Bialecki Andrew — SEC Form 4 filings
SEC reporting owner CIK 1991099. 32 Form 4 filings on record with FilingPulse; latest filed 2026-05-28.
Transaction summary — filings shown
Covers all 32 filings on record, filed 2025-05-16 to 2026-05-28. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 57 legs across 31 filings — 16,520,185 shares, $497,341,830 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 84.
- Largest priced transaction: sale of 10,969,078 shares @ $32.90 ($360,827,821) in Klaviyo, Inc., filed 2025-05-16.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| Klaviyo, Inc. (KVYO) | Co-Chief Executive Officer, Director, 10% owner | 32 | — | 57 legs · 16,520,185 sh · $497,341,830 | 84 |
Form 4 filings — Bialecki Andrew
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-05-28 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 212,529 · Sale (S): 212,529 @ $14.61 · Conversion (C): 212,529 (derivative) @ $0 | EDGAR |
| 2026-05-20 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 200,000 · Sale (S): 200,000 @ $14.88 · Conversion (C): 200,000 (derivative) @ $0 | EDGAR |
| 2026-05-14 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 200,000 · Sale (S): 58,684 @ $14.97 · Sale (S): 141,316 @ $14.46 · Conversion (C): 200,000 (derivative) @ $0 | EDGAR |
| 2026-04-16 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 200,000 · Sale (S): 109,142 @ $17.39 · Sale (S): 90,858 @ $16.94 · Conversion (C): 200,000 (derivative) @ $0 | EDGAR |
| 2026-04-09 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 200,000 · Sale (S): 200,000 @ $18.63 · Conversion (C): 200,000 (derivative) @ $0 | EDGAR |
| 2026-04-02 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 200,000 · Sale (S): 200,000 @ $19.42 · Conversion (C): 200,000 (derivative) @ $0 | EDGAR |
| 2026-03-26 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 200,000 · Sale (S): 200,000 @ $18.17 · Conversion (C): 200,000 (derivative) @ $0 | EDGAR |
| 2026-03-19 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 200,000 · Sale (S): 97,379 @ $19.60 · Sale (S): 102,621 @ $19.15 · Conversion (C): 200,000 (derivative) @ $0 | EDGAR |
| 2026-03-12 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 206,827 · Sale (S): 206,127 @ $19.96 · Sale (S): 700 @ $19.34 · Conversion (C): 206,827 (derivative) @ $0 | EDGAR |
| 2026-03-05 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 200,000 · Sale (S): 154,022 @ $18.86 · Sale (S): 45,978 @ $17.90 · Conversion (C): 200,000 (derivative) @ $0 | EDGAR |
| 2026-02-26 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 200,000 · Sale (S): 160,356 @ $16.86 · Sale (S): 39,644 @ $16.38 · Conversion (C): 200,000 (derivative) @ $0 | EDGAR |
| 2026-01-29 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 155,219 · Sale (S): 150,689 @ $25.34 · Sale (S): 4,530 @ $24.94 · Conversion (C): 155,219 (derivative) @ $0 | EDGAR |
| 2026-01-22 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 167,926 · Sale (S): 167,130 @ $24.16 · Sale (S): 796 @ $23.29 · Conversion (C): 167,926 (derivative) @ $0 | EDGAR |
| 2026-01-15 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 140,646 · Sale (S): 50,319 @ $27.62 · Sale (S): 90,327 @ $27.29 · Conversion (C): 140,646 (derivative) @ $0 | EDGAR |
| 2026-01-08 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 137,504 · Sale (S): 135,122 @ $28.92 · Sale (S): 2,382 @ $28.52 · Conversion (C): 16,649 · Sale (S): 16,649 @ $30.01 · Conversion (C): 137,504 (derivative) @ $0 · +1 more | EDGAR |
| 2025-12-23 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 100,000 · Sale (S): 93,066 @ $33.05 · Sale (S): 6,934 @ $31.94 · Conversion (C): 100,000 (derivative) @ $0 | EDGAR |
| 2025-12-17 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 138,648 · Sale (S): 138,648 @ $29.04 · Conversion (C): 100,000 · Sale (S): 100,000 @ $30.40 · Conversion (C): 138,648 (derivative) @ $0 · Conversion (C): 100,000 (derivative) @ $0 | EDGAR |
| 2025-12-11 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 131,362 · Sale (S): 130,562 @ $29.42 · Sale (S): 800 @ $28.84 · Conversion (C): 82,223 · Sale (S): 82,223 @ $30.12 · Conversion (C): 17,777 · +7 more | EDGAR |
| 2025-12-04 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 142,045 · Sale (S): 142,045 @ $28.62 · Conversion (C): 952 · Sale (S): 952 @ $30 · Conversion (C): 142,045 (derivative) @ $0 · Conversion (C): 952 (derivative) @ $0 | EDGAR |
| 2025-11-26 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 144,717 · Sale (S): 144,717 @ $27.76 · Conversion (C): 144,717 (derivative) @ $0 | EDGAR |
| 2025-11-20 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 147,329 · Sale (S): 147,329 @ $27.16 · Conversion (C): 147,329 (derivative) @ $0 | EDGAR |
| 2025-11-13 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 140,464 · Sale (S): 140,464 @ $29.74 · Conversion (C): 140,464 (derivative) @ $0 | EDGAR |
| 2025-10-16 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 163,331 · Sale (S): 163,331 @ $24.37 · Conversion (C): 163,331 (derivative) @ $0 | EDGAR |
| 2025-10-09 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 159,508 · Sale (S): 144,890 @ $25.32 · Sale (S): 14,618 @ $25.07 · Conversion (C): 159,508 (derivative) @ $0 | EDGAR |
| 2025-10-02 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 137,224 · Sale (S): 17,960 @ $31.24 · Sale (S): 6,048 @ $30.28 · Sale (S): 44,672 @ $29.03 · Sale (S): 39,733 @ $28.22 · Sale (S): 28,811 @ $27.70 · +1 more | EDGAR |
| 2025-09-25 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 211,358 · Sale (S): 181,553 @ $35.52 · Sale (S): 29,805 @ $35.01 · Conversion (C): 211,358 (derivative) @ $0 | EDGAR |
| 2025-09-17 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 226,382 · Sale (S): 140,921 @ $32.71 · Sale (S): 85,461 @ $31.76 · Conversion (C): 226,382 (derivative) @ $0 | EDGAR |
| 2025-09-11 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 220,481 · Sale (S): 220,481 @ $31.96 · Conversion (C): 220,481 (derivative) @ $0 | EDGAR |
| 2025-09-04 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 223,304 · Sale (S): 128,877 @ $31.18 · Sale (S): 94,427 @ $30.76 · Conversion (C): 223,304 (derivative) @ $0 | EDGAR |
| 2025-08-28 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 226,702 · Sale (S): 216,433 @ $31.51 · Sale (S): 10,269 @ $31.21 · Conversion (C): 3,500,000 · Gift (G): 3,500,000 @ $0 · Conversion (C): 226,702 (derivative) @ $0 · +1 more | EDGAR |
| 2025-06-11 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 100,000 · Gift (G): 100,000 @ $0 · Conversion (C): 100,000 (derivative) @ $0 | EDGAR |
| 2025-05-16 | 4 | Klaviyo, Inc. (KVYO) | Conversion (C): 10,969,078 @ $0 · Sale (S): 10,969,078 @ $32.90 · Option exercise (M): 15,829,184 (derivative) @ $0 · Option exercise (M): 5,600,000 (derivative) @ $0 · Option exercise (M): 21,429,184 (derivative) @ $0.01 · Conversion (C): 10,969,078 (derivative) @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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