Insider Trading Activity - SUMMIT PARTNERS L P

Real time insider trading transaction history:

Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
Shares are not adjusted for stock split.

"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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Insider Trading Transactions for SUMMIT PARTNERS L P

Common stock purchase or sale:

Transaction Date	Reported DateTime	Company	Symbol	Insider Relationship	Shares Traded	Average Price	Total Amount	Shares Owned	Filing
2025-06-04 Sale	2025-06-05 7:13 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	4,000,000	$33.35	$133,400,000	30,827,778 (Indirect)	View
2025-05-19 Sale	2025-05-20 6:25 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	4,000,000	$33	$132,000,000	34,827,778 (Indirect)	View
2025-03-14 Sale	2025-03-17 5:11 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	2,000,000	$32.44	$64,880,000	38,827,778 (Indirect)	View
2024-12-09 Sale	2024-12-11 4:57 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	2,100,000	$39.15	$82,215,000	40,827,778 (Indirect)	View
2024-11-14 Sale	2024-11-18 4:25 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	3,153,293	$36.2	$114,149,207	43,274,485 (Indirect)	View
2024-09-13 Sale	2024-09-17 4:23 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	113,561	$31.47	$3,573,765	46,427,778 (Indirect)	View
2024-09-12 Sale	2024-09-16 5:05 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	107,205	$31.33	$3,358,733	46,541,339 (Indirect)	View
2024-09-11 Sale	2024-09-13 4:01 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	2,942	$31.01	$91,231	46,648,544 (Indirect)	View
2024-09-03 Sale	2024-09-05 4:00 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	6,039	$31.53	$190,410	46,651,486 (Indirect)	View
2024-08-30 Sale	2024-09-04 5:40 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	1,300	$31.64	$41,132	46,657,525 (Indirect)	View
2024-08-29 Sale	2024-09-03 4:20 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	16,931	$31.55	$534,173	46,658,825 (Indirect)	View
2024-08-28 Sale	2024-08-30 4:01 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	27,445	$31.68	$869,458	46,675,756 (Indirect)	View
2024-08-27 Sale	2024-08-29 4:03 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	67,436	$32.29	$2,177,508	46,703,201 (Indirect)	View
2024-08-26 Sale	2024-08-28 4:13 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	90,502	$32.27	$2,920,500	46,770,637 (Indirect)	View
2024-08-23 Sale	2024-08-27 4:02 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	305,638	$32.33	$9,881,277	46,861,139 (Indirect)	View
2024-08-22 Sale	2024-08-26 5:16 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	82,499	$31.76	$2,620,168	47,166,777 (Indirect)	View
2024-08-21 Sale	2024-08-23 4:02 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	113,850	$31.76	$3,615,876	47,249,276 (Indirect)	View
2024-08-20 Sale	2024-08-22 4:06 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	135,902	$31.95	$4,342,069	47,363,126 (Indirect)	View
