NMFC insider buying – New Mountain Finance Corp
125 insider purchases since 2016 worth $78.4M by 17 different insiders. Last 12 months: 8 purchases, $12.6M. Most recent filing: 2026-03-18.
Where insiders bought and sold NMFC – last 5 yearsCEO / officers Directors Funds & 10% owners Sales
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits. 69 older purchases (before the 5-year window) are listed in the table below.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| KLINSKY STEVEN B Director | $66.4M 37× · 6,215,737 sh | 2016-02-11 2026-03-10 | – | 2,344,854 shares as of 2026-03-12 | Holds - never sold |
| Weinstein Adam B. Officer | $4.9M 19× · 452,178 sh | 2016-02-09 2026-03-17 | – | 751,756 shares as of 2026-03-18 | Holds - never sold |
| HAMWEE ROBERT CEO | $2.0M 8× · 165,000 sh | 2016-10-31 2022-06-15 | – | 561,373 shares as of 2023-08-04 | Holds - never sold |
| Kline John CEO | $1.9M 12× · 154,540 sh | 2016-11-02 2024-11-06 | – | 314,643 shares as of 2024-11-08 | Holds - never sold |
| Ogens David Director | $1.1M 15× · 105,631 sh | 2016-10-31 2026-03-03 | – | 257,556 shares as of 2026-03-04 | Holds - never sold |
| Arnold Rome G. III Director | $549,063 5× · 43,300 sh | 2019-12-02 2023-03-14 | – | 62,291 shares as of 2023-03-15 | Holds - never sold |
| Stone James Officer | $544,260 9× · 41,570 sh | 2016-02-09 2023-03-14 | – | 164,003 shares as of 2023-03-15 | Holds - never sold |
| Boswerger Laura C. Holson Officer | $422,871 5× · 39,475 sh | 2022-05-23 2026-02-27 | – | 81,030 shares as of 2026-03-02 | Holds - never sold |
| Wolfgruber Kurt Director | $198,770 3× · 15,000 sh | 2017-12-15 2018-12-17 | – | 109,983 shares as of 2018-12-19 | Holds - never sold |
| Kajee Shiraz CFO | $136,000 5× · 10,000 sh | 2017-06-13 2022-05-16 | – | 10,000 shares as of 2022-05-18 | Holds - never sold |
| Corbett Kris CFO | $103,305 2× · 9,000 sh | 2024-08-05 2024-11-04 | – | 9,750 shares as of 2025-08-11 | Holds - never sold |
| Hurley Alfred F Jr Director | $65,195 1× · 5,000 sh | 2018-03-15 2018-03-15 | – | 34,026 shares as of 2018-03-16 | Holds - never sold |
| Hartswell Joseph Officer | $56,925 1× · 4,500 sh | 2022-05-20 2022-05-20 | – | 10,143 shares as of 2022-05-20 | Holds - never sold |
| Handy Alice Director | $25,650 2× · 2,000 sh | 2020-03-02 2021-03-08 | – | 2,000 shares as of 2021-03-09 | Holds - never sold |
| Jerry Karrie J. Officer | $12,900 1× · 1,000 sh | 2018-12-13 2018-12-13 | – | 6,394 shares as of 2020-03-13 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 8 | $12.6M | 4 | 1 | $611,475 |
| 2025 | 5 | $2.0M | 3 | – | – |
| 2024 | 19 | $15.8M | 5 | – | – |
| 2023 | 7 | $4.1M | 6 | – | – |
| 2022 | 14 | $3.6M | 8 | – | – |
| 2021 | 4 | $443,535 | 4 | – | – |
| 2020 | 16 | $8.7M | 8 | – | – |
| 2019 | 10 | $5.7M | 8 | – | – |
| 2018 | 20 | $11.1M | 10 | – | – |
| 2017 | 7 | $440,127 | 5 | 2 | $1.1M |
| 2016 | 15 | $14.0M | 6 | 1 | $1.2M |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2026-03-18 | Weinstein Adam B. | Officer | 12,900 | $7.61 | $98,169 | +1.7% | SEC |
| 2026-03-12 | KLINSKY STEVEN B | Director | 500,000 | $8.05 | $4.0M | +10.3% | SEC |
| 2026-03-06 | KLINSKY STEVEN B | Director | 237,873 | $8.10 | $1.9M | +5.0% | SEC |
| 2026-03-05 | KLINSKY STEVEN B | Director | 437,400 | $8.04 | $3.5M | +9.8% | SEC |
| 2026-03-04 | Ogens David | Director | 12,500 | $7.87 | $98,351 | +5.5% | SEC |
| 2026-03-03 | Weinstein Adam B. | Officer | 41,707 | $7.76 | $323,547 | +6.0% | SEC |
