 shares sold by Summit Investors GE IX/VC IV (UK), L.P.

F2 · balance_after: Represents 28,006,042 shares held by Summit Partners Growth Equity Fund IX-A, L.P., 17,486,585 shares held by Summit Partners Growth Equity Fund IX-B, L.P., 195,492 shares held by Summit Investors GE IX/VC IV, LLC, 26,134 shares held by Summit Partners Entrepreneur Advisors Fund II, L.P., and 20,450 shares held by Summit Investors GE IX/VC IV (UK), L.P.

F3 · ownership.nature: Summit Partners, L.P. is the managing member of Summit Partners GE IX, LLC, which is general partner of Summit Partners GE IX, LP, which is the general partner of Summit Partners Growth Equity Fund IX-A, L.P. and Summit Partners Growth Equity Fund IX-B, L.P. Summit Master Company, LLC is (i) the sole member of Summit Partners Entrepreneur Advisors GP II, LLC, which is the general partner of Summit Partners Entrepreneur Advisors Fund II, L.P. and (ii) the general partner of Summit Partners L.P., which is the manager of Summit Investors Management, LLC, which is the manager of Summit Investors GE IX/VC IV, LLC, and the general partner of Summit Investors GE IX/VC IV (UK), L.P.

F4 · ownership.nature: Summit Master Company, LLC, as the sole member of Summit Partners Entrepreneur Advisors GP II, LLC and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to LifeStance Health Group, Inc. Summit Partners, L.P., through a three-person investment committee, currently composed of Peter Y. Chung, Mark A. deLaar and Craig D. Frances, has voting and dispositive authority over the shares held by each of these entities and therefore beneficially owns such shares. Each of the Summit Funds, Mr. Chung, Mr. deLaar and Dr. Frances disclaim disclaims beneficial ownership of the shares, except, in each case, to the extent of such person's or entity's pecuniary interest therein.

SEC source: 0001387131-21-006996 · lfst-form4_062921.xml · nonDerivative · entry 1

TPG Group Holdings (SBS) Advisors, Inc. · CIK 0001495741 · 10% owner

BONDERMAN DAVID · CIK 0000860866 · 10% owner

COULTER JAMES G · CIK 0001099776 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 175,284,635

F1 · ownership.nature: David Bonderman and James G. Coulter are sole shareholders of TPG Group Holdings (SBS) Advisors, Inc. (together with Messrs. Bonderman and Coulter, the "Reporting Persons"), which is the sole member of TPG Group Holdings (SBS) Advisors, LLC, which is the general partner of TPG Group Holdings (SBS), L.P., which is the sole member of TPG Holdings I-A, LLC, which is the general partner of TPG Holdings I, L.P., which is the sole member of TPG GenPar VIII Advisors, LLC, which is the general partner of TPG GenPar VIII, L.P., which is the general partner of TPG VIII Lynnwood Holdings Aggregation, L.P. ("TPG VIII Lynnwood"), which directly holds 175,284,635 shares of Common Stock of LifeStance Health Group, Inc.

F2 · ownership.nature: Because of the relationship between the Reporting Persons and TPG VIII Lynnwood, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of the greater of their respective direct or indirect pecuniary interests in the profits or capital accounts of TPG VIII Lynnwood. Each of TPG VIII Lynnwood and each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of TPG VIII Lynnwood's or such Reporting Person's pecuniary interest therein, if any.

F3 · ownership.nature: Pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), this filing shall not be deemed an admission that the Reporting Persons are, for purposes of Section 16 of the Exchange Act or otherwise, the beneficial owners of any equity securities in excess of their respective pecuniary interests.

SEC source: 0000899243-21-026587 · doc4.xml · nonDerivative · entry 1

Silversmith Partners I GP, LLC · CIK 0001866164 · Member of 10% Group

Silversmith Partners I GP, L.P. · CIK 0001866163 · Member of 10% Group

Silversmith Capital Partners I-A, L.P. · CIK 0001649052 · Member of 10% Group

Silversmith Capital Partners I-B, L.P. · CIK 0001649051 · Member of 10% Group

Silversmith Capital Partners I-C, L.P. · CIK 0001649053 · Member of 10% Group

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 19,541,192

F1 · ownership.nature: Silversmith Partners I GP, LLC is the general partner of Silversmith Partners I GP, L.P., which is the general partner of Silversmith Capital Partners I-A, L.P., Silversmith Capital Partners I-B, L.P. and Silversmith Capital Partners I-C, L.P. (collectively, the "Silversmith Entities"). Silversmith Capital Partners I-A, L.P. holds 13,445,426 shares of common stock of the Issuer, Silversmith Capital Partners I-B, L.P. holds 4,863,586 shares of common stock of the Issuer and Silversmith Capital Partners I-C, L.P. holds 1,232,180 shares of common stock of the Issuer.