2024-08-16 Sale	2024-08-20 5:44 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	242,601	$31.78	$7,709,860	47,499,028 (Indirect)	View
2024-05-24 Sale	2024-05-29 4:59 pm	LifeStance Health Group Inc.	LFST	SUMMIT PARTNERS L P SUMMIT MASTER COMPANY LLC SUMMIT PARTNERS ENTREPRENEUR ADVISORS GP II LLC SUMMIT PARTNERS GE IX L.P. SUMMIT PARTNERS GE IX LLC Summit Investors Management LLC Manager of GP of 10% owner	3,802,345	$5.89	$22,395,812	41,932,358 (Indirect)	View
2023-10-23 Sale	2023-10-23 5:10 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	1,770,318	$28.32	$50,138,592	47,741,629 (Indirect)	View
2023-09-22 Sale	2023-09-22 4:21 pm	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	4,919,165	$28.32	$139,319,607	49,511,947 (Indirect)	View
2023-03-07 Sale	2023-03-07 5:00 pm	EngageSmart Inc.	ESMT	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund VIII-A L.P. Summit Partners Growth Equity Fund VIII-B L.P. Summit Partners Entrepreneur Advisors Fund I L.P. Summit Investors I LLC Summit Investors I (UK) L.P. SUMMIT MASTER COMPANY LLC CHUNG PETER Y COLLINS SCOTT C 10% Owner	252,727	$18.19	$4,597,736	25,004,973 (Indirect)	View
2023-03-03 Sale	2023-03-03 5:26 pm	EngageSmart Inc.	ESMT	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund VIII-A L.P. Summit Partners Growth Equity Fund VIII-B L.P. Summit Partners Entrepreneur Advisors Fund I L.P. Summit Investors I LLC Summit Investors I (UK) L.P. SUMMIT MASTER COMPANY LLC CHUNG PETER Y COLLINS SCOTT C 10% Owner	1,669,052	$18.19	$30,364,229	25,257,700 (Indirect)	View
2022-09-08 Sale	2022-09-09 4:31 pm	A10 Networks Inc.	ATEN	SUMMIT PARTNERS L P SUMMIT PARTNERS GE VIII L.P. Summit Partners GE VIII LLC Summit Investors Management LLC Summit Partners Growth Equity Fund VIII-A L.P. Summit Partners Growth Equity Fund VIII-B L.P. Summit Investors I LLC Summit Investors I (UK) L.P. SUMMIT MASTER COMPANY LLC MANNION MARTIN J 10% Owner	3,500,000	$12.75	$44,625,000	5,388,206 (Indirect)	View
2021-12-07 Sale	2021-12-10 06:05 am	A10 Networks Inc.	ATEN	SUMMIT PARTNERS L P SUMMIT PARTNERS GE VIII L.P. Summit Partners GE VIII LLC Summit Investors Management LLC Summit Partners Growth Equity Fund VIII-A L.P. Summit Partners Growth Equity Fund VIII-B L.P. Summit Investors I LLC Summit Investors I (UK) L.P. MANNION MARTIN J Manager of GP of 10% owner	700,000	$15.05	$10,535,000	8,877,890 (Indirect)	View
2021-06-25 Sale	2021-06-29 5:19 pm	LifeStance Health Group Inc.	LFST	SUMMIT PARTNERS L P SUMMIT MASTER COMPANY LLC SUMMIT PARTNERS ENTREPRENEUR ADVISORS GP II LLC SUMMIT PARTNERS GE IX L.P. SUMMIT PARTNERS GE IX LLC Summit Investors Management LLC Manager of GP of 10% owner	1,140,704	$17.01	$19,403,375	45,734,703 (Indirect)	View
2021-06-14 Sale	2021-06-16 4:50 pm	LifeStance Health Group Inc.	LFST	SUMMIT PARTNERS L P SUMMIT MASTER COMPANY LLC SUMMIT PARTNERS ENTREPRENEUR ADVISORS GP II LLC SUMMIT PARTNERS GE IX L.P. SUMMIT PARTNERS GE IX LLC Summit Investors Management LLC Manager of GP of 10% owner	1,368,844	$17.01	$23,284,036	46,875,407 (Indirect)	View

