SUMMIT PARTNERS L P has filed 79 insider transactions across 3 companies since September 2023.
Most recent transaction: a transaction of 354189 shares of Solo Brands, Inc. ($SBDS) on January 01, 2026.
Activity breakdown: 0 open-market purchases and 26 sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 1, 2026 | Solo Brands, Inc. | $SBDS | SUMMIT PARTNERS L P | Not found | J | Class B Common Stock, $0.001 par value per share | 354189 | $0.00 | 0.0000 | 1,648,000 | 100.00% | 21.49% |
| Jan. 1, 2026 | Solo Brands, Inc. | $SBDS | SUMMIT PARTNERS L P | Not found | C | Common Units | 354189 | $0.00 | 0.0000 | 1,648,000 | 100.00% | 21.49% |
| Jan. 1, 2026 | Solo Brands, Inc. | $SBDS | SUMMIT PARTNERS L P | Not found | C | Class A Common Stock, $0.001 par value per share | 354189 | $0.00 | 1,100,870.0000 | 1,648,000 | 47.44% | 21.49% |
| Sept. 8, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 4000000 | $31.87 | 0.0000 | 266,336,826 | 100.00% | 1.50% |
| Sept. 8, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 4000000 | $0.00 | 4,000,000.0000 | 266,336,826 | 9999.99% | 1.50% |
| Sept. 8, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 4000000 | $0.00 | 18,852,778.0000 | 266,336,826 | 26.93% | 1.50% |
| Aug. 25, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 975000 | $0.00 | 975,000.0000 | 266,336,826 | 9999.99% | 0.37% |
| Aug. 25, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 975000 | $0.00 | 22,852,778.0000 | 266,336,826 | 4.46% | 0.37% |
| Aug. 25, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 975000 | $30.01 | 0.0000 | 266,336,826 | 100.00% | 0.37% |
| Aug. 21, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | J | Series A Common Stock, par value $0.001 per share | 500000 | $0.00 | 0.0000 | 266,336,826 | 100.00% | 0.19% |
| Aug. 18, 2025 | LifeStance Health Group, Inc. | $LFST | SUMMIT PARTNERS L P | Not found | S | Common Stock | 8407643 | $5.07 | 33,524,715.0000 | 384,550,152 | 20.05% | 2.19% |
| Aug. 13, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 7000000 | $0.00 | 23,827,778.0000 | 266,336,826 | 41.60% | 2.63% |
| Aug. 13, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 6500000 | $30.01 | 7,500,000.0000 | 266,336,826 | 46.43% | 2.44% |
| Aug. 13, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 7000000 | $0.00 | 7,500,000.0000 | 266,336,826 | 1400.00% | 2.63% |
| June 4, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 4000000 | $0.00 | 30,827,778.0000 | 266,336,826 | 14.91% | 1.50% |
| June 4, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 4000000 | $33.35 | 4,000,000.0000 | 266,336,826 | 50.00% | 1.50% |
| June 4, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 4000000 | $0.00 | 4,000,000.0000 | 266,336,826 | 9999.99% | 1.50% |
| May 19, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 4000000 | $0.00 | 34,827,778.0000 | 266,336,826 | 12.98% | 1.50% |
| May 19, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 4000000 | $33.00 | 4,000,000.0000 | 266,336,826 | 50.00% | 1.50% |
| May 19, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 4000000 | $0.00 | 4,000,000.0000 | 266,336,826 | 9999.99% | 1.50% |
| March 14, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 2000000 | $0.00 | 2,000,000.0000 | 266,336,826 | 9999.99% | 0.75% |
| March 14, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 2000000 | $32.44 | 2,000,000.0000 | 266,336,826 | 50.00% | 0.75% |
| March 14, 2025 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 2000000 | $0.00 | 38,827,778.0000 | 266,336,826 | 5.43% | 0.75% |
| Dec. 9, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 2100000 | $0.00 | 2,100,000.0000 | 267,854,769 | 9999.99% | 0.78% |
| Dec. 9, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 2100000 | $0.00 | 40,827,778.0000 | 267,854,769 | 5.42% | 0.78% |
