Steven B Klinsky insider trades: New Mountain Finance (NMFC) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Steven reports to the SEC
and 6 more companies
Open-market buys and sales
85 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Mar 11, 2026 | NMFC | ↑ Buy | 500,000 | $8.05 | $4.0M | See Note | Mar 12, 2026 (1d) |
| Mar 5, 2026 | NMFC | ↑ Buy | 237,873 | $8.10 | $1.9M | See Note | Mar 6, 2026 (1d) |
| Mar 4, 2026 | NMFC | ↑ Buy | 437,400 | $8.04 | $3.5M | See Note | Mar 5, 2026 (1d) |
| Mar 2, 2026 | NMFC | ↑ Buy | 324,727 | $7.75 | $2.5M | See Note | Mar 3, 2026 (1d) |
| Sep 16, 2025 | NMFC | ↑ Buy | 106,691 | $9.78 | $1.0M | See Note | Sep 18, 2025 (2d) |
| Dec 17, 2024 | NMFC | ↑ Buy | 72,280 | $11.28 | $816K | See Note | Dec 19, 2024 (2d) |
| Dec 16, 2024 | NMFC | ↑ Buy | 100,502 | $11.74 | $1.2M | See Note | Dec 17, 2024 (1d) |
| Dec 12, 2024 | NMFC | ↑ Buy | 31,597 | $11.74 | $371K | See Note | Dec 13, 2024 (1d) |
| Dec 6, 2024 | NMFC | ↑ Buy | 34,018 | $11.74 | $399K | See Note | Dec 9, 2024 (3d) |
| Dec 3, 2024 | NMFC | ↑ Buy | 6,200 | $11.75 | $73K | See Note | Dec 5, 2024 (2d) |
| Nov 26, 2024 | NMFC | ↑ Buy | 2,400 | $11.74 | $28K | See Note | Nov 29, 2024 (3d) |
| Nov 22, 2024 | NMFC | ↑ Buy | 36,721 | $11.71 | $430K | See Note | Nov 26, 2024 (4d) |
| Nov 21, 2024 | NMFC | ↑ Buy | 89,044 | $11.56 | $1.0M | See Note | Nov 22, 2024 (1d) |
| Nov 19, 2024 | NMFC | ↑ Buy | 100,272 | $11.58 | $1.2M | See Note | Nov 20, 2024 (1d) |
| Nov 15, 2024 | NMFC | ↑ Buy | 97,008 | $11.55 | $1.1M | See Note | Nov 18, 2024 (3d) |
| Nov 13, 2024 | NMFC | ↑ Buy | 152,353 | $11.53 | $1.8M | See Note | Nov 14, 2024 (1d) |
| Nov 11, 2024 | NMFC | ↑ Buy | 191,636 | $11.30 | $2.2M | See Note | Nov 12, 2024 (1d) |
| Nov 7, 2024 | NMFC | ↑ Buy | 210,469 | $10.94 | $2.3M | See Note | Nov 8, 2024 (1d) |
| Nov 5, 2024 | NMFC | ↑ Buy | 173,657 | $10.70 | $1.9M | See Note | Nov 6, 2024 (1d) |
| Aug 28, 2024 | NONE | ↑ Buy | 479,875 | $10.00 | $4.8M | Direct | Aug 30, 2024 (2d) |
| Jun 13, 2024 | NONE | ↑ Buy | 1,000,000 | $10.00 | $10.0M | Direct | Jun 17, 2024 (4d) |
| Mar 14, 2024 | NONE | ↑ Buy | 1,000,000 | $10.00 | $10.0M | Direct | Mar 18, 2024 (4d) |
| Oct 25, 2023 | NONE | ↑ Buy | 650,000 | $10.00 | $6.5M | Direct | Oct 27, 2023 (2d) |
| Oct 17, 2023 | NONE | ↑ Buy | 750,000 | $10.00 | $7.5M | Direct | Oct 19, 2023 (2d) |
| Jul 24, 2023 | NONE | ↑ Buy | 500,000 | $10.00 | $5.0M | Direct | Jul 26, 2023 (2d) |
| Mar 17, 2023 | NMFC | ↑ Buy | 100,000 | $11.74 | $1.2M | Direct | Mar 21, 2023 (4d) |
| Mar 16, 2023 | NMFC] | ↑ Buy | 200,000 | $11.77 | $2.4M | Direct | Mar 17, 2023 (1d) |