F2 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all of the securities that are or may be beneficially owned by the Silversmith Entities or any of their affiliates, except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the Shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F3 · ownership.nature: Silversmith Capital Partners I-A, L.P., Silversmith Capital Partners I-B, L.P. and Silversmith Capital Partners I-C, L.P. have entered into a Stockholders Agreement with certain persons who are owners of more than 10% of the Issuer's outstanding common stock and, as a result, the Silversmith Entities may be deemed a member of a "group" (as such term is used under Section 13(d) of the Securities Exchange Act of 1934, as amended) with such persons.

SEC source: 0000899243-21-026588 · doc4.xml · nonDerivative · entry 1

CRISAN JEFFREY · CIK 0001407544 · Director · Member of 10% Group

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 19,541,192

F1 · ownership.nature: Jeffrey Crisan is a Manager of Silversmith Partners I GP, LLC. Silversmith Partners I GP, LLC is the general partner of Silversmith Partners I GP, L.P., which is the general partner of Silversmith Capital Partners I-A, L.P., Silversmith Capital Partners I-B, L.P. and Silversmith Capital Partners I-C, L.P. (collectively, the "Silversmith Entities"). Following the transactions reported herein, Silversmith Capital Partners I-A, L.P. holds 13,445,426 of the Issuer, Silversmith Capital Partners I-B, L.P. holds 4,863,586 shares of common stock of the Issuer, and Silversmith Capital Partners I-C, L.P. holds 1,232,180 shares of common stock of the Issuer.

F2 · ownership.nature: As a result of the relationships described above, Mr. Crisan may be deemed to share voting and dispositive power with respect to the shares held by the Silversmith Entities. Mr. Crisan disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.

SEC source: 0001179110-21-007118 · edgar.xml · nonDerivative · entry 1

Summit Partners Growth Equity Fund IX-A, L.P. · CIK 0001634415 · 10% owner

Summit Partners Growth Equity Fund IX-B, L.P. · CIK 0001634426 · 10% owner

SUMMIT INVESTORS GE IX/VC IV (UK), L.P. · CIK 0001846709 · 10% owner

SUMMIT INVESTORS GE IX/VC IV, LLC · CIK 0001654074 · 10% owner

Summit Partners Entrepreneur Advisors Fund II, L.P. · CIK 0001660981 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,734,703

F1 · shares: Represents 698,520 shares sold by Summit Partners Growth Equity Fund IX-A, L.P., 436,146 shares sold by Summit Partners Growth Equity Fund IX-B, L.P., 4,876 shares sold by Summit Investors GE IX/VC IV, LLC, 652 shares sold by Summit Partners Entrepreneur Advisors Fund II, L.P., and 510 shares sold by Summit Investors GE IX/VC IV (UK), L.P.

F2 · balance_after: Represents 28,006,042 shares held by Summit Partners Growth Equity Fund IX-A, L.P., 17,486,585 shares held by Summit Partners Growth Equity Fund IX-B, L.P., 195,492 shares held by Summit Investors GE IX/VC IV, LLC, 26,134 shares held by Summit Partners Entrepreneur Advisors Fund II, L.P., and 20,450 shares held by Summit Investors GE IX/VC IV (UK), L.P.

F3 · ownership.direct: Summit Partners, L.P. is the managing member of Summit Partners GE IX, LLC, which is general partner of Summit Partners GE IX, LP, which is the general partner of Summit Partners Growth Equity Fund IX-A, L.P. and Summit Partners Growth Equity Fund IX-B, L.P. Summit Master Company, LLC is (i) the sole member of Summit Partners Entrepreneur Advisors GP II, LLC, which is the general partner of Summit Partners Entrepreneur Advisors Fund II, L.P. and (ii) the general partner of Summit Partners L.P., which is the manager of Summit Investors Management, LLC, which is the manager of Summit Investors GE IX/VC IV, LLC, and the general partner of Summit Investors GE IX/VC IV (UK), L.P.

