Klaviyo, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Bialecki Andrew | Chief Executive Officer | Sale | 93,066 | $33.05 | $3,075,831 | 6,934 | Dec 22, 2025 |
| Edmond Landon | Chief Legal Officer | Sale | 13,718 | $31.41 | $430,882 | 354,354 | Dec 18, 2025 |
| Whalen Amanda | Chief Financial Officer | Sale | 460 | $30.59 | $14,071 | 452,174 | Dec 18, 2025 |
| Hallen Ed | — | Sale | 82,672 | $30.37 | $2,510,749 | 525,246 | Dec 17, 2025 |
| Bialecki Andrew | Chief Executive Officer | Sale | 100,000 | $30.40 | $3,040,000 | — | Dec 16, 2025 |
| Edmond Landon | Chief Legal Officer | Gift | 8,400 | — | — | 368,072 | Dec 15, 2025 |
| Rowland Stephen Eric | President | Sale | 3,191 | $29.01 | $92,571 | 434,294 | Dec 15, 2025 |
| Hallen Ed | — | Sale | 600 | $30.15 | $18,090 | 607,918 | Dec 15, 2025 |
| Bialecki Andrew | Chief Executive Officer | Sale | 82,223 | $30.12 | $2,476,557 | — | Dec 10, 2025 |
| Bialecki Andrew | Chief Executive Officer | Sale | 142,045 | $28.62 | $4,065,328 | — | Dec 4, 2025 |
| Bialecki Andrew | Chief Executive Officer | C | 144,717 | — | — | 144,717 | Nov 24, 2025 |
| Edmond Landon | Chief Legal Officer | Sale | 4,020 | $26.97 | $108,419 | 376,472 | Nov 20, 2025 |
| Bialecki Andrew | Chief Executive Officer | C | 147,329 | — | — | 147,329 | Nov 18, 2025 |
| Rowland Stephen Eric | President | C | 22,855 | — | — | 454,371 | Nov 17, 2025 |
| Galvin Carmel | Chief People Officer | Sale | 7,120 | $27.74 | $197,509 | 643,896 | Nov 17, 2025 |
| Edmond Landon | Chief Legal Officer | C | 11,074 | — | — | 390,866 | Nov 15, 2025 |
| Fernandez Gomez Luciano | Interim Executive Officer | Tax Withholding | 43,533 | $28.61 | $1,245,479 | 83,852 | Nov 15, 2025 |
| Whalen Amanda | Chief Financial Officer | C | 15,000 | — | — | 496,719 | Nov 15, 2025 |
| Bialecki Andrew | Chief Executive Officer | Sale | 140,464 | $29.74 | $4,177,399 | — | Nov 11, 2025 |
| Hallen Ed | — | Sale | 2,266 | $30.00 | $67,980 | 608,518 | Nov 10, 2025 |
| Rowland Stephen Eric | President | Sale | 7,105 | $24.35 | $173,007 | 431,516 | Oct 15, 2025 |
| Bialecki Andrew | Chief Executive Officer | C | 163,331 | — | — | 163,331 | Oct 14, 2025 |
| Whalen Amanda | Chief Financial Officer | Sale | 5,192 | $24.45 | $126,944 | 481,719 | Oct 10, 2025 |
| Bialecki Andrew | Chief Executive Officer | Sale | 144,890 | $25.32 | $3,668,615 | 14,618 | Oct 7, 2025 |
| Bialecki Andrew | Chief Executive Officer | Sale | 28,811 | $27.70 | $798,065 | — | Sep 30, 2025 |
| Bialecki Andrew | Chief Executive Officer | C | 211,358 | — | — | 211,358 | Sep 23, 2025 |
| Bialecki Andrew | Chief Executive Officer | C | 226,382 | — | — | 226,382 | Sep 16, 2025 |
| Fernandez Gomez Luciano | Interim Executive Officer | Award / Grant | 100,597 | — | — | 127,385 | Sep 15, 2025 |
| Rowland Stephen Eric | President | Sale | 6,905 | $31.90 | $220,270 | 438,821 | Sep 15, 2025 |
| Hallen Ed | — | Sale | 22,224 | $31.65 | $703,390 | 177,776 | Sep 15, 2025 |
| Whalen Amanda | Chief Financial Officer | C | 11,204 | — | — | 496,719 | Sep 12, 2025 |
| Hallen Ed | — | Gift | 990,000 | — | — | — | Sep 11, 2025 |
| St. Ledger Susan | — | Sale | 3,413 | $32.20 | $109,899 | 10,939 | Sep 10, 2025 |
| Bialecki Andrew | Chief Executive Officer | Sale | 220,481 | $31.96 | $7,046,573 | — | Sep 9, 2025 |
| SUMMIT INVESTORS GE IX/VC IV (UK), L.P. | — | C | 4,000,000 | — | — | 4,000,000 | Sep 8, 2025 |
| Bialecki Andrew | Chief Executive Officer | C | 223,304 | — | — | 223,304 | Sep 2, 2025 |
| Bialecki Andrew | Chief Executive Officer | Sale | 216,433 | $31.51 | $6,819,804 | 10,269 | Aug 28, 2025 |
| SUMMIT INVESTORS GE IX/VC IV, LLC | — | C | 975,000 | — | — | 975,000 | Aug 25, 2025 |
| SUMMIT PARTNERS L P | — | Other | 500,000 | — | — | — | Aug 21, 2025 |
| Fernandez Gomez Luciano | — | C | 7,000 | — | — | 33,788 | Aug 15, 2025 |
| Whalen Amanda | Chief Financial Officer | Tax Withholding | 46,829 | $31.43 | $1,471,835 | 500,515 | Aug 15, 2025 |
| Galvin Carmel | Chief People Officer | Sale | 11,155 | $31.67 | $353,279 | 675,833 | Aug 15, 2025 |
| Rowland Stephen Eric | President | Tax Withholding | 34,326 | $31.43 | $1,078,866 | 424,374 | Aug 15, 2025 |
| Edmond Landon | Chief Legal Officer | Tax Withholding | 24,695 | $31.43 | $776,164 | 391,475 | Aug 15, 2025 |
| Summit Partners Co-Invest (Kiwi), LP | — | C | 7,000,000 | — | — | 7,000,000 | Aug 13, 2025 |
| Rowland Stephen Eric | President | Sale | 7,079 | $31.56 | $223,413 | 435,845 | Jul 15, 2025 |
| Whalen Amanda | Chief Financial Officer | Sale | 14,800 | $31.66 | $468,568 | 518,031 | Jul 11, 2025 |
| Rowland Stephen Eric | President | Sale | 300 | $33.82 | $10,146 | 442,924 | Jun 16, 2025 |
| Whalen Amanda | Chief Financial Officer | C | 11,204 | — | — | 532,831 | Jun 13, 2025 |
| Bialecki Andrew | Chief Executive Officer | Gift | 100,000 | — | — | — | Jun 11, 2025 |