Are insiders buying NMFC stock?

Yes — 9 distinct insiders have bought NMFC (New Mountain Finance Corp) on the open market, including 4 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Mar 18, 2026.

How much NMFC stock have insiders bought?

Insiders have bought a combined $29.9M of NMFC across 75 open-market purchases, based on SEC Form 4 filings.

What is an insider cluster buy in NMFC?

A cluster buy is two or more distinct New Mountain Finance Corp insiders — officers, directors, or 10% owners — each buying NMFC on the open market within a rolling window. NMFC has 4 detected cluster buys to date.

Where does this NMFC insider trading data come from?

Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

NMFC insider buying

4 cluster buys

New Mountain Finance Corp · Financials

When two or more insiders at New Mountain Finance Corp buy NMFC on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in NMFC plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.

Clusters

Distinct insiders

Total bought

$29.9M

Market cap

$679.1M

Detected clusters

Feb 27 – Mar 11, 2026
Detected Mar 11, 2026
High conviction2 insiders
Total bought
$12.3M
Market cap
$679.1M
Sep 15 – Sep 16, 2025
Detected Sep 16, 2025
High conviction2 insiders
Total bought
$1.5M
Market cap
$679.1M
Nov 4 – Dec 17, 2024
Detected Dec 17, 2024
High conviction3 insiders
Total bought
$15.1M
Market cap
$679.1M

1 more cluster in NMFC

All notable open-market buys in NMFC

Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.

Date	Insider	Shares	Price	Value	Filing
Mar 17, 2026	Weinstein Adam B. Director, EVP, CAO and Director	12,900	$7.61	$98.2K	SEC ↗
Mar 11, 2026	KLINSKY STEVEN Bcluster Director, 10% Owner	184,162	$8.05	$1.5M	SEC ↗
Mar 11, 2026	KLINSKY STEVEN Bcluster Director, 10% Owner	92,080	$8.05	$741.2K	SEC ↗
Mar 10, 2026	KLINSKY STEVEN Bcluster Director, 10% Owner	149,172	$8.05	$1.2M	SEC ↗
Mar 10, 2026	KLINSKY STEVEN Bcluster Director, 10% Owner	74,586	$8.05	$600.4K	SEC ↗
Mar 5, 2026	KLINSKY STEVEN Bcluster Director, 10% Owner	158,582	$8.10	$1.3M	SEC ↗
Mar 5, 2026	KLINSKY STEVEN Bcluster Director, 10% Owner	79,291	$8.10	$642.3K	SEC ↗
Mar 4, 2026	KLINSKY STEVEN Bcluster Director, 10% Owner	124,604	$8.17	$1.0M	SEC ↗
Mar 4, 2026	KLINSKY STEVEN Bcluster Director, 10% Owner	62,301	$8.17	$509.0K	SEC ↗
Mar 3, 2026	KLINSKY STEVEN Bcluster Director, 10% Owner	166,997	$7.94	$1.3M	SEC ↗
Mar 3, 2026	KLINSKY STEVEN Bcluster Director, 10% Owner	83,498	$7.94	$663.0K	SEC ↗
Mar 3, 2026	Ogens David Director	10,100	$7.87	$79.5K	SEC ↗
Mar 3, 2026	Ogens David Director	2,400	$7.86	$18.9K	SEC ↗
Mar 2, 2026	KLINSKY STEVEN Bcluster Director	124,483	$7.79	$969.7K	SEC ↗
Mar 2, 2026	KLINSKY STEVEN Bcluster Director	62,242	$7.79	$484.9K	SEC ↗
Feb 27, 2026	KLINSKY STEVEN Bcluster Director	92,001	$7.69	$707.5K	SEC ↗
Feb 27, 2026	KLINSKY STEVEN Bcluster Director	46,001	$7.69	$353.7K	SEC ↗
Feb 27, 2026	Weinstein Adam B.cluster Director, EVP, CAO and Director	38,400	$7.76	$298.0K	SEC ↗
Feb 27, 2026	Boswerger Laura C. Holson COO	12,500	$7.74	$96.8K	SEC ↗
Sep 16, 2025	KLINSKY STEVEN Bcluster Director	85,352	$9.78	$834.7K	SEC ↗
Sep 16, 2025	KLINSKY STEVEN Bcluster Director	21,339	$9.78	$208.7K	SEC ↗
Sep 15, 2025	Weinstein Adam B.cluster Director, EVP, CAO and Director	49,750	$10.03	$499.0K	SEC ↗
Aug 11, 2025	Ogens David Director	18,000	$10.23	$184.1K	SEC ↗
Aug 7, 2025	Corbett Kris CFO and Treasurer	750	$10.14	$7.6K	SEC ↗
Mar 7, 2025	Ogens David Director	5,000	$11.30	$56.5K	SEC ↗

50 earlier buys hidden — sign in free to see the full history.

More Financials stocks with insider cluster buys

All insider buying in Financials →

NMFC insider buying — FAQ

Are insiders buying NMFC stock?: Yes — 9 distinct insiders have bought NMFC (New Mountain Finance Corp) on the open market, including 4 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Mar 18, 2026.
How much NMFC stock have insiders bought?: Insiders have bought a combined $29.9M of NMFC across 75 open-market purchases, based on SEC Form 4 filings.
What is an insider cluster buy in NMFC?: A cluster buy is two or more distinct New Mountain Finance Corp insiders — officers, directors, or 10% owners — each buying NMFC on the open market within a rolling window. NMFC has 4 detected cluster buys to date.
Where does this NMFC insider trading data come from?: Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

How we track insider buying in NMFC

We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy NMFC within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?

This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding NMFC.