F4 · ownership.direct: Summit Master Company, LLC, as the sole member of Summit Partners Entrepreneur Advisors GP II, LLC and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to LifeStance Health Group, Inc. Summit Partners, L.P., through a three-person investment committee, currently composed of Peter Y. Chung, Mark A. deLaar and Craig D. Frances, has voting and dispositive authority over the shares held by each of these entities and therefore beneficially owns such shares. Each of the Summit Funds, Mr. Chung, Mr. deLaar and Dr. Frances disclaim disclaims beneficial ownership of the shares, except, in each case, to the extent of such person's or entity's pecuniary interest therein.

SEC source: 0001179110-21-007116 · edgar.xml · nonDerivative · entry 1

BLACK DARREN M. · CIK 0001843861 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes.

Disclosed balance after: 45,734,703

F1 · shares: Represents 698,520 shares sold by Summit Partners Growth Equity Fund IX-A, L.P., 436,146 shares sold by Summit Partners Growth Equity Fund IX-B, L.P., 4,876 shares sold by Summit Investors GE IX/VC IV, LLC, 652 shares sold by Summit Partners Entrepreneur Advisors Fund II, L.P., and 510 shares sold by Summit Investors GE IX/VC IV (UK), L.P.

F2 · balance_after: Represents 28,006,042 shares held by Summit Partners Growth Equity Fund IX-A, L.P., 17,486,585 shares held by Summit Partners Growth Equity Fund IX-B, L.P., 195,492 shares held by Summit Investors GE IX/VC IV, LLC, 26,134 shares held by Summit Partners Entrepreneur Advisors Fund II, L.P., and 20,450 shares held by Summit Investors GE IX/VC IV (UK), L.P.

F3 · ownership.nature: Darren Black is a Managing Director and Member of Summit Master Company, LLC, the general partner of Summit Partners, L.P. Summit Partners, L.P. is the managing member of Summit Partners GE IX, LLC, which is general partner of Summit Partners GE IX, LP, which is the general partner of Summit Partners Growth Equity Fund IX-A, L.P. and Summit Partners Growth Equity Fund IX-B, L.P. Summit Master Company, LLC is (i) the sole member of Summit Partners Entrepreneur Advisors GP II, LLC, which is the general partner of Summit Partners Entrepreneur Advisors Fund II, L.P. and (ii) the general partner of Summit Partners L.P., which is the manager of Summit Investors Management, LLC, which is the manager of Summit Investors GE IX/VC IV, LLC, and the general partner of Summit Investors GE IX/VC IV (UK), L.P.

F4 · ownership.nature: Summit Master Company, LLC, as the sole member of Summit Partners Entrepreneur Advisors GP II, LLC and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to LifeStance Health Group, Inc. Summit Partners, L.P., through a three-person investment committee, currently composed of Peter Y. Chung, Mark A. deLaar and Craig D. Frances, has voting and dispositive authority over the shares held by each of these entities and therefore beneficially owns such shares. Each of the Summit Funds, Mr. Chung, Mr. deLaar and Dr. Frances disclaim disclaims beneficial ownership of the shares, except, in each case, to the extent of such person's or entity's pecuniary interest therein.

SEC source: 0001179110-21-006788 · edgar.xml · nonDerivative · entry 1

SUMMIT PARTNERS L P · CIK 0000830588 · Manager of GP of 10% owner

SUMMIT MASTER COMPANY, LLC · CIK 0001627278 · Manager of Manager of 10% owne

SUMMIT PARTNERS ENTREPRENEUR ADVISORS GP II, LLC · CIK 0001846778 · GP of 10% owner

SUMMIT PARTNERS GE IX, L.P. · CIK 0001846731 · GP of 10% owner

SUMMIT PARTNERS GE IX, LLC · CIK 0001846688 · GP of 10% owner

Summit Investors Management, LLC · CIK 0001507545 · Manager and GP of 10% Owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes.

