🕵️ Klaviyo Inc ($KVYO)
SEC insider & ownership activity, last 12 months · CIK 1835830 · every row links its SEC filing
Over the last 12 months insiders sold $222.0M against $300K of open-market buying. Andrew Bialecki sold $115.4M through a 10b5-1 trading plan in 51 lots (Sep–May). 1 planned sale is pending, the largest $1.0M (Landon Edmond). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $300K (1 lots) · 8 sellers, $222.0M (102 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Andrew Bialecki | 0 | – | 51 | $115.4M | May 26, 2026 |
| Summit Partners L P | 0 | – | 1 | $88.5M | Aug 11, 2026 |
| Hallen Ed | 0 | – | 12 | $10.3M | Aug 31, 2026 |
| Amanda Whalen | 0 | – | 17 | $3.3M | Aug 14, 2026 |
| Landon Ramon Edmond | 0 | – | 11 | $3.1M | Aug 31, 2026 |
| Stephen E. Rowland | 0 | – | 6 | $803K | Dec 15, 2025 |
| Galvin Carmel | 0 | – | 2 | $307K | Nov 17, 2025 |
| Ceran Jennifer | 1 | $300K | 0 | – | Feb 12, 2026 |
| St. Ledger Susan | 0 | – | 2 | $170K | Sep 11, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Bialecki Andrew | 36.5% | 13G | Aug 5, 2026 | filing ↗ | |
| Shopify Inc. | 20.8% | 13D | Aug 5, 2026 | filing ↗ | |
| Shopify Strategic Holdings 3 LLC | 20.8% | 13D | Aug 5, 2026 | filing ↗ | |
| Hallen Ed | 19.4% | 13G | Nov 5, 2025 | filing ↗ | |
| Summit Partners, L.P. | 12.0% | 13G | Nov 13, 2025 | filing ↗ | |
| Accomplice Fund I, L.P. | 10.5% | 13G | May 7, 2025 | filing ↗ | |
| Accomplice Associates I, LLC | 10.5% | 13G | May 7, 2025 | filing ↗ | |
| Jeff Fagnan | 10.5% | 13G | May 7, 2025 | filing ↗ | |
| Capital International Investors | 8.0% | 13G | May 14, 2026 | filing ↗ | |
| Summit Partners Growth Equity Fund IX-A, L.P. | 7.1% | 13G | Nov 13, 2025 | filing ↗ | |
| Li Ping | 5.6% | 13G | Feb 14, 2025 | filing ↗ | |
| BlackRock, Inc. | 5.3% | 13G | Jul 29, 2026 | filing ↗ | |
| Vanguard Portfolio Management | 5.2% | 13G | Apr 29, 2026 | filing ↗ | |
| Vanguard Capital Management | 5.0% | 13G | Jul 31, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| St. Ledger Susan | $37K | Sep 11, 2026 | filing ↗ |
| Hallen Ed | $2.0M | Aug 31, 2026 | filing ↗ |
| Landon Ramon Edmond | $163K | Aug 31, 2026 | filing ↗ |
| Landon Edmond | $1.0M | Aug 28, 2026 | filing ↗ |
| Summit Investors GE IX/VC IV (UK), L.P. | $37K | Aug 11, 2026 | filing ↗ |
| Summit Partners Co-Invest (KIWI) L.P. | $3.3M | Aug 11, 2026 | filing ↗ |
| Summit Investors GE Ix-Vc IV, LLC | $285K | Aug 11, 2026 | filing ↗ |
| Summit Partners Growth Equity Fund IX-B, L.P. | $33.9M | Aug 11, 2026 | filing ↗ |
| Summit Partners Growth Equity Fund IX-A, L.P. | $54.3M | Aug 11, 2026 | filing ↗ |
| Amanda Whalen | $565K | Jun 18, 2026 | filing ↗ |
| Andrew Bialecki | $3.2M | May 26, 2026 | filing ↗ |
| St. Ledger Susan | $133K | May 18, 2026 | filing ↗ |
| Landon Ramon Edmond | $180K | Apr 20, 2026 | filing ↗ |
| Amanda Whalen | $514K | Apr 16, 2026 | filing ↗ |
| Andrew Bialecki | $12.3M | Apr 7, 2026 | filing ↗ |
| Stephen E. Rowland | $95K | Mar 17, 2026 | filing ↗ |
| Landon Ramon Edmond | $285K | Mar 12, 2026 | filing ↗ |
| Stephen E. Rowland | $96K | Mar 5, 2026 | filing ↗ |
| Andrew Bialecki | $21.4M | Feb 24, 2026 | filing ↗ |
| Landon Ramon Edmond | $1.2M | Dec 18, 2025 | filing ↗ |
| Amanda Whalen | $1.7M | Dec 18, 2025 | filing ↗ |
| Hallen Ed | $3.6M | Dec 17, 2025 | filing ↗ |
| Hallen Ed | $23K | Dec 15, 2025 | filing ↗ |
| Stephen Rowland | $424K | Dec 15, 2025 | filing ↗ |
| Andrew Bialecki | $38.0M | Dec 2, 2025 | filing ↗ |
| Landon Ramon Edmond | $396K | Nov 20, 2025 | filing ↗ |
| Galvin Carmel | $319K | Nov 17, 2025 | filing ↗ |
| Stephen Rowland | $203K | Nov 17, 2025 | filing ↗ |
| Amanda Whalen | $427K | Nov 14, 2025 | filing ↗ |
| Hallen Ed | $84K | Nov 11, 2025 | filing ↗ |
| Hallen Ed | $1.8M | Nov 10, 2025 | filing ↗ |
| Stephen Rowland | $174K | Oct 15, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Aug 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 5, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jul 13, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 13, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 9, 2026 | filing ↗ |
| Earnings (2.02) | May 1, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 1, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 1, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 1, 2026 | filing ↗ |
| Other events (8.01) | Mar 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 2, 2026 | filing ↗ |
| Earnings (2.02) | Feb 10, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 10, 2026 | filing ↗ |
| Officer/director changes (5.02) | Dec 8, 2025 | filing ↗ |
| Charter/bylaw changes (5.03) | Dec 8, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Dec 8, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 8, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Dec 2, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 2, 2025 | filing ↗ |
| Earnings (2.02) | Nov 5, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 5, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Sep 25, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 25, 2025 | filing ↗ |