---
title: "StemBioSys Inc. SEC filings"
url: https://altstreet.investments/edgar/1568861
kind: edgar-entity
updated: 2026-09-22
publisher: AltStreet (https://altstreet.investments)
license: Public factual pages may be read, quoted and cited with attribution and a link. Bulk redistribution is not permitted.
---

# StemBioSys Inc.: SEC filings and what they report

StemBioSys Inc. is a Delaware corporation that filed a Form D on 2020-12-30 to raise equity capital under the Rule 506(b) exemption. The filing does not disclose the amount sold, investor count, minimum investment, or first sale date, indicating the offering was pre-open or details were withheld at filing. No parent platform or related fund family was identified in available records.

| Field | Value |
| --- | --- |
| Entity | StemBioSys Inc. |
| CIK | 1568861 |
| Filing family | 506(b) |
| Entity type | platform company |
| Newest fact-bearing filing | December 30, 2020, accession 0001568861-20-000003 |
| Total sold (as reported) | $0 |
| Vintage | 2020 |

## Related persons (Form D Item 3)

| Name | Relationship |
| --- | --- |
| Mark Horsey | Executive Officer |
| Becky Cap | Director |
| Robert Hutchens | Executive Officer, Director |
| Robert Langer | Director |
| John Feik | Director |
| Ian Clements | Director |
| Jean Cheever | Director |
| Paul Castella | Director |
| Catherine Burzik | Director |
| Steven Davis | Director |
| Xiao-Dong Chen | Director |


## Filings (10 on record, newest first)

| Date | Form | Family | SEC link |
| --- | --- | --- | --- |
| April 22, 2026 | C-TR | Form C | https://www.sec.gov/Archives/edgar/data/1568861/000156886126000002/ |
| April 10, 2025 | C-AR | Form C | https://www.sec.gov/Archives/edgar/data/1568861/000166516025000583/ |
| September 25, 2024 | C-U | Form C | https://www.sec.gov/Archives/edgar/data/1568861/000166516024001346/ |
| June 5, 2024 | C | Form C | https://www.sec.gov/Archives/edgar/data/1568861/000166516024000955/ |
| December 30, 2020 | D | Form D | https://www.sec.gov/Archives/edgar/data/1568861/000156886120000003/ |
| January 9, 2020 | D | Form D | https://www.sec.gov/Archives/edgar/data/1568861/000156886120000001/ |
| June 19, 2019 | D | Form D | https://www.sec.gov/Archives/edgar/data/1568861/000156886119000001/ |
| May 15, 2018 | D/A | Form D | https://www.sec.gov/Archives/edgar/data/1568861/000156886118000001/ |
| December 5, 2016 | D/A | Form D | https://www.sec.gov/Archives/edgar/data/1568861/000156886116000005/ |
| April 20, 2016 | D | Form D | https://www.sec.gov/Archives/edgar/data/1568861/000156886116000003/ |


## More

- Entity page (HTML, with events, parties and the platform record): https://altstreet.investments/edgar/1568861
- SEC EDGAR filing index: https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001568861&owner=include&count=40
- Signal history, evidence passages and the entity graph are AltStreet Terminal features: https://altstreet.investments/terminal

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Source page: https://altstreet.investments/edgar/1568861
Machine index: https://altstreet.investments/llms.txt
AltStreet reads what platforms, funds and issuers file with the SEC and what they tell investors, and publishes the difference. Figures are as filed or as captured on the date stated; nothing here is investment advice.