# Duo Oncology Inc. — Form D/A

Duo Oncology Inc. of PITTSBURGH, PA, a company, filed a Form D amendment with the SEC on 2026-06-09. The offering totals $3.0M, of which $1.4M was reported sold. Industry: Pharmaceuticals.

## Offering

- Filed: 2026-06-09
- Form: D/A
- Accession: 0001843372-26-000004
- Industry: Pharmaceuticals
- Exemptions: 06b
- Total offering: $3.0M
- Amount sold: $1.4M
- Remaining: $1.6M
- Minimum investment: $25K
- Investors: 13
- Security types: debt
- Revenue range: Decline to Disclose
- SEC file number: 021-548506

## Issuer

- Name: Duo Oncology Inc.
- CIK: 0001843372
- Entity type: Corporation
- Jurisdiction: DELAWARE
- Incorporated: 2020
- Address: 218 OAKLAND AVE, PITTSBURGH, PA, 15213
- Phone: 412-709-1659

## Officers, directors & promoters (26)

_Showing 25 of 26 people._

| Name | Role | Location |
| --- | --- | --- |
| KATHERINE EICHINGER | Related Person | PITTSBURGH, PA |
| JOE GATTO | Related Person | PITTSBURGH, PA |
| JING-ZHOU HOU | Related Person | PITTSBURGH, PA |
| SONG LI | Related Person | PITTSBURGH, PA |
| LUSONG LUO | Related Person | PITTSBURGH, PA |
| VICTORIA MANAX | Related Person | PITTSBURGH, PA |
| STANLEY MARKS | Related Person | PITTSBURGH, PA |
| SAM ROTHSTEIN | Related Person | PITTSBURGH, PA |
| STEPHEN THORNE | Related Person | PITTSBURGH, PA |
| Robert Ashley | Director | Fairfax, VA |
| LUSONG LUO | Director | PITTSBURGH, PA |
| JINGJING SUN | Promoter | PITTSBURGH, PA |
| JING-ZHOU HOU | Director | PITTSBURGH, PA |
| JING-ZHOU HOU | Executive Officer | PITTSBURGH, PA |
| JING-ZHOU HOU | Promoter | PITTSBURGH, PA |
| SONG LI | Director | PITTSBURGH, PA |
| SONG LI | Promoter | PITTSBURGH, PA |
| STANLEY MARKS | Director | PITTSBURGH, PA |
| STEPHEN THORNE | Director | PITTSBURGH, PA |
| STEPHEN THORNE | Executive Officer | PITTSBURGH, PA |
| STEPHEN THORNE | Promoter | PITTSBURGH, PA |
| VICTORIA MANAX | Director | PITTSBURGH, PA |
| SAM ROTHSTEIN | Director | PITTSBURGH, PA |
| SAM ROTHSTEIN | Executive Officer | PITTSBURGH, PA |
| SAM ROTHSTEIN | Promoter | PITTSBURGH, PA |

## Other filings by this issuer (5)

| Filed | Form | Offering | Sold |
| --- | --- | --- | --- |
| [2026-08-07](https://search.stillhousedata.com/formd/0001843372-26-000005) | D/A | $3.5M | $1.6M |
| [2025-06-10](https://search.stillhousedata.com/formd/0001843372-25-000002) | D | $3.0M | $400K |
| [2023-08-11](https://search.stillhousedata.com/formd/0001843372-23-000002) | D/A | $4.3M | $4.3M |
| [2023-02-08](https://search.stillhousedata.com/formd/0001843372-23-000001) | D | $4.2M | $2.7M |
| [2021-02-08](https://search.stillhousedata.com/formd/0001843372-21-000002) | D | $1.5M | $1.1M |

## More

- [CIK 1843372 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1843372&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/formd/0001843372-26-000004.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.