SUMMIT PARTNERS L P - SEC Form 4 Insider Trading Activity
10% Owner
FundSelling only
Filings (90d)
1
1 company
Purchases
0
Sales
7
$679.35M
Filings (all time)
10
since 2024
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10% Owner
Updated Aug 16, 2026
SUMMIT PARTNERS L P has filed 1 SEC Form 4 filing across 1 company in the last 90 days - selling. Lifetime open-market sales: $679.35M.
SUMMIT PARTNERS L P is an investment firm that reports beneficial ownership of shares in Solo Brands, Inc. (SBDS) and 2 other companies under U.S. securities law. It has submitted 18 SEC insider filings since 2024, most recently in January 2026.
InsiderAlpha's records for SUMMIT PARTNERS L P go back to 2024: 10 primary Form 4 filings, an average of 3.3 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Every role SUMMIT PARTNERS L P has reported on a Form 4, reconstructed from the filings themselves. Reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| KVYO | Klaviyo, Inc. | S - Open-market sale | 5.00M | $17.71 | $88.55M | |
| KVYO | Klaviyo, Inc. | J - Other acquisition / disposition | 5.00M | - | - | |
| SBDS | Solo Brands, Inc. | J - Other acquisition / disposition | 354.2K | - | - | |
| SBDS | Solo Brands, Inc. | J - Other acquisition / disposition | 354.2K | - | - | |
| KVYO | Klaviyo, Inc. | S - Open-market sale | 4.00M | $31.87 | $127.48M | |
| KVYO | Klaviyo, Inc. | J - Other acquisition / disposition | 4.00M | - | - | |
| KVYO | Klaviyo, Inc. | S - Open-market sale | 975.0K | $30.01 | $29.26M | |
| KVYO | Klaviyo, Inc. | J - Other acquisition / disposition | 975.0K | - | - | |
| KVYO | Klaviyo, Inc. | J - Other acquisition / disposition | 500.0K | $0.00 | - | |
| LFST | LifeStance Health Group, Inc. | S - Open-market sale | 8.41M | $5.07 | $42.63M | |
| KVYO | Klaviyo, Inc. | S - Open-market sale | 6.50M | $30.01 | $195.06M | |
| KVYO | Klaviyo, Inc. | J - Other acquisition / disposition | 7.00M | - | - | |
| KVYO | Klaviyo, Inc. | S - Open-market sale | 2.10M | $39.15 | $82.22M | |
| KVYO | Klaviyo, Inc. | J - Other acquisition / disposition | 2.10M | - | - | |
| KVYO | Klaviyo, Inc. | J - Other acquisition / disposition | 346.7K | $0.00 | - | |
| KVYO | Klaviyo, Inc. | S - Open-market sale | 3.15M | $36.20 | $114.15M | |
| KVYO | Klaviyo, Inc. | J - Other acquisition / disposition | 3.50M | - | - |
Insiders who reported open-market trades at the companies SUMMIT PARTNERS L P has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
SUMMIT PARTNERS L P is an investment firm that reports beneficial ownership of shares in Solo Brands, Inc. (SBDS) and 2 other companies under U.S. securities law. It has submitted 18 SEC insider filings since 2024, most recently in January 2026.…
1 primary Form 4 filing in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases and 7 open-market sales ($679.35M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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