| 2026-03-03 | KLINSKY STEVEN B | Director | 324,727 | $7.75 | $2.5M | +7.6% | SEC |
| 2026-03-02 | Boswerger Laura C. Holson | Officer | 12,500 | $7.74 | $96,750 | +18.2% | SEC |
| 2025-09-18 | KLINSKY STEVEN B | Director | 106,691 | $9.78 | $1.0M | +2.5% | SEC |
| 2025-09-16 | Weinstein Adam B. | Officer | 49,750 | $10.03 | $498,992 | +8.3% | SEC |
| 2025-08-12 | Ogens David | Director | 26,000 | $10.23 | $266,060 | +13.7% | SEC |
| 2025-03-10 | Ogens David | Director | 10,000 | $11.31 | $113,100 | +5.4% | SEC |
| 2025-03-06 | Ogens David | Director | 10,000 | $11.38 | $113,750 | +5.7% | SEC |
| 2024-12-19 | KLINSKY STEVEN B | Director | 72,280 | $11.28 | $815,318 | +1.7% | SEC |
| 2024-12-17 | KLINSKY STEVEN B | Director | 100,502 | $11.74 | $1.2M | +2.4% | SEC |
| 2024-12-13 | KLINSKY STEVEN B | Director | 31,597 | $11.74 | $370,947 | +0.8% | SEC |
| 2024-12-09 | KLINSKY STEVEN B | Director | 34,018 | $11.74 | $399,371 | +0.8% | SEC |
| 2024-12-05 | KLINSKY STEVEN B | Director | 6,200 | $11.75 | $72,850 | +0.2% | SEC |
| 2024-11-29 | KLINSKY STEVEN B | Director | 2,400 | $11.74 | $28,176 | +0.1% | SEC |
| 2024-11-26 | KLINSKY STEVEN B | Director | 36,721 | $11.71 | $430,003 | +0.9% | SEC |
| 2024-11-22 | KLINSKY STEVEN B | Director | 89,044 | $11.56 | $1.0M | +2.2% | SEC |
| 2024-11-20 | KLINSKY STEVEN B | Director | 100,272 | $11.58 | $1.2M | +2.5% | SEC |
| 2024-11-18 | KLINSKY STEVEN B | Director | 97,008 | $11.56 | $1.1M | +2.5% | SEC |
| 2024-11-14 | KLINSKY STEVEN B | Director | 152,353 | $11.53 | $1.8M | +4.1% | SEC |
| 2024-11-12 | KLINSKY STEVEN B | Director | 191,636 | $11.30 | $2.2M | +5.4% | SEC |
| 2024-11-08 | Kline John | CEO | 41,550 | $10.92 | $453,706 | +13.4% | SEC |
| 2024-11-08 | KLINSKY STEVEN B | Director | 210,469 | $10.93 | $2.3M | +6.1% | SEC |
| 2024-11-06 | Weinstein Adam B. | Officer | 45,000 | $10.87 | $489,150 | +8.9% | SEC |
| 2024-11-06 | KLINSKY STEVEN B | Director | 173,657 | $10.70 | $1.9M | +5.2% | SEC |
| 2024-11-06 | Corbett Kris | CFO | 2,500 | $10.85 | $27,125 | +38.5% | SEC |
| 2024-08-07 | Corbett Kris | CFO | 6,500 | $11.72 | $76,180 | SEC | |
| 2024-06-11 | Ogens David | Director | 3,500 | $12.62 | $44,170 | +2.1% | SEC |
| 2023-05-15 | Boswerger Laura Holson | CFO | 14,975 | $11.89 | $178,003 | +43.5% | SEC |
| 2023-03-21 | KLINSKY STEVEN B | Director | 100,000 | $11.74 | $1.2M | +1.3% | SEC |
| 2023-03-15 | Stone James | Officer | 11,000 | $11.96 | $131,523 | +9.3% | SEC |
| 2023-03-15 | Arnold Rome G. III | Director | 10,000 | $12.02 | $120,200 | +19.1% | SEC |
| 2023-03-15 | KLINSKY STEVEN B | Director | 200,000 | $11.83 | $2.4M | +2.7% | SEC |
| 2023-03-14 | Ogens David | Director | 5,400 | $11.65 | $62,910 | +4.2% | SEC |
| 2023-03-14 | Kline John | CEO | 8,200 | $12.05 | $98,810 | +3.7% | SEC |
| 2022-12-20 | Arnold Rome G. III | Director | 10,000 | $12.05 | $120,500 | +24.3% | SEC |
Showing the latest 40 of 125 purchases.
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2026-06-16 | Malfettone John P | Director | 77,500 | $7.89 | $611,475 | Sale | SEC |
| 2017-03-16 | Malpass David | Director | 66,411 | $14.72 | $977,320 | Sale | SEC |
| 2017-03-07 | Malpass David | Director | 11,500 | $14.80 | $170,230 | Sale | SEC |
| 2016-08-17 | Malpass David | Director | 85,000 | $14.00 | $1.2M | Sale | SEC |
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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