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AB
Andrew Bialecki
MassachusettsTechnology
D
26.4
PBS
~$1.8B
Profile Summary
Andrew Bialecki (born 1985) is a U.S. technology executive based in Massachusetts and associated with Klaviyo, Inc. (NYSE: KVYO). He has an estimated net worth of ~$1.8B. SEC records show he is an insider at Klaviyo with frequent insider filings under his name. RTB SEC EDGAR
Business & SEC Activity
Bialecki is linked to Klaviyo, Inc. (CIK 0001835830; ticker KVYO) through SEC EDGAR filings, including 28 insider filings out of 31 total filings. Form 4 filings report changes in an insider’s ownership of company stock, and his recent Form 4 activity includes filings dated 2026-03-05, 2026-02-26, and multiple dates in early 2026 and late 2025. A Form 144 filing dated 2026-02-24 indicates a notice related to the potential sale of restricted or control securities. SEC EDGAR
Philanthropy
The Bialecki Kidney Cancer Foundation (EIN 431902816) reported $1,621,401 in total assets for tax year 2018, along with $4,615 in grants paid. In that year it reported $4,633 in total revenue and $5,815 in total expenses. ProPublica 990
Political Activity
From 2021-12-18 to 2025-12-04, Bialecki had 23 recorded federal contributions totaling $204.04, with top recipients ActBlue ($186) and MoveOn.org Political Action ($18.04). The available party breakdown is categorized as Unknown for the full amount. FEC
In the News
Recent coverage includes multiple items on 2026-03-09 about Klaviyo and Shopify deepening their integration, reported by outlets including CRM Magazine, Barchart.com, and wallstreet:online. Business Insider (2026-03-09) published a profile-style article about Bialecki’s work schedule and preferences. InsiderTrades.com (2026-03-06) reported on a sale of 200,000 Klaviyo shares attributed to CEO Andrew Bialecki. NewsAPI
U.S. Presence
residenceBoston, Massachusetts
Philanthropy
$1.6MFoundation Assets
$6KGrants Paid
1Foundation
Bialecki Kidney Cancer FoundationSaint Louis, MO
Public foundation (IRS NTEE T30)
Assets: $1.6MRevenue: $5KGrants: $6KTax Year: 2018
Mission, purpose & full 990 filings → ProPublica Nonprofit ExplorerPolitical Contributions
$204.04Total Contributed
23Contributions
2021–2025Date Range
By Party
Top Recipients
ACTBLUE$186
MOVEON.ORG POLITICAL ACTION$18.04
SEC Filings
42Total Filings
39Insider Filings
212EDGAR Mentions
0001991099Personal CIK
Associated Companies
Entities appearing alongside this person in SEC full-text search — an association, not necessarily ownership or control. Follow each link to the primary SEC record to judge for yourself.
Recent Insider Filings
4FORM 4
5/28/2026144xsl144X01/primary_doc.xml
5/26/20264FORM 4
5/20/20264FORM 4
5/14/20264FORM 4
4/16/20264FORM 4
4/9/2026144xsl144X01/primary_doc.xml
4/7/20264FORM 4
4/2/20264FORM 4
3/26/20264FORM 4
3/19/2026Recent News
34Total Articles
CRM MagazineTop Source
PositiveAvg. Sentiment
Score Breakdown
D
26.4
Public Benefit Score
The PBS is a weighted average of 2 components. The formula is open and versioned — the weight percentages below show how much each component contributes to the final score.
Philanthropy65% weight
Evidenced charitable giving — built on what they actually give each year, not parked assets. Dominated by generosity (annual giving relative to net worth — the share of your fortune you give), plus the absolute scale of that giving, plus a small nudge for signing the Giving Pledge (a commitment, not a realized action).
Data: ProPublica 990 charitable disbursements, net worth, The Giving Pledge registry
Transparency35% weight
How much sourced, public accountability data exists — net worth, political contributions, SEC filings, foundation 990s, news coverage, and a verified profile. More public disclosure scores higher.
Data: FEC, SEC EDGAR, ProPublica 990s, GDELT / NewsAPI, Wikidata
Formula (v2): PBS = 65% x Philanthropy + 35% x Transparency
Scored on 6/23/2026 on a 0–100 scale. The score uses only the signals we have populated data for. Goal Impact, Controversy, and Community Approval are deferred until that data exists — Phase 1 goal adoption, controversy detection, and community votes respectively.
All data is sourced from public records. Each section links to its original source.