New Mountain Finance NMFC Insider Ownership

NASDAQ NMFC

$6.72 +0.21 (+3.23%)

At close: Oct 22, 2026 · 4:00 PM EDT

Insider Holdings by Owner

7.57Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

14.58%

■0% pp QoQ

Shares Held by Insiders

13.78Mn

filed for Sep 2026

■0.00% QoQ

Shares Outstanding

94.55Mn

94,551,023 shares

Direct Holdings

1.54Mn

Indirect: 12.24Mn

Net Shares Traded (QoQ)

no net change in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 10, 2026

Over the past year, NMFC insiders bought $12.6 million of stock (1.58Mn shares) and sold $611,684 (77.5K shares) on the open market.

Behind New Mountain Finance's open-market trades in the past 12 months were 4 insiders buying and one insider selling.
Among New Mountain Finance insiders, Steven B. Klinsky (Director and 10% owner) led open-market buying over the past 12 months with $11.98 million of purchases (1.5Mn shares); the latest was on March 11, 2026.
Meanwhile, the largest open-market sales of NMFC in the past 12 months were by John P. Malfettone (Director), totaling $611,684 (77.5K shares), most recently on June 15, 2026.
According to Business Quant data, insiders at New Mountain Finance reported 13.78Mn shares in total in their latest Form 4 filings, unchanged from 13.78Mn shares at the end of Q2 2026 and up 13.73% from 12.12Mn shares at the end of Q3 2025.
Of the 13.78Mn shares held by New Mountain Finance insiders, 1.54Mn shares (11.20%) are held directly and 12.24Mn shares (88.80%) indirectly, through trusts, partnerships, family members and other entities.
The insider holdings in New Mountain Finance belong to 6 insiders who have reported on Form 4 within the past two years.
NMFC's three largest insider shareholders, per their latest Form 4 filings, are Steven B. Klinsky (Director and 10% owner, 12.33Mn shares), Adam B. Weinstein (EVP, CAO and Director, 751.76K shares) and John Kline (CEO, President, and Director, 351.78K shares).
Steven B. Klinsky holds 89.47% of the combined insider position in New Mountain Finance.
Institutions owned 29.49% of NMFC shares as of Q2 2026; insiders' latest Form 4 filings account for about 14.58%, leaving roughly 55.93% with other investors, including the public.
A total of 9 Form 4 filings with transactions in New Mountain Finance stock were made over the past 12 months, by 5 insiders.
The insider holdings and trades above for New Mountain Finance reflect Form 4 filings through June 16, 2026.

Form 4 Holdings

Insiders Holding NMFC

Insiders 11

Shares held 7.57Mn

Of outstanding 8.00%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Steven B Klinsky	Director, TenPercentOwner	0	5,370,858	5,370,858	71.0%	12 Mar, 2026
2	Adam B. Weinstein	Evp, Cao And Director	751,756	0	751,756	9.9%	18 Mar, 2026
3	Robert Hamwee	Ceo And Director	549,373	0	549,373	7.3%	04 Aug, 2023
4	John Kline	Ceo, President, And Director	351,783	0	351,783	4.6%	08 Nov, 2024
5	David Ogens	Director	241,556	0	241,556	3.2%	04 Mar, 2026
6	James Stone	Section 16 Officer	129,670	0	129,670	1.7%	15 Mar, 2023
7	Laura C. Holson Boswerger	Coo	81,030	0	81,030	1.1%	02 Mar, 2026
8	Rome G. Iii Arnold	Director	62,291	0	62,291	0.8%	15 Mar, 2023
9	Joseph Hartswell	Cco And Corporate Secretary	10,143	0	10,143	0.1%	20 May, 2022
10	Shiraz Kajee	Chief Financial Officer	10,000	0	10,000	0.1%	18 May, 2022
11	Kris Corbett	Cfo And Treasurer	0	9,750	9,750	0.1%	11 Aug, 2025

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

498 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
15 Jun, 2026	John P Malfettone	Director	Disposed S	77,500	$7.89	$611.68K	0	Direct
17 Mar, 2026	Adam B. Weinstein	Evp, Cao And Director	Acquired P	12,900	$7.61	$98.16K	751,756	Direct
10 Mar, 2026	Steven B Klinsky	Director, TenPercentOwner	Acquired P	74,586	$8.05	$600.42K	1,373,030	Indirect
11 Mar, 2026	Steven B Klinsky	Director, TenPercentOwner	Acquired P	92,080	$8.05	$741.24K	1,465,110	Indirect
10 Mar, 2026	Steven B Klinsky	Director, TenPercentOwner	Acquired P	149,172	$8.05	$1.20Mn	5,186,696	Indirect
11 Mar, 2026	Steven B Klinsky	Director, TenPercentOwner	Acquired P	184,162	$8.05	$1.48Mn	5,370,858	Indirect
05 Mar, 2026	Steven B Klinsky	Director, TenPercentOwner	Acquired P	79,291	$8.10	$642.26K	1,298,444	Indirect
05 Mar, 2026	Steven B Klinsky	Director, TenPercentOwner	Acquired P	158,582	$8.10	$1.28Mn	5,037,524	Indirect
03 Mar, 2026	Steven B Klinsky	Director, TenPercentOwner	Acquired P	83,498	$7.94	$663.19K	1,156,852	Indirect
04 Mar, 2026	Steven B Klinsky	Director, TenPercentOwner	Acquired P	62,301	$8.17	$508.82K	1,219,153	Indirect
03 Mar, 2026	Steven B Klinsky	Director, TenPercentOwner	Acquired P	166,997	$7.94	$1.33Mn	4,754,338	Indirect
04 Mar, 2026	Steven B Klinsky	Director, TenPercentOwner	Acquired P	124,604	$8.17	$1.02Mn	4,878,942	Indirect
03 Mar, 2026	David Ogens	Director	Acquired P	10,100	$7.87	$79.49K	239,156	Direct
03 Mar, 2026	David Ogens	Director	Acquired P	2,400	$7.86	$18.86K	241,556	Direct
27 Feb, 2026	Adam B. Weinstein	Evp, Cao And Director	Acquired P	38,400	$7.76	$298.14K	735,549	Direct
02 Mar, 2026	Adam B. Weinstein	Evp, Cao And Director	Acquired P	3,307	$7.73	$25.56K	738,856	Direct
27 Feb, 2026	Steven B Klinsky	Director	Acquired P	46,001	$7.69	$353.86K	1,011,112	Indirect
02 Mar, 2026	Steven B Klinsky	Director	Acquired P	62,242	$7.79	$484.57K	1,073,354	Indirect
27 Feb, 2026	Steven B Klinsky	Director	Acquired P	92,001	$7.69	$707.71K	4,462,858	Indirect
02 Mar, 2026	Steven B Klinsky	Director	Acquired P	124,483	$7.79	$969.13K	4,587,341	Indirect

Showing 1 to 20 of 498 transactions