Form4insider filings, from the source

Company · CIK 0001835830 · SIC 7372 — Services-Prepackaged Software · NYSE

Klaviyo, Inc. · KVYO

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $3.3M · 4net −$3.3M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesAug 26Aug 31Sep 5Sep 10Sep 16Sep 21Sep 26

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 24, 2026 SForm 4 →Sep 25, 5:50 pm EDTEd HallenDirector, 10% Owner1,300$17.02$22,126446,946−0.29%10b5-1
Sep 15, 2026 AForm 4 →Sep 17, 6:14 pm EDTErica Ellen SmithChief Financial Officer1,150,684——1,150,684—
Sep 11, 2026 SForm 4 →Sep 14, 4:49 pm EDTSusan St. LedgerDirector2,328$15.93$37,08523,433−9.04%10b5-1
Aug 31, 2026 GForm 4 →Sep 1, 8:18 pm EDTEd HallenDirector, 10% Owner17,885——447,746—10b5-1
Aug 31, 2026 SForm 4 →Sep 1, 8:18 pm EDTEd HallenDirector, 10% Owner98,782$20.48$2,023,260465,631−17.5%10b5-1
Aug 28, 2026 SForm 4 →Sep 1, 8:16 pm EDTLandon EdmondChief Legal Officer61,576$20.07$1,235,620477,866−11.4%10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 31, 2026 XForm 4 →Aug 31, 5:35 pm EDTShopify Strategic Holdings 3 LLC +110% Owner688,766$0.01$3,44417,317,491—