Leonard Schleifer
Profile Summary
Leonard Schleifer is a U.S. healthcare figure born in 1952 and associated with New York. He has an estimated net worth of ~$2.8 billion RTB. SEC EDGAR records identify him in filings connected to Regeneron Pharmaceuticals, Inc. SEC EDGAR
Business & SEC Activity
SEC EDGAR lists 72 insider filings for Schleifer. These include Form 4 filings, which report changes in an insider’s ownership of company securities, and Form 144 filings, which notify regulators of a proposed sale of restricted or control securities SEC EDGAR.
Philanthropy
The Schleifer Family Foundation reported $13.2 million in total assets, $3.0 million in grants paid, and $3.0 million in expenses for tax year 2023. Its reported revenue was $78,837 ProPublica 990.
Political Activity
FEC records show at least 100 federal contributions; the available figures cover only the most recent 100 records, not the full history. In that sample, contributions totaled $419,925.93, including $166,589.48 to Democratic recipients, $436.85 to DFL recipients, and $252,899.60 categorized as PAC/Other; top recipients included SMP at $120,000, the Hillary Victory Fund at $52,700, and the DSCC and Senate Majority PAC at $50,000 each FEC.
U.S. 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.
Political Contributions
These figures cover the 100 most recent 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)
Top Recipients (in the sample)
Matched by name only. These are the donations the FEC lists under this person’s name — so a different person with the same name can show up here too.
SEC Filings
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
Score Breakdown
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.
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
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 8/31/2026 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.