Summit Partners L P insider trades
Summit Partners L P has filed 12 Form 4s with the SEC that we hold, for Klaviyo, Inc. (KVYO) (10% owner) and LifeStance Health Group, Inc. (LFST) (10% owner). Across all of them we count 0 purchases worth $0 and 10 sales worth $236.4M reported on Form 4. In the last 12 months: 0 purchases ($0) and 1 sale ($88.5M). The largest single trade was a sale of 5,000,000 shares of Klaviyo, Inc. worth $88.5M, dated 2026-08-11. The first filing on our record is dated 2024-08-22 and the latest 2026-08-13.
Klaviyo, Inc. (KVYO)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2024-08-20 | S, sale reported on Form 4 | 135,902 | $4.3M | 2024-08-22 |
| 2024-08-23 | S, sale reported on Form 4 | 305,638 | $9.9M | 2024-08-27 |
| 2024-08-26 | S, sale reported on Form 4 | 90,502 | $2.9M | 2024-08-28 |
| 2024-08-27 | S, sale reported on Form 4 | 67,436 | $2.2M | 2024-08-29 |
| 2024-09-03 | S, sale reported on Form 4 | 6,039 | $190.4K | 2024-09-05 |
| 2024-09-11 | S, sale reported on Form 4 | 2,942 | $91.2K | 2024-09-13 |
| 2024-09-12 | S, sale reported on Form 4 | 107,205 | $3.4M | 2024-09-16 |
| 2024-12-09 | S, sale reported on Form 4 | 2,100,000 | $82.2M | 2024-12-11 |
| 2026-08-11 | S, sale reported on Form 4 | 5,000,000 | $88.5M | 2026-08-13 |
LifeStance Health Group, Inc. (LFST)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2025-08-18 | S, sale reported on Form 4 | 8,407,643 | $42.6M | 2025-08-20 |
Counted from the Form 4 filings this reporting owner (SEC CIK 830588) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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