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NMFC

New Mountain Finance (NMFC) stock: insider trades, news & valuation

Strong buying
Close · Oct 9, 2026 $6.73 -1.2% on the day -13.7% over 12 months 52-week range $6.58 – $8.48

Share price and insider trades

NMFC closeInsider buyInsider sale
6789NovDecJan 2026FebMarAprMayJunJulAugSepOctBought $98,169 on 2026-03-17 · Adam B. WeinsteinSold $611,475 on 2026-06-15 · John P MalfettoneBought $1,455,969 on 2026-02-27 · Adam B. Weinstein, Laura C. Holson Boswerger, Steven B KlinskyBought $1,480,151 on 2026-03-02 · Adam B. Weinstein, Steven B KlinskyBought $1,527,014 on 2026-03-04 · Steven B KlinskyBought $1,801,252 on 2026-03-10 · Steven B KlinskyBought $1,926,771 on 2026-03-05 · Steven B KlinskyBought $2,087,281 on 2026-03-03 · David Ogens, Steven B KlinskyBought $2,223,748 on 2026-03-11 · Steven B Klinsky
Bought, 12 months$12.6M
Sold, 12 months$611K
Insiders buying4
Insiders selling1

New Mountain Finance insider trading at a glance (Oct 9, 2026): in the past 12 months, 4 insiders bought $12.6M and 1 sold $611K of NMFC stock on the open market, including a cluster buy that began Feb 27, 2026.

NMFC insider buying and selling by quarter

Open-market purchases (green, above the line) and sales (red, below), by trade date.

Q1 2026: $12.6M bought (20 trades)$12.6MQ1 2026Q2 2026: $611K sold (1 trades)Q2 2026Q3 2026Q4 2026
QuarterBoughtPurchasesSoldSales
Q4 2026—0—0
Q3 2026—0—0
Q2 2026—0$611K1
Q1 2026$12.6M20—0

Valuation, profit and volume

P/E (trailing)n/aSector median —
Market value— 
Profit margin—Revenue growth —
Volume vs. 50-day1.1×Last 5 sessions
Insiders' paper profit−$2.0MOn all tracked purchases -15.6%

Summary

Over the past 12 months, 4 New Mountain Finance Corp insiders reported open-market purchases totaling $12.6M, while 1 insider reported sales totaling $611K. The most recent cluster buy began on Feb 27, 2026, when 4 insiders bought a combined $12.5M. Among insiders with enough purchase history to measure, Steven B Klinsky (Director) has the highest Insider Score at 33. 0 of 1 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.

Insider transactions

Open-market purchases and sales.

Filed Insider Type Shares Price Value Since Score
Jun 16SEC John P MalfettoneDirector Sell 77,500 $7.89 $611K -14.7% —
Mar 18SEC Adam B. WeinsteinEvp, Cao And Director Buy 12,900751,756 held (+2%) $7.61 $98K -11.6% 33
Mar 12SEC Steven B KlinskyDirector Buy 184,1625,370,858 held (+4%) $8.05 $1.5M -16.4% 33
Mar 12SEC Steven B KlinskyDirector Buy 149,1725,186,696 held (+3%) $8.05 $1.2M -16.4% 33
Mar 12SEC Steven B KlinskyDirector Buy 92,0801,465,110 held (+7%) $8.05 $741K -16.4% 33
Mar 12SEC Steven B KlinskyDirector Buy 74,5861,373,030 held (+6%) $8.05 $600K -16.4% 33
Mar 6SEC Steven B KlinskyDirector Buy 158,5825,037,524 held (+3%) $8.10 $1.3M -16.9% 33
Mar 6SEC Steven B KlinskyDirector Buy 79,2911,298,444 held (+7%) $8.10 $642K -16.9% 33
Mar 5SEC Steven B KlinskyDirector Buy 166,9974,754,338 held (+4%) $7.94 $1.3M -15.2% 33
Mar 5SEC Steven B KlinskyDirector Buy 124,6044,878,942 held (+3%) $8.17 $1.0M -17.6% 33
Mar 5SEC Steven B KlinskyDirector Buy 83,4981,156,852 held (+8%) $7.94 $663K -15.2% 33
Mar 5SEC Steven B KlinskyDirector Buy 62,3011,219,153 held (+5%) $8.17 $509K -17.6% 33
Mar 4SEC David OgensDirector Buy 10,100239,156 held (+4%) $7.87 $79K -14.5% —
Mar 4SEC David OgensDirector Buy 2,400241,556 held (+1%) $7.86 $19K -14.4% —
Mar 3SEC Steven B KlinskyDirector Buy 124,4834,587,341 held (+3%) $7.79 $970K -13.6% 33
Mar 3SEC Steven B KlinskyDirector Buy 92,0014,462,858 held (+2%) $7.69 $707K -12.5% 33
Mar 3SEC Steven B KlinskyDirector Buy 62,2421,073,354 held (+6%) $7.79 $485K -13.6% 33
Mar 3SEC Steven B KlinskyDirector Buy 46,0011,011,112 held (+5%) $7.69 $354K -12.5% 33
Mar 3SEC Adam B. WeinsteinEvp, Cao And Director Buy 38,400735,549 held (+6%) $7.76 $298K -13.3% 33
Mar 3SEC Adam B. WeinsteinEvp, Cao And Director Buy 3,307738,856 held (+0%) $7.73 $26K -12.9% 33
Mar 2SEC Laura C. Holson BoswergerCOO Buy 12,50081,030 held (+18%) $7.74 $97K -13.0% —

Insiders at New Mountain Finance Corp

InsiderBoughtSoldLast filingScore
Steven B KlinskyDirector $12.0M — Mar 12, 2026 33
Adam B. WeinsteinEvp, Cao And Director $422K — Mar 18, 2026 33
John P MalfettoneDirector — $611K Jun 16, 2026 —
David OgensDirector $98K — Mar 4, 2026 —
Laura C. Holson BoswergerCOO $97K — Mar 2, 2026 —

NMFC stock: common questions

Are New Mountain Finance Corp insiders buying NMFC stock?

In the past 12 months, 4 insiders reported open-market purchases of NMFC worth $12.6M. The latest was Evp, Cao And Director Adam B. Weinstein bought $98K of NMFC at $7.61.

Are New Mountain Finance Corp insiders selling NMFC stock?

1 insiders reported sales worth $611K over the same period.

Where does this data come from?

Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.

What is NMFC's 52-week range?

Over the past year NMFC has traded between $6.58 and $8.48. It last closed at $6.73 on Oct 9, 2026.