NMFC New Mountain Finance Corporation

NASDAQ
$6.99

New Mountain Finance Corporation (NMFC) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal Bullish Insiders bought more than they sold over this window — uncommon at any size.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 0 sellers in the last 90 days
Insiders buying
4
22 transactions
Insiders selling
1
1 transaction
Purchases
$13.6M
1,686,298 shares
Sales
$611.7K
77,500 shares
Net activity
$13.0M
purchases less sales

How much of that selling was preplanned? 0% planned / 100% discretionary

10b5-1 plan sales $0 0 transactions · 0 shares
Discretionary sales $611.7K 1 transaction · 77,500 shares

Largest single sale: $611.7K.

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: March 17, 2026 , by Weinstein Adam B. .

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
Malfettone John P Director Sell 77,500 $7.89 $611.7K None left
Weinstein Adam B. EVP, CAO and Director Buy 12,900 $7.61 $98.2K 751,756
KLINSKY STEVEN B 2 fills Director Buy 276,242 $8.05 $2.2M 5,370,858
KLINSKY STEVEN B 2 fills Director Buy 223,758 $8.05 $1.8M 5,186,696
KLINSKY STEVEN B 2 fills Director Buy 237,873 $8.10 $1.9M 5,037,524
KLINSKY STEVEN B 2 fills Director Buy 186,905 $8.17 $1.5M 4,878,942
KLINSKY STEVEN B 2 fills Director Buy 250,495 $7.94 $2.0M 4,754,338
Ogens David 2 fills Director Buy 12,500 $7.87 $98.4K 241,556
KLINSKY STEVEN B 2 fills Director Buy 186,725 $7.79 $1.5M 4,587,341
Weinstein Adam B. EVP, CAO and Director Buy 3,307 $7.73 $25.6K 738,856
KLINSKY STEVEN B 2 fills Director Buy 138,002 $7.69 $1.1M 4,462,858
Weinstein Adam B. EVP, CAO and Director Buy 38,400 $7.76 $298.1K 735,549
Boswerger Laura C. Holson COO Buy 12,500 $7.74 $96.8K 81,030

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.