Klaviyo, Inc. insider trading
Every open-market purchase and sale by Klaviyo, Inc.'s officers, directors and largest shareholders since November 4, 2021, and what the share price did next.
| Date | Insider | Trade | Shares | Price | Value | 1M after | 3M after | 6M after |
|---|
Does following Klaviyo, Inc.’s insiders pay?
From September 22, 2023 to August 13, 2026, 13 insiders reported 4 open-market purchases and 32 sales not made under a pre-set plan in Klaviyo, Inc. Twelve months after each purchase was reported, the shares were −25.8% against the S&P 500 on average (median −36.2%), over 3 purchases with a full year of prices; 33% beat the index. After sales, the shares moved −29.4% against the index over 12 months (a negative figure means selling was the right call). That rests on fewer than 20 purchases, too few to read much into. Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on August 5, 2024 into $9,433 by November 2, 2026, −2.6% a year. It held shares 100% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $15,005 (+19.9% a year), and held throughout $15,005 (+19.9%).
| Insider | Role | Purchases | 12 months after their purchases | Beat the S&P 500 | Sales | 12 months after their sales | Latest report |
|---|---|---|---|---|---|---|---|
| Summit Partners L P | 10% owner | 0 | — | — | 8 | −19.6% (8) | December 11, 2024 |
| Summit Investors Ge Ix/vc IV (uk), L.P. | 10% owner | 0 | — | — | 6 | −42.6% (6) | September 10, 2025 |
| Fagnan Jeff | 10% owner | 3 | −25.8% (3) | 33% | 1 | −34.2% (1) | April 10, 2025 |
| Summit Partners Co-Invest (kiwi), LP | 10% owner | 0 | — | — | 3 | −39.0% (2) | August 13, 2026 |
| Summit Partners Growth Equity Fund Ix-A, L.P. | 10% owner | 0 | — | — | 3 | −21.9% (3) | September 4, 2024 |
| Summit Partners Growth Equity Fund Ix-B, L.P. | 10% owner | 0 | — | — | 3 | −13.7% (3) | September 3, 2024 |
| Ceran Jennifer | Director | 1 | — | — | 1 | −34.2% (1) | February 17, 2026 |
| Summit Investors Ge Ix/vc IV, LLC | 10% owner | 0 | — | — | 2 | −70.3% (2) | August 27, 2025 |
| Accomplice Fund I, L.P. | 10% owner | 0 | — | — | 1 | −5.7% (1) | October 23, 2023 |
| Astral Capital Abeh Manager, LLC | 10% owner | 0 | — | — | 1 | −34.2% (1) | September 22, 2023 |
| Astral Capital Abeh, LLC | 10% owner | 0 | — | — | 1 | −5.7% (1) | October 23, 2023 |
| Bialecki Andrew | Chief Executive Officer | 0 | — | — | 1 | −82.2% (1) | May 16, 2025 |
| Weisman Tony | Director | 0 | — | — | 1 | +21.4% (1) | March 4, 2024 |
When several insiders traded Klaviyo, Inc.
Months when 2 or more insiders became net buyers, or 3 or more net sellers, of Klaviyo, Inc. in reports dated in the 91 days before the month end, and how the stock did against the S&P 500 from that month end. After 3 selling crowds, −19.5%. One company's history is too short to judge by; the test across every company is the better guide.
| Month | Crowd | 3 months on, vs S&P 500 | 6 months | 12 months |
|---|---|---|---|---|
| May 30, 2025 | 3 selling | −14.4% | −32.6% | −80.5% |
| August 30, 2024 | 3 selling | +10.8% | +23.8% | −17.6% |
| September 29, 2023 | 4 selling | −31.1% | −49.7% | −32.0% |