Disclosed balance after: 46,875,407

F1 · shares: Represents 838,224 shares sold by Summit Partners Growth Equity Fund IX-A, L.P., 523,375 shares sold by Summit Partners Growth Equity Fund IX-B, L.P., 5,851 shares sold by Summit Investors GE IX/VC IV, LLC, 782 shares sold by Summit Partners Entrepreneur Advisors Fund II, L.P., and 612 shares sold by Summit Investors GE IX/VC IV (UK), L.P.

F2 · balance_after: Represents 28,704,562 shares held by Summit Partners Growth Equity Fund IX-A, L.P., 17,922,731shares held by Summit Partners Growth Equity Fund IX-B, L.P., 200,368 shares held by Summit Investors GE IX/VC IV, LLC, 26,786 shares held by Summit Partners Entrepreneur Advisors Fund II, L.P., and 20,960 shares held by Summit Investors GE IX/VC IV (UK), L.P.

F3 · ownership.nature: Summit Partners, L.P. is the managing member of Summit Partners GE IX, LLC, which is general partner of Summit Partners GE IX, LP, which is the general partner of Summit Partners Growth Equity Fund IX-A, L.P. and Summit Partners Growth Equity Fund IX-B, L.P. Summit Master Company, LLC is (i) the sole member of Summit Partners Entrepreneur Advisors GP II, LLC, which is the general partner of Summit Partners Entrepreneur Advisors Fund II, L.P. and (ii) the general partner of Summit Partners L.P., which is the manager of Summit Investors Management, LLC, which is the manager of Summit Investors GE IX/VC IV, LLC, and the general partner of Summit Investors GE IX/VC IV (UK), L.P.

F4 · ownership.nature: Summit Master Company, LLC, as the sole member of Summit Partners Entrepreneur Advisors GP II, LLC and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to LifeStance Health Group, Inc. Summit Partners, L.P., through a three-person investment committee, currently composed of Peter Y. Chung, Mark A. deLaar and Craig D. Frances, has voting and dispositive authority over the shares held by each of these entities and therefore beneficially owns such shares. Each of the Summit Funds, Mr. Chung, Mr. deLaar and Dr. Frances disclaim disclaims beneficial ownership of the shares, except, in each case, to the extent of such person's or entity's pecuniary interest therein.

SEC source: 0001387131-21-006614 · form4.xml · nonDerivative · entry 1

TPG Group Holdings (SBS) Advisors, Inc. · CIK 0001495741 · 10% owner

BONDERMAN DAVID · CIK 0000860866 · 10% owner

COULTER JAMES G · CIK 0001099776 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 179,656,540

F1 · ownership.nature: David Bonderman and James G. Coulter are sole shareholders of TPG Group Holdings (SBS) Advisors, Inc. (together with Messrs. Bonderman and Coulter, the "Reporting Persons"), which is the sole member of TPG Group Holdings (SBS) Advisors, LLC, which is the general partner of TPG Group Holdings (SBS), L.P., which is the sole member of TPG Holdings I-A, LLC, which is the general partner of TPG Holdings I, L.P., which is the sole member of TPG GenPar VIII Advisors, LLC, which is the general partner of TPG GenPar VIII, L.P., which is the general partner of TPG VIII Lynnwood Holdings Aggregation, L.P. ("TPG VIII Lynnwood"), which directly holds 179,656,540 shares of Common Stock of LifeStance Health Group, Inc.

F2 · ownership.nature: Because of the relationship between the Reporting Persons and TPG VIII Lynnwood, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of the greater of their respective direct or indirect pecuniary interests in the profits or capital accounts of TPG VIII Lynnwood. Each of TPG VIII Lynnwood and each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of TPG VIII Lynnwood's or such Reporting Person's pecuniary interest therein, if any.

F3 · ownership.nature: Pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), this filing shall not be deemed an admission that the Reporting Persons are, for purposes of Section 16 of the Exchange Act or otherwise, the beneficial owners of any equity securities in excess of their respective pecuniary interests.