| Mar 14, 2023 | NMFC | ↑ Buy | 200,000 | $11.83 | $2.4M | Direct | Mar 15, 2023 (1d) |
| Dec 8, 2022 | NONE | ↑ Buy | 1,000,000 | $10.00 | $10.0M | Direct | Dec 12, 2022 (4d) |
| Sep 1, 2022 | NMFC | ↑ Buy | 16 | $12.90 | $206 | See Note | Sep 6, 2022 (5d) |
| Aug 22, 2022 | NONE | ↑ Buy | 1,000,000 | $10.00 | $10.0M | Direct | Aug 24, 2022 (2d) |
| May 18, 2022 | NMFC | ↑ Buy | 47,330 | $12.96 | $613K | See Note | May 19, 2022 (1d) |
| May 18, 2022 | NMFC | ↑ Buy | 47,330 | $12.96 | $613K | Direct | May 19, 2022 (1d) |
| May 16, 2022 | NMFC | ↑ Buy | 32,600 | $12.77 | $416K | Direct | May 17, 2022 (1d) |
| May 16, 2022 | NMFC | ↑ Buy | 32,600 | $12.77 | $416K | See Note | May 17, 2022 (1d) |
| Mar 10, 2022 | NONE | ↑ Buy | 23,296,588 | $10.00 | $233.0M | Direct | Oct 3, 2022 (207d) |
| Mar 18, 2021 | BLPH | ↓ Sell | 400,000 | $5.48 | $2.2M | Direct | Mar 22, 2021 (4d) |
| Nov 10, 2020 | AVTR | ↓ Sell | 36,016,093 | $24.81 | $893.5M | Indirect | Nov 10, 2020 (0d) |
| Aug 21, 2020 | AVTR | ↓ Sell | 25,575,472 | $19.51 | $498.9M | Indirect | Aug 25, 2020 (4d) |
| May 27, 2020 | NMFC | ↑ Buy | 27,139 | $9.38 | $255K | See Note | Jun 1, 2020 (5d) |
| May 26, 2020 | AVTR | ↓ Sell | 20,886,424 | $15.90 | $332.2M | Indirect | May 28, 2020 (2d) |
| May 26, 2020 | NMFC | ↑ Buy | 200,000 | $9.12 | $1.8M | Direct | May 27, 2020 (1d) |
| May 26, 2020 | NMFC | ↑ Buy | 72,861 | $9.23 | $673K | Indirect | May 27, 2020 (1d) |
| May 14, 2020 | NMFC | ↑ Buy | 200,000 | $7.94 | $1.6M | Direct | May 18, 2020 (4d) |
| May 14, 2020 | NMFC | ↑ Buy | 100,000 | $8.00 | $800K | See Note | May 18, 2020 (4d) |
| May 12, 2020 | NMFC | ↑ Buy | 50,000 | $8.11 | $405K | See Note | May 13, 2020 (1d) |
| May 11, 2020 | NMFC | ↑ Buy | 100,000 | $8.11 | $811K | Direct | May 13, 2020 (2d) |
| Oct 23, 2019 | NMFC | ↑ Buy | 355,000 | $13.25 | $4.7M | Direct | Oct 25, 2019 (2d) |
| May 21, 2019 | AVTR | ↓ Sell | 100 | $14.00 | $1K | Indirect | May 23, 2019 (2d) |
| Dec 17, 2018 | NMFC | ↑ Buy | 181,805 | $12.52 | $2.3M | Direct | Dec 19, 2018 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other NMFC insiders
Open-market trades in the last 12 months
About Steven B Klinsky's insider trades
Steven B Klinsky is a director at New Mountain Finance (NMFC). Since May 18, 2005, Steven has reported 75 open-market purchases worth $445.0M and 10 sales worth $1.92B on SEC Form 4. In the last 12 months: 4 buys ($12.0M).
Their filings also include other transactions (5 filings), grants and awards (4 filings), shares returned to the company (2 filings), option exercises (2 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every NMFC insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.