| Dec. 9, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 2100000 | $39.15 | 2,100,000.0000 | 267,854,769 | 50.00% | 0.78% |
| Nov. 25, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | J | Series A Common Stock, par value $0.001 per share | 346707 | $0.00 | 0.0000 | 267,854,769 | 100.00% | 0.13% |
| Nov. 14, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 3153293 | $36.20 | 3,846,707.0000 | 267,854,769 | 45.05% | 1.18% |
| Nov. 14, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 3500000 | $0.00 | 42,927,778.0000 | 267,854,769 | 8.88% | 1.31% |
| Nov. 14, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 3500000 | $0.00 | 3,846,707.0000 | 267,854,769 | 1009.50% | 1.31% |
| Sept. 13, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 113561 | $0.00 | 113,561.0000 | 242,889,272 | 9999.99% | 0.05% |
| Sept. 13, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 113561 | $0.00 | 46,427,778.0000 | 242,889,272 | 0.25% | 0.05% |
| Sept. 13, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 113561 | $31.47 | 0.0000 | 242,889,272 | 100.00% | 0.05% |
| Sept. 12, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 107205 | $0.00 | 46,541,339.0000 | 242,889,272 | 0.23% | 0.04% |
| Sept. 12, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 107205 | $0.00 | 107,205.0000 | 242,889,272 | 9999.99% | 0.04% |
| Sept. 12, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 107205 | $31.33 | 0.0000 | 242,889,272 | 100.00% | 0.04% |
| Sept. 11, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 2942 | $0.00 | 2,942.0000 | 242,889,272 | 9999.99% | 0.00% |
| Sept. 11, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 2942 | $0.00 | 46,648,544.0000 | 242,889,272 | 0.01% | 0.00% |
| Sept. 11, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 2942 | $31.01 | 0.0000 | 242,889,272 | 100.00% | 0.00% |
| Sept. 3, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 6039 | $0.00 | 46,651,486.0000 | 242,889,272 | 0.01% | 0.00% |
| Sept. 3, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 6039 | $0.00 | 6,039.0000 | 242,889,272 | 9999.99% | 0.00% |
| Sept. 3, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 6039 | $31.53 | 0.0000 | 242,889,272 | 100.00% | 0.00% |
| Aug. 30, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 1300 | $0.00 | 1,300.0000 | 242,889,272 | 9999.99% | 0.00% |
| Aug. 30, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 1300 | $31.64 | 0.0000 | 242,889,272 | 100.00% | 0.00% |
| Aug. 30, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 1300 | $0.00 | 46,657,525.0000 | 242,889,272 | 0.00% | 0.00% |
| Aug. 29, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 16931 | $0.00 | 46,658,825.0000 | 242,889,272 | 0.04% | 0.01% |
| Aug. 29, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 16931 | $0.00 | 16,931.0000 | 242,889,272 | 9999.99% | 0.01% |
| Aug. 29, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 16931 | $31.55 | 0.0000 | 242,889,272 | 100.00% | 0.01% |
| Aug. 28, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 27445 | $31.68 | 0.0000 | 242,889,272 | 100.00% | 0.01% |
| Aug. 28, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 27445 | $0.00 | 27,445.0000 | 242,889,272 | 9999.99% | 0.01% |
| Aug. 28, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 27445 | $0.00 | 46,675,756.0000 | 242,889,272 | 0.06% | 0.01% |
| Aug. 27, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 67436 | $0.00 | 46,703,201.0000 | 242,889,272 | 0.14% | 0.03% |
| Aug. 27, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 67436 | $32.29 | 0.0000 | 242,889,272 | 100.00% | 0.03% |
| Aug. 27, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 67436 | $0.00 | 67,436.0000 | 242,889,272 | 9999.99% | 0.03% |
| Aug. 26, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 90502 | $0.00 | 46,770,637.0000 | 242,889,272 | 0.19% | 0.04% |