SEC source: 0000899243-21-024155 · doc4.xml · nonDerivative · entry 1

Silversmith Partners I GP, LLC · CIK 0001866164 · 10% owner

Silversmith Partners I GP, L.P. · CIK 0001866163 · 10% owner

Silversmith Capital Partners I-A, L.P. · CIK 0001649052 · 10% owner

Silversmith Capital Partners I-B, L.P. · CIK 0001649051 · 10% owner

Silversmith Capital Partners I-C, L.P. · CIK 0001649053 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 20,028,583

F1 · ownership.nature: Silversmith Partners I GP, LLC is the general partner of Silversmith Partners I GP, L.P., which is the general partner of Silversmith Capital Partners I-A, L.P., Silversmith Capital Partners I-B, L.P. and Silversmith Capital Partners I-C, L.P. (collectively, the "Silversmith Entities"). Silversmith Capital Partners I-A, L.P. holds 13,780,778 shares of common stock of the Issuer, Silversmith Capital Partners I-B, L.P. holds 4,984,892 shares of common stock of the Issuer and Silversmith Capital Partners I-C, L.P. holds 1,262,913 shares of common stock of the Issuer.

F2 · ownership.nature: Each Reporting Person disclaims beneficial ownership of all of the securities that are or may be beneficially owned by the Silversmith Entities or any of their affiliates, except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the Shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F3 · ownership.nature: Silversmith Capital Partners I-A, L.P., Silversmith Capital Partners I-B, L.P. and Silversmith Capital Partners I-C, L.P. have entered into a Stockholders Agreement with certain persons who are owners of more than 10% of the Issuer's outstanding common stock and, as a result, the Silversmith Entities may be deemed a member of a "group" (as such term is used under Section 13(d) of the Securities Exchange Act of 1934, as amended) with such persons.

SEC source: 0000899243-21-024158 · doc4.xml · nonDerivative · entry 2

CRISAN JEFFREY · CIK 0001407544 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 20,028,583

F2 · ownership.nature: Jeffrey Crisan is a Manager of Silversmith Partners I GP, LLC. Silversmith Partners I GP, LLC is the general partner of Silversmith Partners I GP, L.P., which is the general partner of Silversmith Capital Partners I-A, L.P., Silversmith Capital Partners I-B, L.P. and Silversmith Capital Partners I-C, L.P. (collectively, the "Silversmith Entities"). Following the transactions reported herein, Silversmith Capital Partners I-A, L.P. holds 13,780,778 of the Issuer, Silversmith Capital Partners I-B, L.P. holds 4,984,892 shares of common stock of the Issuer, and Silversmith Capital Partners I-C, L.P. holds 1,262,913 shares of common stock of the Issuer.

F3 · ownership.nature: As a result of the relationships described above, Mr. Crisan may be deemed to share voting and dispositive power with respect to the shares held by the Silversmith Entities. Mr. Crisan disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.

SEC source: 0001179110-21-006787 · edgar.xml · nonDerivative · entry 1

Summit Partners Growth Equity Fund IX-A, L.P. · CIK 0001634415 · 10% owner

Summit Partners Growth Equity Fund IX-B, L.P. · CIK 0001634426 · 10% owner

SUMMIT INVESTORS GE IX/VC IV (UK), L.P. · CIK 0001846709 · 10% owner

SUMMIT INVESTORS GE IX/VC IV, LLC · CIK 0001654074 · 10% owner

Summit Partners Entrepreneur Advisors Fund II, L.P. · CIK 0001660981 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,875,407

F1 · shares: Represents 838,224 shares sold by Summit Partners Growth Equity Fund IX-A, L.P., 523,375 shares sold by Summit Partners Growth Equity Fund IX-B, L.P., 5,851 shares sold by Summit Investors GE IX/VC IV, LLC, 782 shares sold by Summit Partners Entrepreneur Advisors Fund II, L.P., and 612 shares sold by Summit Investors GE IX/VC IV (UK), L.P.

F2 · balance_after: Represents 28,704,562 shares held by Summit Partners Growth Equity Fund IX-A, L.P., 17,922,731 shares held by Summit Partners Growth Equity Fund IX-B, L.P., 200,368 shares held by Summit Investors GE IX/VC IV, LLC, 26,786 shares held by Summit Partners Entrepreneur Advisors Fund II, L.P., and 20,960 shares held by Summit Investors GE IX/VC IV (UK), L.P.

