Klaviyo, Inc. (KVYO)
NYSE: KVYO · Services-Prepackaged Software · Boston, MA · filing with the SEC since 2020
Grade5.8
◀ Past 5.1● Present 6.0▶ Future 6.2
Who owns Klaviyo, Inc.
As filed with the SECHolders of 5% or more
9
Bialecki Andrew holds 36.5% of Series A common stock, par value $0.001 per share (the "Series A Common Stock"), as its SCHEDULE 13G/A filed Aug 5, 2026 says.
Directors and officers
12
report now, of 15 people on the record since 2023. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 9 named at left.
Holders of 5% or moreshare of the class, as filed
Bialecki Andrew
SCHEDULE 13G/A · filed Aug 5, 2026 · Series A common stock, par value $0.001 per share (the "Series A Common Stock") · 35.1% in Feb 10, 2026
Shopify Inc.
SCHEDULE 13D/A · filed Aug 31, 2026 · Series A Common Stock · 18.9% in Nov 14, 2025
Hallen Ed
SCHEDULE 13G/A · filed Nov 5, 2025 · Series A common stock, par value $0.001 per share (the "Series A Common Stock")
Summit Partners, L.P.
SCHEDULE 13G/A · filed Nov 13, 2025 · Series A Common Stock, par value $0.001 per share · 20.9% in Aug 8, 2025
Accomplice Fund I, L.P.
SCHEDULE 13G/A · filed May 7, 2025 · Series A Common Stock, $0.01
Capital International Investors
SCHEDULE 13G/A · filed May 14, 2026 · Common Stock · 9.3% in Feb 13, 2026
Blackrock, Inc.
SCHEDULE 13G · filed Jul 29, 2026 · Series A Common Stock
Vanguard Portfolio Management
SCHEDULE 13G · filed Apr 29, 2026 · Common Stock
Vanguard Capital Management
SCHEDULE 13G · filed Jul 31, 2026 · Common Stock
Sands Frank M.
SCHEDULE 13G/A · filed May 14, 2025 · Series A Common Stock, par value $0.001 per share · reported falling below 5%
Ping Li ("PL")
SCHEDULE 13G/A · filed May 13, 2025 · Series A common stock, par value $0.001 per share · reported falling below 5%, from 5.6% in Feb 14, 2025
Fmr LLC
SCHEDULE 13G/A · filed Aug 6, 2026 · CLASS A COMMON STOCK · reported falling below 5%, from 6.7% in Nov 5, 2025
AllianceBernstein L.P.
SCHEDULE 13G/A · filed May 14, 2025 · Common Stock · reported falling below 5%, from 5.1% in Feb 5, 2025
Morgan Stanley
SCHEDULE 13G/A · filed Mar 6, 2026 · Series A Common Stock · reported falling below 5%, from 10.5% in Jan 8, 2026
Capital Research Global Investors
SCHEDULE 13G/A · filed Feb 13, 2025 · Common Stock · reported falling below 5%
Clearbridge Investments, LLC
SCHEDULE 13G/A · filed Oct 31, 2024 · Series A common stock, par value $0.001 per share · reported falling below 5%
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%, from 10.2% in Jul 7, 2025
What KVYO reports owning in othersstakes of 5% or more, and other ties
9 subsidiaries in 8 countries, from the list filed with the 10-K filed Feb 10, 2026.
Insider tradesForm 4
91sales
1purchases
91sales on a scheduled plan
8people selling
$107Msold, in dollars
$300,000bought, in dollars
Open-market trades on Form 4 from Nov 9, 2025 to Nov 9, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 9, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window10 of 35 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Bialecki Andrew | Co-Chief Executive Officer | 39 | $88.6M | 39 | 0 | $0 |
| Summit Partners Co-Invest (Kiwi), LP | 10% owner | 1 | $88.6M | 0 | 0 | $0 |
| Hallen Ed | Chief Product Officer | 18 | $11.3M | 18 | 0 | $0 |
| Edmond Landon | Chief Legal Officer | 11 | $3.1M | 11 | 0 | $0 |
| Whalen Amanda | Chief Financial Officer | 15 | $2.9M | 15 | 0 | $0 |
| Rowland Stephen Eric | President | 3 | $400,000 | 3 | 0 | $0 |
| Galvin Carmel | Chief People Officer | 2 | $300,000 | 2 | 0 | $0 |
| Oulman Roxanne | director | 1 | $300,000 | 1 | 0 | $0 |
| St. Ledger Susan | director | 2 | $200,000 | 2 | 0 | $0 |
| Ceran Jennifer | director | 0 | $0 | 0 | 1 | $300,000 |