Insiders Trades

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AB

Andrew Bialecki

CEO

Chief Executive Officer

US·SEC (Form 4)

Insider activity · 24 months0 buys5 salesCumulative net flow

Nov 24 · 0 buys · 0 salesDec 24 · 0 buys · 0 salesJan 25 · 0 buys · 0 salesFeb 25 · 0 buys · 0 salesMar 25 · 0 buys · 0 salesApr 25 · 0 buys · 0 salesMay 25 · 0 buys · 0 salesJun 25 · 0 buys · 0 salesJul 25 · 0 buys · 0 salesAug 25 · 0 buys · 0 salesSept 25 · 0 buys · 0 salesOct 25 · 0 buys · 0 salesNov 25 · 0 buys · 0 salesDec 25 · 0 buys · 0 salesJan 26 · 0 buys · 0 salesFeb 26 · 0 buys · 0 salesMar 26 · 0 buys · 1 saleApr 26 · 0 buys · 3 salesMay 26 · 0 buys · 1 saleJun 26 · 0 buys · 0 salesJul 26 · 0 buys · 0 salesAug 26 · 0 buys · 0 salesSept 26 · 0 buys · 0 salesOct 26 · 0 buys · 0 sales

Total declarations

36

Company

1

▲ Purchases (0 ops.)

—

▼ Sales (5 ops.)

€12.1M

Latest filing published 28 May 2026 for Klaviyo, Inc.. Read the official filing

Filing timeline

BuySale

Andrew Bialecki

Insider track record

Disclosed buys

0

Disclosed sells

5

Not enough buy signals with a settled T+90 horizon to measure a track record yet.

Signal history

Andrew Bialecki: trading record in brief

All filings by Andrew Bialecki on record concern Klaviyo, Inc., in the capacity of chief executive. In total, 36 filings cover trades dated from 14 May 2025 to 26 May 2026.

Sales make up the whole of the open-market record (5 sales, €12.1M). 2026 to date brings no purchases and 5 sales.

The record was last updated on 28 May 2026 with an open-market sale (€2.7M) in Klaviyo, Inc. Filings reach the SEC (Form 4) feed a median of 2 days after the trade. The legal deadline for a Form 4 is two business days after the transaction. Sales are harder to read than purchases, since they often meet personal needs such as tax or diversification. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.

Companies and markets linked to Andrew Bialecki

Open company profiles for insider transactions, fundamentals and analyst consensus when available.

Klaviyo, Inc. (US)

Declarations36 total

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Andrew Bialecki

Co-Chief Executive OfficerExecutives26 May 2026Klaviyo, Inc.

212,529 sharesSeries A Common StockSEC:0001470831-26-000495:0

▼

Andrew Bialecki

Co-Chief Executive OfficerExecutives26 May 2026Klaviyo, Inc.

3M USD33SEC ↗

212,529 shares@ US$14.610.027% mcap100.0% of flowSeries A Common StockSEC:0001470831-26-000495:1

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Andrew Bialecki

Co-Chief Executive OfficerExecutives12 May 2026Klaviyo, Inc.

200,000 sharesSeries A Common StockSEC:0001470831-26-000440:0

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Andrew Bialecki

Co-Chief Executive OfficerExecutives14 Apr 2026Klaviyo, Inc.

200,000 sharesSeries A Common StockSEC:0001470831-26-000375:0

▼

Andrew Bialecki

Co-Chief Executive OfficerExecutives14 Apr 2026Klaviyo, Inc.

2M USD34SEC ↗

109,142 shares@ US$17.390.036% mcap28.8% of flowSeries A Common StockSEC:0001470831-26-000375:1

▼

Andrew Bialecki

Co-Chief Executive OfficerExecutives14 Apr 2026Klaviyo, Inc.

2M USD33SEC ↗

90,858 shares@ US$16.940.029% mcap23.4% of flowSeries A Common StockSEC:0001470831-26-000375:2

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Andrew Bialecki

Co-Chief Executive OfficerExecutives7 Apr 2026Klaviyo, Inc.

