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Insider · CIK 0000830588

Summit Partners L P

owner

Files at KVYO (Klaviyo, Inc.), LFST (LifeStance Health Group, Inc.), SBDS (Solo Brands, Inc.). First filing Nov 18, 2024, latest Sep 10, 2025.

Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 9
$0 bought, $921M sold

Where the trades landed

Last year at the 2 companies this insider has traded most, with each buy and sell on the bar it happened.

KVYO: Klaviyo, Inc.

KVYOOct 9, 2026 · close 17.32

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

LFST: LifeStance Health Group, Inc.

LFSTOct 9, 2026 · close 12.42

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

This insider’s open-market buys and sells, scored.

ScoreCompanyValueHoldingsPrice contextFiled
72Notable
KVYOsell 6
Klaviyo, Inc.
$127M
4,000,000 shares
-100%+36% from low-33% from high
72Notable
KVYOsell 6
Klaviyo, Inc.
$29M
975,000 shares
-100%+29% from low-36% from high
57Moderate
LFSTsell 3
LifeStance Health Group, Inc.
$43M
8,407,643 shares
-20%+43% from low-34% from high
72Notable
KVYOsell 6
Klaviyo, Inc.
$195M
6,500,000 shares
-93%+29% from low-36% from high
72Notable
KVYOsell 3
Klaviyo, Inc.
$133M
4,000,000 shares
-100%+42% from low-29% from high
72Notable
KVYOsell 6
Klaviyo, Inc.
$132M
4,000,000 shares
-100%+41% from low-30% from high
72Notable
KVYOsell 4
Klaviyo, Inc.
$65M
2,000,000 shares
-100%-
72Notable
KVYOsell 3
Klaviyo, Inc.
$82M
2,100,000 shares
-100%-
72Notable
KVYOsell 4
Klaviyo, Inc.
$114M
3,153,293 shares
-90%-

Transactions

Every row this insider has filed, newest first.

