Klaviyo KVYO Insider Ownership

NYSE KVYO

$17.08 -1.01 (-5.58%)

As of: Oct 16, 2026 · 10:56 AM EDT

Insider Holdings by Owner

142.88Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

56.96%

▼-1.38% pp QoQ

Shares Held by Insiders

169.09Mn

filed for Sep 2026

▼-2.36% QoQ

Shares Outstanding

296.85Mn

296,851,806 shares

Direct Holdings

123.19Mn

Indirect: 45.90Mn

Net Shares Traded (QoQ)

-4.08Mn

net selling in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 11, 2026

Over the past year, KVYO insiders bought $300,311 of stock (16.34K shares) and sold $197.44 million (9.85Mn shares) on the open market.

A count shows one insider buying KVYO stock on the open market over the past 12 months and 8 insiders selling.
Among Klaviyo insiders, Jennifer Ceran (Director) led open-market buying over the past 12 months with $300,311 of purchases (16.34K shares); the latest was on February 12, 2026.
Conversely, Andrew Bialecki (Co-Chief Executive Officer) was KVYO's largest open-market seller in the past 12 months, with $92.59 million of sales (4.15Mn shares); the latest was on May 26, 2026.
The newest open-market trade among Klaviyo insiders came on October 7, 2026, when Ed Hallen (Director and 10% owner) made a sale of 97.48K shares for $1.7 million.
Apart from open-market trades, KVYO insiders received 4.58Mn shares in stock awards, acquired 12.83Mn shares through option exercises and conversions, gave up 518.38K shares to cover taxes or exercise prices and gave away 3.5Mn shares as gifts in the past 12 months.
Per Business Quant, KVYO insiders together hold 168.98Mn shares based on their latest Form 4 filings, down 2.43% from 173.18Mn shares at the end of Q2 2026.
Indirect holdings, through trusts, partnerships, family members and other entities, make up 27.10% (45.79Mn shares) of Klaviyo's insider total, with the other 72.90% (123.19Mn shares) held directly.
The insider holdings in Klaviyo belong to 15 insiders who have reported on Form 4 within the past two years.
KVYO's three largest insider shareholders, per their latest Form 4 filings, are Andrew Bialecki (Co-Chief Executive Officer, 75.28Mn shares), Summit Partners L.P. (10% owner, 36.71Mn shares) and Ed Hallen (Director and 10% owner, 32.42Mn shares).
Of the shares held by KVYO insiders, 44.55% belong to Andrew Bialecki.
A total of 80 Form 4 filings with transactions in Klaviyo stock were made over the past 12 months, by 14 insiders.
This summary of Klaviyo insider activity covers Form 4 filings through October 9, 2026.

Form 4 Holdings

Insiders Holding KVYO

Insiders 18

Shares held 142.88Mn

Of outstanding 48.13%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Andrew Bialecki	Co Chief Executive Officer	66,731,589	0	66,731,589	46.7%	28 May, 2026
2	Ed Hallen	Director, TenPercentOwner	31,999,106	425,536	32,424,642	22.7%	09 Oct, 2026
3	Strategic Holdings 3 Llc Shopify	TenPercentOwner	17,317,491	0	17,317,491	12.1%	31 Aug, 2026
4	Partners L P Summit	TenPercentOwner	0	13,852,778	13,852,778	9.7%	13 Aug, 2026
5	Capital Abeh, Llc Astral	TenPercentOwner	5,129,342	0	5,129,342	3.6%	15 Feb, 2024
6	Gomez Luciano Fernandez	Co Chief Executive Officer	2,350,572	0	2,350,572	1.6%	18 Aug, 2026
7	Erica Ellen Smith	Chief Financial Officer	1,150,684	0	1,150,684	0.8%	17 Sep, 2026
8	Amanda Whalen	Chief Financial Officer	1,064,827	0	1,064,827	0.7%	18 Aug, 2026
9	Carmel Galvin	Chief People Officer	907,458	0	907,458	0.6%	18 Aug, 2026
10	Stephen Eric Rowland	President	793,478	0	793,478	0.6%	17 Dec, 2025
11	Landon Edmond	Chief Legal Officer	477,866	0	477,866	0.3%	01 Sep, 2026
12	Allen Chaves	Chief Technology Officer	259,047	0	259,047	0.2%	18 Sep, 2024
13	Jennifer Ceran	Director	165,846	0	165,846	0.1%	11 Jun, 2026
14	Tony Weisman	Director	104,174	0	104,174	0.1%	11 Jun, 2026
15	Ledger Susan St.	Director	73,599	0	73,599	0.1%	14 Sep, 2026
16	Roxanne Oulman	Director	0	46,666	46,666	0.0%	24 Jul, 2026
17	Fund I, L.P. Accomplice	TenPercentOwner	26,720	0	26,720	0.0%	23 Oct, 2023
18	Jeff Fagnan	TenPercentOwner	0	3,900	3,900	0.0%	10 Apr, 2025

