Steven Klinsky

Steven Klinsky (born 1956) is a New York-based finance executive with an estimated net worth of ~$4.9B. SEC filings under “KLINSKY STEVEN B” show extensive reporting activity tied to New Mountain Finance Corp and multiple New Mountain Partners entities, indicating an ongoing role connected to those firms Wikidata SEC EDGAR.

Business & SEC Activity

SEC EDGAR links Klinsky to filings involving New Mountain Finance Corp (NMFC/NMFCZ) and several New Mountain Partners II entities (AIV-A/AIV-B), along with Bellerophon Therapeutics, Inc. (BLPH) SEC EDGAR. He has 169 total SEC filings, including 131 insider filings; Form 4 filings are reports insiders file to disclose changes in their ownership of a public company’s securities SEC EDGAR. Recent Form 4 activity includes filings dated 2026-03-03, 2026-03-05, and 2026-03-06 SEC EDGAR.

Political Activity

From 2023-09-28 to 2025-11-12, FEC data shows 100 contributions totaling $776,427.28 FEC. The party breakdown reported is $521,118.18 to Republican recipients and $255,309.10 to PAC/Other FEC. Top recipients include the NRSC ($266,700), NRCC ($82,000), Grow the Majority ($75,000), the Republican National Committee ($25,000), and Daines Senate Majority Fund ($17,000) FEC.

In the News

Recent coverage (2026-02-25 to 2026-03-07) focused on New Mountain Finance, including reports about a $0.25 quarterly dividend target and a $477M asset sale, and separate items describing insider purchases of NMFC stock attributed to Klinsky NewsAPI. The four headlines in this period came primarily from InsiderTrades.com (2), plus Seeking Alpha (1) and Investing.com (1) NewsAPI.