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Leonard Stern

American businessman

New YorkReal Estate
D
22
Giving Score
uses a net worth as of 2025
Compare Leonard Stern with another billionaire →

AIProfile Summary

A net worth stated in this summary may be out of date.

Leonard Stern is an American businessman in the real-estate industry, born in 1938 and based in New York. His estimated net worth is ~$8.3B Wikidata.

Business & SEC Activity

SEC EDGAR search data returned filings for Starboard Value LP, including 485 insider filings among 893 total filings. Recent records include Form 144 notices, which report proposed sales of restricted or control securities; a Form 4, which reports an insider's transaction in company securities; and amendments to Schedule 13D, a disclosure for investors reporting significant ownership stakes SEC EDGAR.

Philanthropy

The data lists three organizations named Stern Foundation, in Virginia, Texas, and New York. Their reported assets total $1,800,159 and grants paid total $110,166 across the listed tax years; the Virginia foundation reported $53,458 in grants in 2024, while the Texas and New York foundations reported $21,532 and $35,176, respectively, in 2023 ProPublica 990.

Political Activity

FEC data shows at least 100 federal contributions; the figures below cover only the 100 most recent records on file, dated January 5, 2025, through July 29, 2026. Those sampled contributions total $128,043: $62,543 was categorized as Unknown, $45,000 as Republican, and $20,500 as Democratic FEC. The largest listed recipients in the sample were Smith Victory ($50,000), the NRCC ($38,000), Torres Victory Fund ($7,000), Torres for Congress ($7,000), and Jason Smith for Congress ($7,000) 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.

AI-generated summary from sec_edgar, gdelt, propublica_990, wikidata, fec — 9/13/2026 (gpt-5.6-terra). All claims are derived from the source data shown below.

USU.S. Presence

otherU.S. economic presence

990Philanthropy

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.

$1.8MFoundation Assets
$110KGrants Paid
3Foundations
Stern FoundationMechanicsvlle, VA
Assets: $907KRevenue: $86KGrants: $53KTax Year: 2024
Mission, purpose & full 990 filings → ProPublica Nonprofit Explorer
Stern FoundationDallas, TX
Assets: $558KRevenue: $18KGrants: $22KTax Year: 2023
Mission, purpose & full 990 filings → ProPublica Nonprofit Explorer
Stern FoundationMonsey, NY
Private grantmaking foundation (IRS NTEE T20)
Assets: $335KRevenue: $10KGrants: $35KTax Year: 2023
Mission, purpose & full 990 filings → ProPublica Nonprofit Explorer
Source: ProPublica (990) — annual filing · latest on record (retrieved 8/1/2026) (proPublica_990)Dispute

FECPolitical Contributions

$128K+In Records We Hold
1003Contributions On File
2025–2026Range Shown

These figures cover the 100 most recent of 1,003 federal contributions on file, not the full record. The total, party split, top recipients and dates below are all computed over that sample, so each is a floor rather than a complete figure.

By Party (in the sample)

Unknown
$63K
Republican
$45K
Democratic
$21K

Every party in this sample is listed here. The bars are rounded for display; unrounded they total exactly $128,043.

Top Recipients (in the sample)

SMITH VICTORY$50K
NRCC$38K
TORRES VICTORY FUND$7K
TORRES FOR CONGRESS$7K
JASON SMITH FOR CONGRESS$7K

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.

Source: FEC — contribution filings · latest on record (retrieved 9/12/2026) (fec)Dispute

SECSEC Filings

893Total Filings
485Insider Filings
460EDGAR Mentions

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

144xsl144X01/primary_doc.xml
6/2/2026
144xsl144X01/primary_doc.xml
5/8/2026
144xsl144X01/primary_doc.xml
3/30/2026
144xsl144X01/primary_doc.xml
7/7/2025
144xsl144X01/primary_doc.xml
6/16/2025
144xsl144X01/primary_doc.xml
5/30/2025
144xsl144X01/primary_doc.xml
5/27/2025
4xslF345X05/e664525_4-actg.xml
5/16/2025
SC 13D/AAMENDMENT NO. 3 TO THE SCHEDULE 13D
12/10/2024
SC 13D/AAMENDMENT NO. 1 TO THE SCHEDULE 13D
12/9/2024
Source: SEC EDGAR — regulatory filings · latest on record (retrieved 6/27/2026) (sec_derived)Dispute

SCOREScore Breakdown

D
22
Giving score
uses a net worth as of 2025

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
1%

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
63%

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