New Mountain Finance Corporation
US ˙ NasdaqGS ˙ US6475511001

SecurityNMFC / New Mountain Finance Corporation
InstitutionNorthern Trust Corp
Latest Disclosed Ownership30,569 shares
Latest Disclosed Value $ 237,216
Northern Trust Corp reports 43.30% decrease in ownership of NMFC / New Mountain Finance Corporation

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 30,569 shares of New Mountain Finance Corporation (US:NMFC) valued at $237,215 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 53,911 shares of New Mountain Finance Corporation. This represents a change in shares of -43.30% during the quarter. The current value of the position is $244,858 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F NEW MTN FIN COM 647551100 30,569 -23,342 -43.30 237 -52.22 0.0000
2026-02-17 2025-12-31 13F NEW MTN FIN COM 647551100 53,911 -4,512 -7.72 497 -11.90 0.0001
2025-11-14 2025-09-30 13F NEW MTN FIN COM 647551100 58,423 -5,173 -8.13 563 -15.97 0.0001
2025-08-13 2025-06-30 13F NEW MTN FIN COM 647551100 63,596 38,218 150.60 671 140.14 0.0001
2025-05-13 2025-03-31 13F NEW MTN FIN COM 647551100 25,378 -35,850 -58.55 280 -59.51 0.0000
2025-02-14 2024-12-31 13F NEW MTN FIN COM 647551100 61,228 13,314 27.79 689 20.03 0.0001
2024-11-13 2024-09-30 13F NEW MTN FIN COM 647551100 47,914 33,810 239.72 574 233.72 0.0001
2024-08-14 2024-06-30 13F NEW MTN FIN COM 647551100 14,104 -16,672 -54.17 173 -55.78 0.0000
2024-05-14 2024-03-31 13F NEW MTN FIN COM 647551100 30,776 12,279 66.38 390 65.53 0.0001
2024-02-13 2023-12-31 13F NEW MTN FIN COM 647551100 18,497 -14,473 -43.90 235 -44.84 0.0000
2023-11-13 2023-09-30 13F NEW MTN FIN COM 647551100 32,970 -729 -2.16 427 1.67 0.0001
2023-08-11 2023-06-30 13F NEW MTN FIN COM 647551100 33,699 8,029 31.28 419 34.29 0.0001
2023-05-15 2023-03-31 13F NEW MTN FIN COM 647551100 25,670 1,456 6.01 312 4.35 0.0001
2023-02-13 2022-12-31 13F NEW MTN FIN COM 647551100 24,214 -3,037 -11.14 300 -4.78 0.0001
2022-11-14 2022-09-30 13F NEW MTN FIN COM 647551100 27,251 2,962 12.19 314 8.65 0.0001
2022-08-12 2022-06-30 13F NEW MTN FIN COM 647551100 24,289 3,970 19.54 289 2.48 0.0001
2022-05-13 2022-03-31 13F NEW MTN FIN COM 647551100 20,319 20,319 282 0.0000
2021-11-15 2021-09-30 13F NEW MTN FIN COM 647551100 0 -20,379 -100.00 0 -100.00
2021-08-13 2021-06-30 13F NEW MTN FIN COM 647551100 20,379 -14,169 -41.01 268 -37.38 0.0000
2021-05-12 2021-03-31 13F NEW MTN FIN COM 647551100 34,548 -396 -1.13 428 7.81 0.0001
2021-02-11 2020-12-31 13F NEW MTN FIN COM 647551100 34,944 -15,853 -31.21 397 -18.31 0.0001
2020-11-16 2020-09-30 13F NEW MTN FIN COM 647551100 50,797 157 0.31 486 3.18 0.0001
