Form 4 for NMFC New Mountain Finance Corp

Accepted 2026-03-05 00:00:00 ET · period of report 2026-03-03 · accession 0001580642-26-001523 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
MI	2026-03-05	2026-03-03+	NMFC	KLINSKY STEVEN B	Dir, 10%	P - Purchase	$8.04	+437.4K	4.88M	+10%	+$3.52M

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2026-03-03	P	A	166,997	$7.94	4,754,338	I See Note	—	—	(F8) The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.
2	Common	Common Stock	2026-03-04	P	A	62,301	$8.17	1,219,153	I See Note	—	—	(F2) The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
3	Common	Common Stock	2026-03-03	P	A	83,498	$7.94	1,156,852	I See Note	—	—	(F2) The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
4	Common	Common Stock	2026-03-04	P	A	124,604	$8.17	4,878,942	I See Note	—	—	(F8) The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.