New Mountain Finance Corporation
US ˙ NasdaqGS ˙ US6475511001

SecurityNMFC / New Mountain Finance Corporation
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership450,470 shares
Latest Disclosed Value $ 3,495,809
Advisor Group Holdings, Inc. reports 4.58% increase in ownership of NMFC / New Mountain Finance Corporation

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 450,470 shares of New Mountain Finance Corporation (US:NMFC) valued at $3,495,647 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 430,731 shares of New Mountain Finance Corporation. This represents a change in shares of 4.58% during the quarter. The current value of the position is $3,608,265 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)
2026-05-15 2026-03-31 13F NEW MTN FIN COM 647551100 450,470 19,739 4.58 3,496 -11.90 0.0030
2026-02-17 2025-12-31 13F NEW MTN FIN COM 647551100 430,731 22,873 5.61 3,967 -8.43 0.0058
2025-11-14 2025-09-30 13F NEW MTN FIN COM 647551100 407,858 13,684 3.47 4,333 4.18 0.0061
2025-09-04 2025-06-30 13F/A-1 NEW MTN FIN COM 647551100 394,174 28,650 7.84 4,159 3.13 0.0074
2025-08-13 2025-06-30 13F NEW MTN FIN COM 647551100 345,508 -20,016 3,888 0.0045
2025-05-12 2025-03-31 13F NEW MTN FIN COM 647551100 365,524 24,016 7.03 4,032 4.86 0.0090
2025-06-06 2024-12-31 13F/A-1 NEW MTN FIN COM 647551100 341,508 -2,674 -0.78 3,846 -6.74 0.0086
2025-02-07 2024-12-31 13F NEW MTN FIN COM 647551100 344,182 0 4,124 0.0105
2024-11-13 2024-09-30 13F NEW MTN FIN COM 647551100 344,182 18,898 5.81 4,124 3.57 0.0093
2024-08-13 2024-06-30 13F NEW MTN FIN COM 647551100 325,284 -48,110 -12.88 3,982 -15.85 0.0094
2024-05-10 2024-03-31 13F NEW MTN FIN COM 647551100 373,394 2,669 0.72 4,731 0.34 0.0106
2024-02-12 2023-12-31 13F NEW MTN FIN COM 647551100 370,725 10,855 3.02 4,716 1.18 0.0083
2023-11-13 2023-09-30 13F NEW MTN FIN COM 647551100 359,870 6,721 1.90 4,661 6.05 0.0069
2023-08-21 2023-06-30 13F/A-1 NEW MTN FIN COM 647551100 353,149 -4,714 -1.32 4,394 0.94 0.0079
2023-08-10 2023-06-30 13F NEW MTN FIN COM 647551100 353,149 -4,714 4,394 0.0012
2023-05-12 2023-03-31 13F NEW MTN FIN COM 647551100 357,863 13,283 3.85 4,354 2.14 0.0082
2023-02-10 2022-12-31 13F NEW MTN FIN COM 647551100 344,580 5,633 1.66 4,262 9.06 0.0086
2022-11-14 2022-09-30 13F NEW MTN FIN COM 647551100 338,947 3,142 0.94 3,908 -2.37 0.0089
2022-08-10 2022-06-30 13F NEW MTN FIN COM 647551100 335,805 5,351 1.62 4,003 -10.73 0.0088
2022-05-04 2022-03-31 13F NEW MTN FIN COM 647551100 330,454 4,893 1.50 4,484 0.54 0.0087
2022-02-03 2021-12-31 13F NEW MTN FIN COM 647551100 325,561 7,773 2.45 4,460 5.41 0.0084
2021-11-05 2021-09-30 13F NEW MTN FIN COM 647551100 317,788 -16,672 -4.98 4,231 -3.95 0.0088
2021-08-02 2021-06-30 13F NEW MTN FIN COM 647551100 334,460 14,535 4.54 4,405 11.04 0.0095
2021-05-13 2021-03-31 13F NEW MTN FIN COM 647551100 319,925 12,806 4.17 3,967 13.70 0.0095
2021-02-10 2020-12-31 13F NEW MTN FIN COM 647551100 307,119 26,252 9.35 3,489 29.99 0.0093
2020-11-12 2020-09-30 13F NEW MTN FIN COM 647551100 280,867 53,877 23.74 2,684 27.32 0.0080
2020-08-14 2020-06-30 13F NEW MTN FIN COM 647551100 226,990 -25,011 -9.92 2,108 23.20 0.0071
2020-05-18 2020-03-31 13F NEW MTN FIN COM 647551100 252,001 252,001 1,711 0.0070
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.