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buyNotable cluster of 4

Steven B Klinsky bought $3.5M of NMFC

director, owner at New Mountain Finance Corp. 437,400 shares at an average of $8.04, traded Mar 3, 2026, filed Mar 5, 2026.

Conviction score
75
Value
$3.5M
437,400 shares
Holdings after
4,878,942
+41% from before
From 52-week low
+4%
low $6.85, close $7.16
From 52-week high
-22%
high $9.17, as of Mar 3, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $3.5M at market
    +25
  • Relative to holdings
    Holdings up 41%
    +6
  • Price context
    4% above the 52-week low; 22% below the 52-week high
    +14
  • Cluster
    4 insiders buying within 14 days
    +15
  • Repeat buying
    2 buys in 90 days
    +5
  • Track record
    Median 6-month excess return -2% over 13 past buys
    -5

What happened after comparable buys

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m +2.2%, 3m +3.1%, 6m -0.6%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

NMFCOct 12, 2026 · close 6.74
Since filing Mar 5, 2026: -7.1%SPY +15.1% · excess -22.2%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001580642-26-001523, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 3, 2026POpen-market purchase
Common Stockindirect: See Note
+83,498$7.94$663k1,156,852Mar 5, 2026
Mar 4, 2026POpen-market purchase
Common Stockindirect: See Note
+62,301$8.17$509k1,219,153Mar 5, 2026
Mar 3, 2026POpen-market purchase
Common Stockindirect: See Note
+166,997$7.94$1.3M4,754,338Mar 5, 2026
Mar 4, 2026POpen-market purchase
Common Stockindirect: See Note
+124,604$8.17$1.0M4,878,942Mar 5, 2026

Related signals

Other insiders at New Mountain Finance Corp and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
55Moderate
NMFCsell
New Mountain Finance Corp
John P Malfettone
director
$612k
77,500 shares
-100%
59Moderate
NMFCbuy 3
New Mountain Finance Corp
Adam B. Weinstein
EVP, CAO and Director
$98k
12,900 shares
+2%
75Notable
NMFCbuy 4
New Mountain Finance Corp
Steven B Klinsky
director, owner
$4.0M
500,000 shares
+39%
72Notable
NMFCbuy 4
New Mountain Finance Corp
Steven B Klinsky
director, owner
$1.9M
237,873 shares
+20%
57Moderate
NMFCbuy 4
New Mountain Finance Corp
David Ogens
director
$98k
12,500 shares
+5%
70Notable
NMFCbuy 4
New Mountain Finance Corp
Steven B Klinsky
director
$2.5M
324,727 shares
+34%
61Notable
NMFCbuy 4
New Mountain Finance Corp
Adam B. Weinstein
EVP, CAO and Director
$324k
41,707 shares
+6%
62Notable
NMFCbuy 4
New Mountain Finance Corp
Laura C. Holson Boswerger
COO
$97k
12,500 shares
+18%
46Moderate
NMFCbuy 2
New Mountain Finance Corp
Steven B Klinsky
director
$1.0M
106,691 shares
+11%
44Moderate
NMFCbuy 2
New Mountain Finance Corp
Adam B. Weinstein
EVP, CAO and Director
$499k
49,750 shares
+8%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Steven B Klinsky bought $3.5M of NMFC | InsiderTell