F3 · ownership.direct: Summit Partners, L.P. is the managing member of Summit Partners GE IX, LLC, which is general partner of Summit Partners GE IX, LP, which is the general partner of Summit Partners Growth Equity Fund IX-A, L.P. and Summit Partners Growth Equity Fund IX-B, L.P. Summit Master Company, LLC is (i) the sole member of Summit Partners Entrepreneur Advisors GP II, LLC, which is the general partner of Summit Partners Entrepreneur Advisors Fund II, L.P. and (ii) the general partner of Summit Partners L.P., which is the manager of Summit Investors Management, LLC, which is the manager of Summit Investors GE IX/VC IV, LLC, and the general partner of Summit Investors GE IX/VC IV (UK), L.P.

F4 · ownership.direct: Summit Master Company, LLC, as the sole member of Summit Partners Entrepreneur Advisors GP II, LLC and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to LifeStance Health Group, Inc. Summit Partners, L.P., through a three-person investment committee, currently composed of Peter Y. Chung, Mark A. deLaar and Craig D. Frances, has voting and dispositive authority over the shares held by each of these entities and therefore beneficially owns such shares. Each of the Summit Funds, Mr. Chung, Mr. deLaar and Dr. Frances disclaim disclaims beneficial ownership of the shares, except, in each case, to the extent of such person's or entity's pecuniary interest therein.

SEC source: 0001179110-21-006792 · edgar.xml · nonDerivative · entry 2

BLACK DARREN M. · CIK 0001843861 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes.

Disclosed balance after: 46,875,407

F3 · shares: Represents 838,224 shares sold by Summit Partners Growth Equity Fund IX-A, L.P., 523,375 shares sold by Summit Partners Growth Equity Fund IX-B, L.P., 5,851 shares sold by Summit Investors GE IX/VC IV, LLC, 782 shares sold by Summit Partners Entrepreneur Advisors Fund II, L.P., and 612 shares sold by Summit Investors GE IX/VC IV (UK), L.P.

F4 · balance_after: Represents 28,704,562 shares held by Summit Partners Growth Equity Fund IX-A, L.P., 17,922,731 shares held by Summit Partners Growth Equity Fund IX-B, L.P., 200,368 shares held by Summit Investors GE IX/VC IV, LLC, 26,786 shares held by Summit Partners Entrepreneur Advisors Fund II, L.P., and 20,960 shares held by Summit Investors GE IX/VC IV (UK), L.P.

F5 · ownership.nature: Darren Black is a Managing Director and Member of Summit Master Company, LLC, the general partner of Summit Partners, L.P. Summit Partners, L.P. is the managing member of Summit Partners GE IX, LLC, which is general partner of Summit Partners GE IX, LP, which is the general partner of Summit Partners Growth Equity Fund IX-A, L.P. and Summit Partners Growth Equity Fund IX-B, L.P. Summit Master Company, LLC is (i) the sole member of Summit Partners Entrepreneur Advisors GP II, LLC, which is the general partner of Summit Partners Entrepreneur Advisors Fund II, L.P. and (ii) the general partner of Summit Partners L.P., which is the manager of Summit Investors Management, LLC, which is the manager of Summit Investors GE IX/VC IV, LLC, and the general partner of Summit Investors GE IX/VC IV (UK), L.P.

F6 · ownership.nature: Summit Master Company, LLC, as the sole member of Summit Partners Entrepreneur Advisors GP II, LLC and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to LifeStance Health Group, Inc. Summit Partners, L.P., through a three-person investment committee, currently composed of Peter Y. Chung, Mark A. deLaar and Craig D. Frances, has voting and dispositive authority over the shares held by each of these entities and therefore beneficially owns such shares. Each of the Summit Funds, Mr. Chung, Mr. deLaar and Dr. Frances disclaim disclaims beneficial ownership of the shares, except, in each case, to the extent of such person's or entity's pecuniary interest therein.

SEC source: 0000899243-21-024158 · doc4.xml · nonDerivative · entry 1

CRISAN JEFFREY · CIK 0001407544 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 20,613,453

F1 · kind: Shares received in the Organizational Transactions described in the prospectus dated June 9, 2021 relating to the Issuer's initial public offering, filed with the Securities and Exchange Commission on June 11, 2021, in exchange for partnership interests of LifeStance TopCo, L.P.