DateCompanyTransactionSharesPriceValueHoldings afterFiled
Jan 1, 2026SBDS
Solo Brands, Inc.
CConversion
Class A Common Stock, $0.001 par value per shareindirect: See Footnotes
+354,189--1,100,870Jan 5, 2026
Jan 1, 2026SBDS
Solo Brands, Inc.
JOther
Class B Common Stock, $0.001 par value per shareindirect: See Footnotes
-354,189--0Jan 5, 2026
Jan 1, 2026SBDS
Solo Brands, Inc.
CConversion
Common Unitsderivativeindirect: See Footnotes
-354,189$0.00$00Jan 5, 2026
Sep 8, 2025KVYO
Klaviyo, Inc.
CConversion
Series A Common Stock, par value $0.001 per shareindirect: See footnotes
+4,000,000--4,000,000Sep 10, 2025
Sep 8, 2025KVYO
Klaviyo, Inc.
SOpen-market sale
Series A Common Stock, par value $0.001 per shareindirect: See footnotes
-4,000,000$31.87$127M0Sep 10, 2025
Sep 8, 2025KVYO
Klaviyo, Inc.
CConversion
Series B Common Stock, par value $0.001 per sharederivativeindirect: See footnotes
+4,000,000$0.00$018,852,778Sep 10, 2025
Aug 25, 2025KVYO
Klaviyo, Inc.
CConversion
Series A Common Stock, par value $0.001 per shareindirect: See footnote
+975,000--975,000Aug 27, 2025
Aug 25, 2025KVYO
Klaviyo, Inc.
SOpen-market sale
Series A Common Stock, par value $0.001 per shareindirect: See footnote
-975,000$30.01$29M0Aug 27, 2025
Aug 25, 2025KVYO
Klaviyo, Inc.
CConversion
Series B Common Stock, par value $0.001 per sharederivativeindirect: See footnote
+975,000$0.00$022,852,778Aug 27, 2025
Aug 21, 2025KVYO
Klaviyo, Inc.
JOther
Series A Common Stock, par value $0.001 per shareindirect: See footnote
-500,000$0.00$00Aug 22, 2025
Aug 18, 2025LFST
LifeStance Health Group, Inc.
SOpen-market sale
Common Stock
-8,407,643$5.07$43M33,524,715Aug 20, 2025
Aug 13, 2025KVYO
Klaviyo, Inc.
CConversion
Series A Common Stock, par value $0.001 per shareindirect: See footnote
+7,000,000--7,000,000Aug 15, 2025
Aug 13, 2025KVYO
Klaviyo, Inc.
SOpen-market sale
Series A Common Stock, par value $0.001 per shareindirect: See footnotes
-6,500,000$30.01$195M500,000Aug 15, 2025
Aug 13, 2025KVYO
Klaviyo, Inc.
CConversion
Series B Common Stock, par value $0.001 per sharederivativeindirect: See footnote
+7,000,000$0.00$023,827,778Aug 15, 2025
Jun 4, 2025KVYO
Klaviyo, Inc.
CConversion
Series A Common Stock, par value $0.001 per shareindirect: See footnote
+4,000,000--4,000,000Jun 5, 2025
Jun 4, 2025KVYO
Klaviyo, Inc.
SOpen-market sale
Series A Common Stock, par value $0.001 per shareindirect: See footnotes
-4,000,000$33.35$133M0Jun 5, 2025
Jun 4, 2025KVYO
Klaviyo, Inc.
CConversion
Series B Common Stock, par value $0.001 per sharederivativeindirect: See footnote
+4,000,000$0.00$030,827,778Jun 5, 2025
May 19, 2025KVYO
Klaviyo, Inc.
CConversion
Series A Common Stock, par value $0.001 per shareindirect: See footnote
+4,000,000--4,000,000May 20, 2025
May 19, 2025KVYO
Klaviyo, Inc.
SOpen-market sale
Series A Common Stock, par value $0.001 per shareindirect: See footnotes
-4,000,000$33.00$132M0May 20, 2025
May 19, 2025KVYO
Klaviyo, Inc.
CConversion
Series B Common Stock, par value $0.001 per sharederivativeindirect: See footnote
+4,000,000$0.00$034,827,778May 20, 2025
Mar 14, 2025KVYO
Klaviyo, Inc.
CConversion
Series A Common Stock, par value $0.001 per shareindirect: See footnote
+2,000,000--2,000,000Mar 17, 2025
Mar 14, 2025KVYO
Klaviyo, Inc.
SOpen-market sale
Series A Common Stock, par value $0.001 per shareindirect: See footnotes
-2,000,000$32.44$65M0Mar 17, 2025
Mar 14, 2025KVYO
Klaviyo, Inc.
CConversion
Series B Common Stock, par value $0.001 per sharederivativeindirect: See footnote
+2,000,000$0.00$038,827,778Mar 17, 2025
Dec 9, 2024KVYO
Klaviyo, Inc.
CConversion
Series A Common Stock, par value $0.001 per shareindirect: See footnote
+2,100,000--2,100,000Dec 11, 2024
Dec 9, 2024KVYO
Klaviyo, Inc.
SOpen-market sale
Series A Common Stock, par value $0.001 per shareindirect: See footnotes
-2,100,000$39.15$82M0Dec 11, 2024
Dec 9, 2024KVYO
Klaviyo, Inc.
CConversion
Series B Common Stock, par value $0.001 per sharederivativeindirect: See footnote
+2,100,000$0.00$040,827,778Dec 11, 2024
Nov 25, 2024KVYO
Klaviyo, Inc.
JOther
Series A Common Stock, par value $0.001 per shareindirect: See footnotes
-346,707$0.00$00Nov 25, 2024
Nov 14, 2024KVYO
Klaviyo, Inc.
CConversion
Series A Common Stock, par value $0.001 per shareindirect: See footnote
+3,500,000--3,500,000Nov 18, 2024
Nov 14, 2024KVYO
Klaviyo, Inc.
SOpen-market sale
Series A Common Stock, par value $0.001 per shareindirect: See footnotes
-3,153,293$36.20$114M346,707Nov 18, 2024
Nov 14, 2024KVYO
Klaviyo, Inc.
CConversion
Series B Common Stock, par value $0.001 per sharederivativeindirect: See footnote
+3,500,000$0.00$042,927,778Nov 18, 2024

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Summit Partners L P: insider trades and track record | InsiderTell