200,000 sharesSeries A Common StockSEC:0001470831-26-000355:0

▼

Andrew Bialecki

Co-Chief Executive OfficerExecutives7 Apr 2026Klaviyo, Inc.

4M USD26SEC ↗

200,000 shares@ US$18.6336.4% of flowSeries A Common StockSEC:0001470831-26-000355:1

●

Andrew Bialecki

Co-Chief Executive OfficerExecutives31 Mar 2026Klaviyo, Inc.

200,000 sharesSeries A Common StockSEC:0001470831-26-000342:0

▼

Andrew Bialecki

Co-Chief Executive OfficerExecutives31 Mar 2026Klaviyo, Inc.

4M USD25SEC ↗

200,000 shares@ US$19.4227.7% of flowSeries A Common StockSEC:0001470831-26-000342:1

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Andrew Bialecki

Co-Chief Executive OfficerExecutives24 Mar 2026Klaviyo, Inc.

200,000 sharesSeries A Common StockSEC:0001470831-26-000318:0

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Andrew Bialecki

Co-Chief Executive OfficerExecutives17 Mar 2026Klaviyo, Inc.

200,000 sharesSeries A Common StockSEC:0001470831-26-000299:0

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Andrew Bialecki

Co-Chief Executive OfficerExecutives10 Mar 2026Klaviyo, Inc.

206,827 sharesSeries A Common StockSEC:0001470831-26-000262:0

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Andrew Bialecki

Co-Chief Executive OfficerExecutives3 Mar 2026Klaviyo, Inc.

200,000 sharesSeries A Common StockSEC:0001470831-26-000247:0

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Andrew Bialecki

Co-Chief Executive OfficerExecutives24 Feb 2026Klaviyo, Inc.

200,000 sharesSeries A Common StockSEC:0001470831-26-000222:0

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Andrew Bialecki

Co-Chief Executive OfficerExecutives27 Jan 2026Klaviyo, Inc.

155,219 sharesSeries A Common StockSEC:0001470831-26-000061:0

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Andrew Bialecki

Co-Chief Executive OfficerExecutives20 Jan 2026Klaviyo, Inc.

167,926 sharesSeries A Common StockSEC:0001470831-26-000051:0

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Andrew Bialecki

Co-Chief Executive OfficerExecutives13 Jan 2026Klaviyo, Inc.

140,646 sharesSeries A Common StockSEC:0001470831-26-000037:0

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Andrew Bialecki

Co-Chief Executive OfficerExecutives6 Jan 2026Klaviyo, Inc.

137,504 sharesSeries A Common StockSEC:0001470831-26-000022:0

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Andrew Bialecki

Chief Executive OfficerExecutives22 Dec 2025Klaviyo, Inc.

100,000 sharesSeries A Common StockSEC:0001470831-25-000452:0

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Andrew Bialecki

Chief Executive OfficerExecutives16 Dec 2025Klaviyo, Inc.

138,648 sharesSeries A Common StockSEC:0001470831-25-000431:0

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Andrew Bialecki

Chief Executive OfficerExecutives9 Dec 2025Klaviyo, Inc.

131,362 sharesSeries A Common StockSEC:0001470831-25-000395:0

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Andrew Bialecki

Chief Executive OfficerExecutives2 Dec 2025Klaviyo, Inc.

142,045 sharesSeries A Common StockSEC:0001470831-25-000382:0

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Andrew Bialecki

Chief Executive OfficerExecutives24 Nov 2025Klaviyo, Inc.

144,717 sharesSeries A Common StockSEC:0001470831-25-000372:0

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Andrew Bialecki

Chief Executive OfficerExecutives18 Nov 2025Klaviyo, Inc.

147,329 sharesSeries A Common StockSEC:0001470831-25-000359:0

25 of 36 declarations