F1 · price: Shares received in the Organizational Transactions described in the prospectus dated June 9, 2021 relating to the Issuer's initial public offering, filed with the Securities and Exchange Commission on June 11, 2021, in exchange for partnership interests of LifeStance TopCo, L.P.

F2 · ownership.nature: Jeffrey Crisan is a Manager of Silversmith Partners I GP, LLC. Silversmith Partners I GP, LLC is the general partner of Silversmith Partners I GP, L.P., which is the general partner of Silversmith Capital Partners I-A, L.P., Silversmith Capital Partners I-B, L.P. and Silversmith Capital Partners I-C, L.P. (collectively, the "Silversmith Entities"). Following the transactions reported herein, Silversmith Capital Partners I-A, L.P. holds 13,780,778 of the Issuer, Silversmith Capital Partners I-B, L.P. holds 4,984,892 shares of common stock of the Issuer, and Silversmith Capital Partners I-C, L.P. holds 1,262,913 shares of common stock of the Issuer.

F3 · ownership.nature: As a result of the relationships described above, Mr. Crisan may be deemed to share voting and dispositive power with respect to the shares held by the Silversmith Entities. Mr. Crisan disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.

SEC source: 0001179110-21-006792 · edgar.xml · nonDerivative · entry 1

BLACK DARREN M. · CIK 0001843861 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes.

Disclosed balance after: 48,244,251

F1 · kind: Shares received in the Organizational Transactions described in the prospectus dated June 9, 2021 relating to the Issuer's initial public offering, filed with the Securities and Exchange Commission on June 11, 2021, in exchange for partnership interests of LifeStance TopCo, L.P.

F2 · shares: Represents 29,542,786 shares held by Summit Partners Growth Equity Fund IX-A, L.P., 18,446,106 shares held by Summit Partners Growth Equity Fund IX-B, L.P., 206,219 shares held by Summit Investors GE IX/VC IV, LLC, 27,568 shares held by Summit Partners Entrepreneur Advisors Fund II, L.P., and 21,572 shares held by Summit Investors GE IX/VC IV (UK), L.P.

F1 · price: Shares received in the Organizational Transactions described in the prospectus dated June 9, 2021 relating to the Issuer's initial public offering, filed with the Securities and Exchange Commission on June 11, 2021, in exchange for partnership interests of LifeStance TopCo, L.P.

F2 · balance_after: Represents 29,542,786 shares held by Summit Partners Growth Equity Fund IX-A, L.P., 18,446,106 shares held by Summit Partners Growth Equity Fund IX-B, L.P., 206,219 shares held by Summit Investors GE IX/VC IV, LLC, 27,568 shares held by Summit Partners Entrepreneur Advisors Fund II, L.P., and 21,572 shares held by Summit Investors GE IX/VC IV (UK), L.P.

F5 · ownership.nature: Darren Black is a Managing Director and Member of Summit Master Company, LLC, the general partner of Summit Partners, L.P. Summit Partners, L.P. is the managing member of Summit Partners GE IX, LLC, which is general partner of Summit Partners GE IX, LP, which is the general partner of Summit Partners Growth Equity Fund IX-A, L.P. and Summit Partners Growth Equity Fund IX-B, L.P. Summit Master Company, LLC is (i) the sole member of Summit Partners Entrepreneur Advisors GP II, LLC, which is the general partner of Summit Partners Entrepreneur Advisors Fund II, L.P. and (ii) the general partner of Summit Partners L.P., which is the manager of Summit Investors Management, LLC, which is the manager of Summit Investors GE IX/VC IV, LLC, and the general partner of Summit Investors GE IX/VC IV (UK), L.P.

F6 · ownership.nature: Summit Master Company, LLC, as the sole member of Summit Partners Entrepreneur Advisors GP II, LLC and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to LifeStance Health Group, Inc. Summit Partners, L.P., through a three-person investment committee, currently composed of Peter Y. Chung, Mark A. deLaar and Craig D. Frances, has voting and dispositive authority over the shares held by each of these entities and therefore beneficially owns such shares. Each of the Summit Funds, Mr. Chung, Mr. deLaar and Dr. Frances disclaim disclaims beneficial ownership of the shares, except, in each case, to the extent of such person's or entity's pecuniary interest therein.