New Mountain Finance Corp
NMFC- Exchange
- Nasdaq
- SEC CIK
- 0001496099
No open-market purchases or sales by New Mountain Finance Corp insiders were filed in the last 90 days; 143 institutions reported holding it in 13F filings for Q2 2026, worth $200.9M in total; no superinvestor holds it.
Other share classesNMFCZ
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by New Mountain Finance Corp insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for New Mountain Finance Corp, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Kline John R | CEO, President and Director | 389,685 | Sep 11, 2026 | 1 |
| Malfettone John P | Director | 0 | Jun 16, 2026 | 1 |
| Weinstein Adam | EVP, CAO and Director | 751,756 | Mar 18, 2026 | 2 |
| Klinsky Steven B | Director, 10% Owner | 5,370,858Indirect | Mar 12, 2026 | 4 |
| Ogens David | Director | 241,556 | Mar 4, 2026 | 1 |
| Boswerger Laura Holson | COO | 81,030 | Mar 2, 2026 | 1 |
| Corbett Kris | CFO and Treasurer | 9,750Indirect | Aug 11, 2025 | 0 |
| Kline John | CEO, President, and Director | 351,783 | Nov 8, 2024 | 0 |
| Hamwee Robert | Director | 549,373 | Aug 4, 2023 | 0 |
| Stone James | Section 16 Officer | 129,670 | Mar 15, 2023 | 0 |
| Arnold Rome G. III | Director | 62,291 | Mar 15, 2023 | 0 |
| Hartswell Joseph | CCO and Corporate Secretary | 10,143 | May 20, 2022 | 0 |
| Kajee Shiraz | Chief Financial Officer | 10,000 | May 18, 2022 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Mar 10, 2025 (view filing) | Mar 6-7 | 4 days | Ogens DavidDirector | PPurchase | +10.0K | $11.31 | +$113.1K | +5.4%194.0K after | 2 lots |
| Aug 11, 2025 (view filing) | Aug 7 | 4 days | Corbett KrisCFO and Treasurer | PPurchase | +750 | $10.14 | +$7.61K | +8.3%9.75K after | |
| Aug 12, 2025 (view filing) | Aug 11 | 1 day | Ogens DavidDirector | PPurchase | +18.0K | $10.23 | +$184.1K | +9.1%216.2K after | |
| Aug 12, 2025 (view filing) | Aug 11 | 1 day | Ogens DavidDirector | PPurchase | +8.00K | $10.24 | +$81.9K | +100.0%16.0K after | 2 lots |
| Sep 16, 2025 (view filing) | Sep 15 | 1 day | Weinstein AdamEVP, CAO and Director | PPurchase | +49.8K | $10.03 | +$499.0K | +8.3%652.5K after | |
| Sep 18, 2025 (view filing) | Sep 16 | 2 days | Klinsky Steven BDirector | PPurchase | +106.7K | $9.78 | +$1.04M | +2.5%4.37M after | 2 lots |
| Mar 2, 2026 (view filing) | Feb 27 | 3 days | Boswerger Laura HolsonCOO | PPurchase | +12.5K | $7.74 | +$96.8K | +18.2%81.0K after | |
| Mar 3, 2026 (view filing) | Feb 27-Mar 2 | 4 days | Weinstein AdamEVP, CAO and Director | PPurchase | +41.7K | $7.76 | +$323.5K | +6.0%738.9K after | 2 lots |
| Mar 3, 2026 (view filing) | Feb 27-Mar 2 | 4 days | Klinsky Steven BDirector | PPurchase | +324.7K | $7.75 | +$2.52M | +7.6%4.59M after | 4 lots |
| Mar 4, 2026 (view filing) | Mar 3 | 1 day | Ogens DavidDirector | PPurchase | +12.5K | $7.87 | +$98.4K | +5.5%241.6K after | 2 lots |
| Mar 5, 2026 (view filing) | Mar 3-4 | 2 days | Klinsky Steven BDirector, 10% Owner | PPurchase | +437.4K | $8.04 | +$3.52M | +9.8%4.88M after | 4 lots |
| Mar 6, 2026 (view filing) | Mar 5 | 1 day | Klinsky Steven BDirector, 10% Owner | PPurchase | +237.9K | $8.10 | +$1.93M | +5.0%5.04M after | 2 lots |
| Mar 12, 2026 (view filing) | Mar 10-11 | 2 days | Klinsky Steven BDirector, 10% Owner | PPurchase | +500.0K | $8.05 | +$4.03M | +10.3%5.37M after | 4 lots |
| Mar 18, 2026 (view filing) | Mar 17 | 1 day | Weinstein AdamEVP, CAO and Director | PPurchase | +12.9K | $7.61 | +$98.2K | +1.7%751.8K after | |
| Jun 16, 2026 (view filing) | Jun 15 | 1 day | Malfettone John PDirector | SSale | −77.5K | $7.89 | −$611.5K | −100.0%0 after |