| Aug. 26, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 90502 | $0.00 | 90,502.0000 | 242,889,272 | 9999.99% | 0.04% |
| Aug. 26, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 90502 | $32.27 | 0.0000 | 242,889,272 | 100.00% | 0.04% |
| Aug. 23, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 305638 | $0.00 | 46,861,139.0000 | 242,889,272 | 0.66% | 0.13% |
| Aug. 23, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 305638 | $0.00 | 305,638.0000 | 242,889,272 | 9999.99% | 0.13% |
| Aug. 23, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 305638 | $32.33 | 0.0000 | 242,889,272 | 100.00% | 0.13% |
| Aug. 22, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 82499 | $31.76 | 0.0000 | 242,889,272 | 100.00% | 0.03% |
| Aug. 22, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 82499 | $0.00 | 82,499.0000 | 242,889,272 | 9999.99% | 0.03% |
| Aug. 22, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 82499 | $0.00 | 47,166,777.0000 | 242,889,272 | 0.18% | 0.03% |
| Aug. 21, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 113850 | $31.76 | 0.0000 | 242,889,272 | 100.00% | 0.05% |
| Aug. 21, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 113850 | $0.00 | 113,850.0000 | 242,889,272 | 9999.99% | 0.05% |
| Aug. 21, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 113850 | $0.00 | 47,249,276.0000 | 242,889,272 | 0.24% | 0.05% |
| Aug. 20, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 135902 | $31.95 | 0.0000 | 242,889,272 | 100.00% | 0.06% |
| Aug. 20, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 135902 | $0.00 | 135,902.0000 | 242,889,272 | 9999.99% | 0.06% |
| Aug. 20, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 135902 | $0.00 | 47,363,126.0000 | 242,889,272 | 0.29% | 0.06% |
| Aug. 16, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | S | Series A Common Stock, par value $0.001 per share | 242601 | $31.78 | 0.0000 | 242,889,272 | 100.00% | 0.10% |
| Aug. 16, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series A Common Stock, par value $0.001 per share | 242601 | $0.00 | 242,601.0000 | 242,889,272 | 9999.99% | 0.10% |
| Aug. 16, 2024 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | Not found | C | Series B Common Stock, par value $0.001 per share | 242601 | $0.00 | 47,499,028.0000 | 242,889,272 | 0.51% | 0.10% |
| May 24, 2024 | LifeStance Health Group, Inc. | $LFST | SUMMIT PARTNERS L P | Not found | S | Common Stock | 3802345 | $5.89 | 41,932,358.0000 | 0 | 8.31% | 0.00% |
| Oct. 23, 2023 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | TenPercentOwner | C | Series A Common Stock, par value $0.001 per share | 1770318 | $0.00 | 1,770,318.0000 | 229,857,206 | 9999.99% | 0.77% |
| Oct. 23, 2023 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | TenPercentOwner | S | Series A Common Stock, par value $0.001 per share | 1770318 | $28.32 | 0.0000 | 229,857,206 | 100.00% | 0.77% |
| Oct. 23, 2023 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | TenPercentOwner | C | Series B Common Stock, par value $0.001 per share | 1770318 | $0.00 | 47,741,629.0000 | 229,857,206 | 3.58% | 0.77% |
| Sept. 22, 2023 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | TenPercentOwner | C | Series B Common Stock, par value $0.001 per share | 4919165 | $0.00 | 49,511,947.0000 | 229,857,206 | 9.04% | 2.14% |
| Sept. 22, 2023 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | TenPercentOwner | C | Series A Common Stock, par value $0.001 per share | 4919165 | $0.00 | 4,919,165.0000 | 229,857,206 | 9999.99% | 2.14% |
| Sept. 22, 2023 | Klaviyo, Inc. | $KVYO | SUMMIT PARTNERS L P | TenPercentOwner | S | Series A Common Stock, par value $0.001 per share | 4919165 | $28.32 | 0.0000 | 229,857,206 | 100.00% | 2.14% |