SUMMIT PARTNERS L P Long-Term Concentrated

Location: Boston, MA

CIK: 0000830588 · Show all filings

Period: Q2 2026 (← Previous) (Next →)

Filing Date: Jul 30, 2026

Total Value: $609M (100.0% shares, 0.0% debt)

Holdings (5)

KVYO KLAVIYO INC 46.8%

Value $285M Shares 18,852,778 Share Price $15.10 Est. Cost/Share $34.31 Unrealized @ Report Date -56.0%

LFST LIFESTANCE HEALTH GROUP INC 41.0%

Value $250M Shares 23,310,115 Share Price $10.71 Est. Cost/Share $26.42 Unrealized @ Report Date -59.5%

AKA A K A BRANDS HLDG CORP 10.6%

Value $64.84M Shares 6,053,693 Share Price $10.71 Est. Cost/Share $10.11 Unrealized @ Report Date +6.0%

ATEN A10 NETWORKS INC 1.2%

Value $7.474M Shares 200,065 Share Price $37.36 Est. Cost/Share $12.71 Unrealized @ Report Date +193.8%

MTSI MACOM TECH SOLUTIONS HLDGS I 0.4%

Value $2.284M Shares 6,005 Share Price $380.37 Est. Cost/Share $54.79 Unrealized @ Report Date +594.3%

Ticker	Issuer	Shares	Value	%	Share Price	Est. Cost/Share	Unrealized @ Report Date	Class	CUSIP
KVYO	KLAVIYO INC	18,852,778	$285M	46.8%	$15.10	$34.31	-56.0%	COM SER A	49845K101
LFST	LIFESTANCE HEALTH GROUP INC	23,310,115	$250M	41.0%	$10.71	$26.42	-59.5%	COM	53228F101
AKA	A K A BRANDS HLDG CORP	6,053,693	$64.84M	10.6%	$10.71	$10.11	+6.0%	COM SHS	00152K200
ATEN	A10 NETWORKS INC	200,065	$7.474M	1.2%	$37.36	$12.71	+193.8%	COM	002121101
MTSI	MACOM TECH SOLUTIONS HLDGS I	6,005	$2.284M	0.4%	$380.37	$54.79	+594.3%	COM	55405Y100