# PDT Mosaic Offshore Holdings, LLC — Form D/A

PDT Mosaic Offshore Holdings, LLC of NEW YORK, NY, a pooled investment fund, filed a Form D amendment with the SEC on 2026-05-29. $3.4B was reported sold. Industry: Pooled Investment Fund.

## Offering

- Filed: 2026-05-29
- Form: D/A
- Accession: 0001564702-26-000010
- Industry: Pooled Investment Fund
- Exemptions: 06b,3C,3C.7
- Amount sold: $3.4B
- Investors: 10
- Security types: fund interests
- SEC file number: 021-242829

## Issuer

- Name: PDT Mosaic Offshore Holdings, LLC
- CIK: 0001645931
- Entity type: Limited Liability Company
- Jurisdiction: DELAWARE
- Incorporated: 2012
- Address: 60 COLUMBUS CIRCLE 18TH FLOOR, NEW YORK, NY, 10023
- Phone: 212-621-0400

## Officers, directors & promoters (6)

| Name | Role | Location |
| --- | --- | --- |
| Brian Thomas | Related Person | New York, NY |
| Dede Welles | Related Person | New York, NY |
| Brian Thomas | Executive Officer | New York, NY |
| Dede Welles | Executive Officer | New York, NY |
| Amy Wong | Executive Officer | CUPERTINO, CA |
| Douglas Gschwind | Executive Officer | New York, NY |

## Other filings by this issuer (11)

| Filed | Form | Offering | Sold |
| --- | --- | --- | --- |
| [2025-05-30](https://search.stillhousedata.com/formd/0001564702-25-000015) | D/A | — | $2.2B |
| [2024-05-31](https://search.stillhousedata.com/formd/0001564702-24-000008) | D/A | — | $2.2B |
| [2023-05-31](https://search.stillhousedata.com/formd/0001564702-23-000014) | D/A | — | $2.2B |
| [2022-05-31](https://search.stillhousedata.com/formd/0001645931-22-000001) | D/A | — | $2.2B |
| [2021-06-01](https://search.stillhousedata.com/formd/0001645931-21-000001) | D/A | — | $2.2B |
| [2020-06-12](https://search.stillhousedata.com/formd/0001645931-20-000001) | D/A | — | $2.0B |
| [2019-06-14](https://search.stillhousedata.com/formd/0001645931-19-000001) | D/A | — | $2.0B |
| [2018-06-19](https://search.stillhousedata.com/formd/0001645931-18-000001) | D/A | — | $1.7B |
| [2017-06-19](https://search.stillhousedata.com/formd/0001645931-17-000001) | D/A | — | $1.3B |
| [2016-06-24](https://search.stillhousedata.com/formd/0001645931-16-000002) | D/A | — | $871.6M |
| [2015-06-30](https://search.stillhousedata.com/formd/0001645931-15-000001) | D | — | — |

## More

- [CIK 1645931 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1645931&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/formd/0001564702-26-000010.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.