← All Profiles
JT
Joseph Tsai
businessman
D
21
Giving Score
uses a net worth as of 2019
~$9.5B
Est. Net Worth (as of 2019)
Source: Wikidata — retrieved 10/11/2026 (wikidata)Dispute
Source: Wikidata — retrieved 10/11/2026 (wikidata)Dispute
Profile Summary
A net worth stated in this summary may be out of date.
Joseph Tsai is a Canadian-born businessman, born in 1964, with an estimated net worth of ~$9.5B Wikidata. News coverage identifies him as an Alibaba co-founder and chairman, and as a co-owner of the Brooklyn Nets and New York Liberty with Clara Wu Tsai NewsAPI.
Business & SEC Activity
SEC records associate Tsai with 12 insider-related filings and companies including Alibaba Group Holding, Weibo, AutoNavi Holdings, SoftBank Group, and Ali ET Investment Holding SEC EDGAR. His recent filings include Form 4 reports in March, April, and June 2026; Form 4 reports changes in an insider's ownership of a company's securities. The records also include a 2026 Form 3, which is an initial statement of an insider's securities ownership, and annual Schedule 13G amendments from 2017 through 2023, which update a passive investor's reported beneficial ownership SEC EDGAR.
Philanthropy
The Tsai Family Foundation, based in Los Altos Hills, California, reported $105,629 in assets, $30,101 in revenue, $14,825 in expenses, and $13,800 in grants paid for tax year 2023 ProPublica 990.
Political Activity
Federal Election Commission records show 85 contributions totaling $10,365.78 from October 2004 through October 2025 FEC. The reported total includes $4,588.02 categorized as Unknown, $3,977.76 to Democratic recipients, and $1,800 to Republican recipients FEC. Listed recipients include Djou for Hawaii ($1,550), ActBlue ($1,396.52), Warnock for Georgia ($1,000), Jon Ossoff for Senate ($1,000), and the American College of Radiology Association ($1,000) FEC.
These donations are matched to this person by name only, so some may belong to a different person with the same name: FEC filings can include a donor's employer and city, but our matching does not check them against what we know about this person.
In the News
An August 2026 news report said that Tsai and Clara Wu Tsai were ending their nearly 30-year marriage. The report said a spokesperson described the decision as mutual and said both would remain committed to their business roles and philanthropic work NewsAPI.
U.S. Presence
otherU.S. economic presence
Philanthropy
Foundations are matched to a person by name, not by trustee records — so a same-surname family foundation can land here in error. Every entity below links to its full IRS filing; if one doesn’t belong, tell us at hello@skylarkcreations.com and we’ll pull it.
$106KFoundation Assets
$14KGrants Paid
1Foundation
Tsai Family FoundationLos Altos Hls, CA
Private independent foundation (IRS NTEE T22)
Assets: $106KRevenue: $30KGrants: $14KTax Year: 2023
Mission, purpose & full 990 filings → ProPublica Nonprofit ExplorerPolitical Contributions
$10KTotal Contributed
85Contributions
2004–2025Date Range
By Party
Every party on file is listed here. The bars are rounded for display; unrounded they total exactly $10,365.78.
Top Recipients
DJOU FOR HAWAII$2K
ACTBLUE$1K
WARNOCK FOR GEORGIA$1K
JON OSSOFF FOR SENATE$1K
AMERICAN COLLEGE OF RADIOLOGY ASSOCIATION$1K
Matched by name only. These donations are matched to this person by name only, so some may belong to a different person with the same name: FEC filings can include a donor's employer and city, but our matching does not check them against what we know about this person.
SEC Filings
12Total Filings
12Insider Filings
104EDGAR Mentions
0001633999Personal 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
44
6/2/202644
4/3/202633
3/18/2026SC 13G/ASC 13G/A
2/14/2023SC 13G/ASC 13G/A
2/14/2022SC 13G/ASC 13G/A
2/16/2021SC 13G/ASC 13G/A
2/14/2020SC 13G/ASC 13G/A
2/14/2019SC 13G/ASC 13G/A
2/14/2018SC 13G/ASC 13G/A
2/14/2017News Coverage
Coverage window: 2026-08-01 · retrieved 8/22/2026
Score Breakdown
D
21
Giving score
uses a net worth as of 2019
The giving score 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
Data coverage35% weight
How much sourced public record we hold about this person — net worth, SEC filings, foundation 990s, news coverage, Wikidata. It measures our coverage, not how open the person is. Each further kind of record scores higher, up to eight. Political donation records matched to a person by name alone are not counted: they may belong to someone else with the same name. From October 7, 2026, our own AI-written summary and the profile photo are not counted either — neither is a public record — so grades that leaned on them moved down that day.
Data: SEC EDGAR, ProPublica 990s, GDELT / NewsAPI, Wikidata
Formula (v2): Giving score = 65% x Philanthropy + 35% x Data coverage
Scored on 10/16/2026 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. View on Wikidata