Diameter Principal Finance Llc
SEC-registered
Investment Adviser · Mid-sized ($1B–$10B)
CRD 328057
· SEC file 801-128935
· New York, NY
· www.linkedin.com
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ADV data as of Apr 29, 2026
- Regulatory AUM
- $3.4B
- Discretionary
- $3.4B
- Clients
- 1
- Avg AUM / client
- $3.4B
- Accounts
- 1
- Employees
- 119
AUM over time
$623M
$3.4B
Dec 2023
Dec 2025
Annual snapshots from Form ADV filings · as of Apr 29, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Business development companies | 1 | $3.4B | 100.0% |
People (6)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Goodwin, Scott, Kreitler | Co Chief Executive Officer & Co President | Nov 2016 (10y) | 50% – 75% of Diameter Capital Partners Gp Llc (indirect) | |
| Lewinsohn, Jonathan, Nmn | Co Chief Executive Officer & Co President | Nov 2016 (10y) | 50% – 75% of Diameter Capital Partners Gp Llc (indirect) | |
| Carvalho, Joseph, Alexander | Co Head & Partner | Jun 2022 (4y) | ≈ 14.06% – 50% via Diameter Principal Finance Feeder Lp | |
| Pasternack, Benjamin, David | Co Head & Partner | Jun 2022 (4y) | ≈ 14.06% – 50% via Diameter Principal Finance Feeder Lp | |
| Sheth, Vishal, Harshad | Chief Financial Officer | Oct 2023 (3y) | Less than 5% | |
| Cohn, Michael, Joshua | General Counsel And Chief Compliance Officer | Aug 2024 (2y) | Less than 5% |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Diameter Principal Finance Partnership Lp | Sole Member | Jun 2022 | A | 75% or more |
| Diameter Principal Finance Feeder Lp | Limited Partner | Jun 2022 | B | ≈ 56.25% – 100% via Diameter Principal Finance Partnership Lp |
| Diameter Capital Partners Lp | Limited Partner | Jun 2022 | B | ≈ 28.13% – 75% via Diameter Principal Finance Feeder Lp |
| Diameter Management Intermediate Lp | Limited Partner | Jul 2021 | B | ≈ 7.03% – 37.5% via Diameter Capital Partners Lp |
| Sg Diameter Llc | Limited Partner | Jul 2021 | B | ≈ 7.03% – 37.5% via Diameter Capital Partners Lp |
| Diameter Principal Finance Holdings Llc | General Partner | Jun 2022 | B | GP / trustee / elected manager of Diameter Principal Finance Partnership Lp (indirect) |
| Diameter Capital Partners Gp Llc | General Partner | Nov 2016 | B | GP / trustee / elected manager of Diameter Capital Partners Lp (indirect) |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Carvalho, Joseph, Alexander: 25% – 50% of Diameter Principal Finance Feeder Lp × 75% – 100% of Diameter Principal Finance Partnership Lp × 75% – 100% direct ≈ 14.06% – 50% of the firm
- Pasternack, Benjamin, David: 25% – 50% of Diameter Principal Finance Feeder Lp × 75% – 100% of Diameter Principal Finance Partnership Lp × 75% – 100% direct ≈ 14.06% – 50% of the firm
- Diameter Principal Finance Feeder Lp: 75% – 100% of Diameter Principal Finance Partnership Lp × 75% – 100% direct ≈ 56.25% – 100% of the firm
- Diameter Capital Partners Lp: 50% – 75% of Diameter Principal Finance Feeder Lp × 75% – 100% of Diameter Principal Finance Partnership Lp × 75% – 100% direct ≈ 28.13% – 75% of the firm
- Diameter Management Intermediate Lp: 25% – 50% of Diameter Capital Partners Lp × 50% – 75% of Diameter Principal Finance Feeder Lp × 75% – 100% of Diameter Principal Finance Partnership Lp × 75% – 100% direct ≈ 7.03% – 37.5% of the firm
- Sg Diameter Llc: 25% – 50% of Diameter Capital Partners Lp × 50% – 75% of Diameter Principal Finance Feeder Lp × 75% – 100% of Diameter Principal Finance Partnership Lp × 75% – 100% direct ≈ 7.03% – 37.5% of the firm
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 04/29/2026 | 1.19 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
- • Performance-based fees
Services
- • Portfolio management for investment companies
Custody
Firm reports it does not have custody of client funds or securities (Item 9.A).
No custodian data reported or mined yet.
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Apr 29, 2026.
View current Form ADV (SEC/IAPD) ↗