SUMMIT PARTNERS L P

Name: SUMMIT PARTNERS L P: Form 13F holdings for the quarter ended 2026-06-30
Creator: Listed

An institutional investment manager in BOSTON, MA. Its Form 13F for the quarter ended Jun 30, 2026, filed Jul 30, 2026. SEC CIK 830588.

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Reported value$608.9m
Positions5

Holdings: 5 positions

The filing on sec.gov

As filed, largest first. Reported value is what the manager stated for each position at the quarter end, in US dollars; it is filing data, not a price. Weight is the position's share of the total reported value. Changes compare with the 13F for the quarter ended 2026-03-31.

SUMMIT PARTNERS L P, holdings
Issuer	Class	CUSIP	Reported value$m	Weight	Shares	Change on the quarter before
Klaviyo IncKVYO	COM SER A	49845K101	285	46.8%	18,852,778	Unchanged
Lifestance Health Group IncLFST	COM	53228F101	250	41.0%	23,310,115	Reduced−5,899,661
A K a Brands HLDG CorpAKA	COM SHS	00152K200	64.8	10.6%	6,053,693	Unchanged
A10 Networks IncATEN	COM	002121101	7.5	1.2%	200,065	Unchanged
Macom Tech Solutions Holdings IMTSI	COM	55405Y100	2.3	0.4%	6,005	Reduced−43,268

Sold out: 2 positions

Held at the end of the quarter before and not reported this quarter.

SUMMIT PARTNERS L P, positions sold out
Issuer	Class	CUSIP	Reported value$	Weight	Shares	Put or call	Change on the quarter before
Aveanna Healthcare Holdings IncAVAH	COM	05356F105	0.0	0.0%	0		Sold out−5,451,422
Solo Brands IncSBDS	COM CL A NEW	83425V203	0.0	0.0%	0		Sold out−1,100,870

Source: SEC EDGAR, Form 13F-HR, accession 0001172661-26-002948 (on sec.gov). Last ingested by Listed: Oct 22, 2026, 05:26 ET. Listed shows no prices and gives no investment advice.