Stock options: Exercise, Award, Grant, Conversion

Transaction Date	Reported DateTime	Exercisable Expiration	Company	Symnbol	Insider Relationship	Shares Traded	Conversion Price	Shares Owned	Filing
2025-06-04 Conversion	2025-06-05 7:13 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	4,000,000	$0	30,827,778 (Indirect)	View
2025-05-19 Conversion	2025-05-20 6:25 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	4,000,000	$0	34,827,778 (Indirect)	View
2025-03-14 Conversion	2025-03-17 5:11 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	2,000,000	$0	38,827,778 (Indirect)	View
2024-12-09 Conversion	2024-12-11 4:57 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	2,100,000	$0	40,827,778 (Indirect)	View
2024-11-25 Other	2024-11-25 4:05 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. 10% Owner	346,707	$0	346,707 (Indirect)	View
2024-11-14 Conversion	2024-11-18 4:25 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	3,500,000	$0	43,274,485 (Indirect)	View
2024-09-13 Conversion	2024-09-17 4:23 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	113,561	$0	46,427,778 (Indirect)	View
2024-09-12 Conversion	2024-09-16 5:05 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	107,205	$0	46,541,339 (Indirect)	View
2024-09-11 Conversion	2024-09-13 4:01 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	2,942	$0	46,648,544 (Indirect)	View
2024-09-03 Conversion	2024-09-05 4:00 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	6,039	$0	46,651,486 (Indirect)	View
2024-08-30 Conversion	2024-09-04 5:40 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	1,300	$0	46,657,525 (Indirect)	View
2024-08-29 Conversion	2024-09-03 4:20 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	16,931	$0	46,658,825 (Indirect)	View
2024-08-28 Conversion	2024-08-30 4:01 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	27,445	$0	46,675,756 (Indirect)	View
2024-08-27 Conversion	2024-08-29 4:03 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	67,436	$0	46,703,201 (Indirect)	View
2024-08-26 Conversion	2024-08-28 4:13 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	90,502	$0	46,770,637 (Indirect)	View
2024-08-23 Conversion	2024-08-27 4:02 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	305,638	$0	46,861,139 (Indirect)	View
2024-08-22 Conversion	2024-08-26 5:16 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	82,499	$0	47,166,777 (Indirect)	View
2024-08-21 Conversion	2024-08-23 4:02 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	113,850	$0	47,249,276 (Indirect)	View
2024-08-20 Conversion	2024-08-22 4:06 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	135,902	$0	47,363,126 (Indirect)	View
2024-08-16 Conversion	2024-08-20 5:44 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	242,601	$0	47,499,028 (Indirect)	View
2023-10-23 Conversion	2023-10-23 5:10 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	1,770,318	$0	47,741,629 (Indirect)	View
2023-09-22 Conversion	2023-09-22 4:21 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	4,919,165	$0	49,511,947 (Indirect)	View
Ownership	2023-09-20 4:46 pm	N/A N/A	Klaviyo Inc.	KVYO	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund IX-A L.P. Summit Partners Growth Equity Fund IX-B L.P. Summit Partners Co-Invest (Kiwi) LP SUMMIT INVESTORS GE IX/VC IV LLC SUMMIT INVESTORS GE IX/VC IV (UK) L.P. 10% Owner	0	$0	54,431,112 (Indirect)	View
2022-06-24 Option Award	2022-06-28 08:22 am	N/A N/A	A10 Networks Inc.	ATEN	SUMMIT PARTNERS L P SUMMIT PARTNERS GE VIII L.P. Summit Partners GE VIII LLC Summit Investors Management LLC Summit Partners Growth Equity Fund VIII-A L.P. Summit Partners Growth Equity Fund VIII-B L.P. Summit Investors I LLC Summit Investors I (UK) L.P. SUMMIT MASTER COMPANY LLC MANNION MARTIN J 10% Owner	10,316	$0	8,888,206 (Indirect)	View
Ownership	2021-10-28 6:32 pm	N/A N/A	Solo Brands Inc.	DTC	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund X-A L.P. Summit Partners Growth Equity Fund X-B L.P. Summit Partners Growth Equity Fund X-C L.P. SUMMIT INVESTORS X LLC SUMMIT INVESTORS X (UK) L.P. Summit Partners Subordinated Debt Fund V-A L.P. Summit Partners Subordinated Debt Fund V-B L.P. SP-SS AGGREGATOR LLC 10% Owner	0	$0	58,202,542 (Indirect)	View
Ownership	2021-09-23 5:07 pm	N/A N/A	EngageSmart Inc.	ESMT	SUMMIT PARTNERS L P Summit Partners Growth Equity Fund VIII-A L.P. Summit Partners Growth Equity Fund VIII-B L.P. Summit Partners Entrepreneur Advisors Fund I L.P. Summit Investors I LLC Summit Investors I (UK) L.P. SUMMIT MASTER COMPANY LLC CHUNG PETER Y MANNION MARTIN J 10% Owner	0	$0	26,926,752 (Indirect)	View
Ownership	2021-09-22 7:58 pm	N/A N/A	A.K.A. BRANDS HOLDING CORP.	AKA	NEW EXCELERATE L.P. SUMMIT PARTNERS L P SUMMIT PARTNERS GROWTH EQUITY FUND IX-B AIV L.P. SUMMIT PARTNERS GROWTH EQUITY FUND IX-A AIV L.P. CHUNG PETER Y Fitzgerald Charles James JR 10% Owner	0	$0	72,644,324 (Indirect)	View
Ownership	2021-06-10 9:01 pm	N/A N/A	LifeStance Health Group Inc.	LFST	SUMMIT PARTNERS L P SUMMIT MASTER COMPANY LLC SUMMIT PARTNERS GE IX L.P. SUMMIT PARTNERS GE IX LLC Summit Investors Management LLC SUMMIT PARTNERS ENTREPRENEUR ADVISORS GP II LLC Manager of GP of 10% owner	0	$0	48,244,251 (Indirect)	View
2021-04-29 Option Award	2021-05-03 5:29 pm	N/A N/A	A10 Networks Inc.	ATEN	SUMMIT PARTNERS L P Summit Partners GE VIII LLC SUMMIT PARTNERS GE VIII L.P. Summit Partners Growth Equity Fund VIII-A L.P. Summit Partners Growth Equity Fund VIII-B L.P. SUMMIT MASTER COMPANY LLC Summit Investors Management LLC Summit Investors I LLC Summit Investors I (UK) L.P. MANNION MARTIN J Manager of GP of 10% owner Director 10% Owner	16,949	$0	9,577,890 (Indirect)	View

Insider Trading & Ownership - SUMMIT PARTNERS L P