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

648 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
07 Oct, 2026	Ed Hallen	Director, TenPercentOwner	Disposed S	38,667	$17.40	$672.81K	55,290	Indirect
07 Oct, 2026	Ed Hallen	Director, TenPercentOwner	Disposed S	58,815	$17.40	$1.02Mn	388,131	Indirect
08 Oct, 2026	Ed Hallen	Director, TenPercentOwner	Disposed G	17,885	$0.00	$0	370,246	Indirect
24 Sep, 2026	Ed Hallen	Director, TenPercentOwner	Disposed S	500	$17.02	$8.51K	93,957	Indirect
24 Sep, 2026	Ed Hallen	Director, TenPercentOwner	Disposed S	800	$17.02	$13.62K	446,946	Indirect
15 Sep, 2026	Erica Ellen Smith	Chief Financial Officer	Acquired A	821,917	$0.00	$0	821,917	Direct
15 Sep, 2026	Erica Ellen Smith	Chief Financial Officer	Acquired A	328,767	$0.00	$0	1,150,684	Direct
11 Sep, 2026	Ledger Susan St.	Director	Disposed S	2,328	$15.93	$37.09K	23,433	Direct
31 Aug, 2026	Ed Hallen	Director, TenPercentOwner	Disposed S	39,167	$20.47	$801.75K	94,457	Indirect
28 Aug, 2026	Landon Edmond	Chief Legal Officer	Disposed S	53,473	$20.01	$1.07Mn	485,969	Direct
31 Aug, 2026	Ed Hallen	Director, TenPercentOwner	Disposed S	59,615	$20.49	$1.22Mn	465,631	Indirect
31 Aug, 2026	Landon Edmond	Chief Legal Officer	Disposed S	8,103	$20.44	$165.63K	477,866	Direct
31 Aug, 2026	Ed Hallen	Director, TenPercentOwner	Disposed G	17,885	$0.00	$0	447,746	Indirect
31 Aug, 2026	Strategic Holdings 3 Llc Shopify	TenPercentOwner	Disposed X	344,383	$0.00	$0	1,377,529	Direct
31 Aug, 2026	Strategic Holdings 3 Llc Shopify	TenPercentOwner	Acquired X	344,383	$0.01	$3.44K	17,317,491	Direct
15 Aug, 2026	Carmel Galvin	Chief People Officer	Disposed F	30,541	$18.49	$564.70K	907,458	Direct
15 Aug, 2026	Gomez Luciano Fernandez	Co Chief Executive Officer	Acquired C	7,001	—	—	2,330,706	Direct
14 Aug, 2026	Amanda Whalen	Chief Financial Officer	Disposed S	14,000	$18.47	$258.58K	824,192	Direct
15 Aug, 2026	Landon Edmond	Chief Legal Officer	Disposed F	22,342	$18.49	$413.10K	539,442	Direct
15 Aug, 2026	Gomez Luciano Fernandez	Co Chief Executive Officer	Disposed F	29,133	$18.49	$538.67K	2,301,573	Direct

Showing 1 to 20 of 648 transactions