Massivemarkets

SEC Form 4

Klaviyo, Inc. (KVYO) insider trading

In the 12 months to Oct 26, 2026, 8 KVYO insiders reported open-market sales of $193.3M across 51 filings; one director bought $300.3K.

Latest filing · Last 12 months · Source: SEC EDGAR · How we count

Open-market sales
$193.3M
51 filings · 8 insiders
Open-market purchases
$300.3K
1 filing · Jennifer Ceran, Director
Pre-arranged sales (10b5-1)
50 of 51
$104.7M of $193.3M sold (54%)

Who traded KVYO, and when

  • Purchase
  • Sale
  • Sale, pre-arranged (10b5-1)

KVYO daily close from Oct 27, 2025 to Oct 26, 2026, between $12.86 and $33.26, last $20.56. 51 sale and 1 purchase filings by 9 insiders, marked at their filing dates. Andrew Bialecki, Chief Executive Officer → Co-Chief Executive Officer: sold $88.6M across 22 filings, first filed Nov 13, 2025, last May 28, 2026. SUMMIT INVESTORS GE IX/VC IV, LLC, 10% owner: sold $88.6M across 1 filing, first filed Aug 13, 2026, last Aug 13, 2026. Ed Hallen, Director: sold $9.2M across 6 filings, first filed Nov 12, 2025, last Oct 9, 2026. Landon Edmond, Chief Legal Officer: sold $3.1M across 7 filings, first filed Nov 21, 2025, last Sep 1, 2026. Amanda Whalen, Chief Financial Officer: sold $2.9M across 10 filings, first filed Nov 18, 2025, last Aug 18, 2026. Stephen Eric Rowland, President: sold $403.8K across 2 filings, first filed Nov 18, 2025, last Dec 17, 2025. Jennifer Ceran, Director: bought $300.3K across 1 filing, first filed Feb 17, 2026, last Feb 17, 2026. 2 others: sold $477.2K across 3 filings, first filed Nov 18, 2025, last Sep 14, 2026.

Largest mark · tap a row for others

SUMMIT INVESTORS GE IX/VC IV, LLC · 10% owner

Sale $88,550,000

5,000,000 shares at $17.71 avg

Filed Aug 13, 2026 · traded Aug 11

Close on filing date $19.22

KVYO daily closelast $20.56

Andrew Bialecki · Chief Executive Officer → Co-Chief Executive Officer

$88.6M sold

SUMMIT INVESTORS GE IX/VC IV, LLC · 10% owner

$88.6M sold

Ed Hallen · Director

$9.2M sold

Landon Edmond · Chief Legal Officer

$3.1M sold

Amanda Whalen · Chief Financial Officer

$2.9M sold

Stephen Eric Rowland · President

$403.8K sold

Jennifer Ceran · Director

$300.3K bought

2 others

$477.2K sold
One row per insider, smaller filers combined; marks sit at the SEC filing date, sized by dollar value.

Open-market trades

52 filings in the last 12 months
Other insider activity (not market trades) · 84 records
  • Tax withholding18 records
  • Grants and awards14 records
  • Gifts5 records
  • Other47 records

Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.

How to read this page

Open-market purchase or sale
A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
Pre-arranged (10b5-1)
The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
Role
The title on each filing. Someone whose title changed shows more than one.
Filing date
Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Counted once
When several owners (a fund and its partners, say) report the same trade, it's counted once. Corrected filings replace the originals.

Frequently asked questions

Has Klaviyo, Inc.'s CEO sold stock?

Yes. Andrew Bialecki (CEO) sold 3,982,817 shares ($88.6M) between Nov 2025 and May 2026, all under a pre-arranged 10b5-1 plan. Gomez Luciano Fernandez (CEO) made no open-market sales filed as CEO in the last 12 months.

How current is KVYO’s insider data?

These are KVYO Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.

What counts as an open-market buy or sell?

Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.

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Track KVYO insider trades with your agent

This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:

Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for KVYO every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.

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