# Sun Mountain Investors, LP — Form D/A

Sun Mountain Investors, LP of BROOKLINE, MA, a pooled investment fund, filed a Form D amendment with the SEC on 2025-08-08. $60.7M was reported sold. Industry: Pooled Investment Fund.

## Offering

- Filed: 2025-08-08
- Form: D/A
- Accession: 0001765816-25-000002
- Industry: Pooled Investment Fund
- Exemptions: 06b, 3C, 3C.1
- Amount sold: $60.7M
- Minimum investment: $500K
- Investors: 27
- Date of first sale: 2019-02-01
- Security types: fund interests
- SEC file number: 021-332672

## Issuer

- Name: Sun Mountain Investors, LP
- CIK: 0001765816
- Entity type: Limited Partnership
- Jurisdiction: DELAWARE
- Incorporated: 2018
- Address: C/O SUN MOUNTAIN PARTNERS, LLC 185 PLEASANT STREET, UNIT 1, BROOKLINE, MA, 02446
- Phone: 914-806-6072

## Officers, directors & promoters (1)

| Name | Role | Location |
| --- | --- | --- |
| N/A Sun Mountain Partners, LLC | Executive Officer | Brookline, MA |

## Other filings by this issuer (9)

| Filed | Form | Offering | Sold |
| --- | --- | --- | --- |
| [2026-08-07](https://search.stillhousedata.com/formd/0001765816-26-000002) | D/A | — | $85.4M |
| [2024-08-09](https://search.stillhousedata.com/formd/0001765816-24-000001) | D/A | — | $53.3M |
| [2023-08-11](https://search.stillhousedata.com/formd/0001765816-23-000001) | D/A | — | $43.7M |
| [2022-08-11](https://search.stillhousedata.com/formd/0001765816-22-000001) | D/A | — | $38.5M |
| [2021-08-11](https://search.stillhousedata.com/formd/0001765816-21-000001) | D/A | — | $30.3M |
| [2020-08-11](https://search.stillhousedata.com/formd/0001765816-20-000003) | D/A | — | $14.5M |
| [2020-06-08](https://search.stillhousedata.com/formd/0001765816-20-000001) | D/A | — | $14.5M |
| [2019-06-12](https://search.stillhousedata.com/formd/0001765816-19-000003) | D/A | — | $14.5M |
| [2019-02-12](https://search.stillhousedata.com/formd/0001765816-19-000001) | D | — | $5.8M |

## More

- [CIK 1765816 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1765816&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/formd/0001765816-25-000002.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.