2020-08-14 2020-06-30 13F NEW MTN FIN COM 647551100 50,640 12,139 31.53 471 79.77 0.0001
2020-05-14 2020-03-31 13F NEW MTN FIN COM 647551100 38,501 -50,723 -56.85 262 -78.61 0.0001
2020-02-14 2019-12-31 13F NEW MTN FIN COM 647551100 89,224 52,917 145.75 1,225 147.47 0.0003
2019-11-13 2019-09-30 13F NEW MTN FIN COM 647551100 36,307 -7,463 -17.05 495 -19.12 0.0001
2019-08-13 2019-06-30 13F NEW MTN FIN COM 647551100 43,770 10,017 29.68 612 33.62 0.0001
2019-05-13 2019-03-31 13F NEW MTN FIN COM 647551100 33,753 1,126 3.45 458 11.71 0.0001
2019-02-12 2018-12-31 13F NEW MTN FIN COM 647551100 32,627 -667 -2.00 410 -8.69 0.0001
2018-11-14 2018-09-30 13F NEW MTN FIN COM 647551100 33,294 3,982 13.58 449 12.53 0.0001
2018-09-18 2018-06-30 13F/A-1 NEW MTN FIN COM 647551100 29,312 -7,218 -19.76 399 -16.87 0.0001
2018-08-14 2018-06-30 13F NEW MTN FIN COM 647551100 34,279 -2,251 466
2018-05-09 2018-03-31 13F NEW MTN FIN COM 647551100 36,530 -1,812 -4.73 480 -7.69 0.0001
2018-02-14 2017-12-31 13F NEW MTN FIN COM 647551100 38,342 -615 -1.58 520 -6.31 0.0001
2017-11-13 2017-09-30 13F NEW MTN FIN COM 647551100 38,957 1,529 4.09 555 2.02 0.0001
2017-08-11 2017-06-30 13F NEW MTN FIN COM 647551100 37,428 -1,028 -2.67 544 -5.06 0.0002
2017-05-12 2017-03-31 13F NEW MTN FIN COM 647551100 38,456 1,008 2.69 573 8.52 0.0002
2017-02-13 2016-12-31 13F NEW MTN FIN COM 647551100 37,448 -12,739 -25.38 528 -23.59 0.0002
2016-11-09 2016-09-30 13F NEW MTN FIN COM 647551100 50,187 -80 -0.16 691 6.64 0.0002
2016-08-12 2016-06-30 13F NEW MTN FIN COM 647551100 50,267 -159 -0.32 648 -5.40 0.0002
2016-08-19 2016-03-31 13F/A-1 NEW MTN FIN COM 647551100 50,426 50,426 0.00 685 0.0002
2016-05-13 2016-03-31 13F NEW MTN FIN COM 647551100 50,423 637
2015-08-13 2015-06-30 13F New Mtn Fin COMM 647551100 0 -64,388 -100.00 0 -100.00
2015-05-14 2015-03-31 13F New Mtn Fin COMM 647551100 64,388 13,394 26.27 941 23.49 0.0003
2015-02-12 2014-12-31 13F New Mtn Fin COM 647551100 50,994 800 1.59 762 3.39 0.0002
2014-11-13 2014-09-30 13F New Mtn Fin COMM 647551100 50,194 -308,705 -86.01 737 -86.18 0.0002
2014-08-14 2014-06-30 13F NEW MTN FIN com 647551100 358,899 -183,559 -33.84 5,333 -32.43 0.0017
2014-05-14 2014-03-31 13F NEW MTN FIN COMM 647551100 542,458 31,257 6.11 7,893 2.67 0.0025
2014-02-21 2013-12-31 13F/A-1 NEW MTN FIN COM 647551100 511,201 75,281 17.27 7,688 22.38 0.0025
2014-02-12 2013-12-31 13F NEW MTN FIN COM 647551100 511,201 7,688
2013-11-13 2013-09-30 13F NEW MTN FIN COM 647551100 435,920 114,644 35.68 6,282 38.10 0.0022
2013-08-09 2013-06-30 13F NEW MTN FIN COM 647551100 321,276 321,276 4,549 0.0016
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.