---
title: "Series 51-1, a series of StartEngine Private LLC SEC filings"
url: https://altstreet.investments/edgar/2080053
kind: edgar-entity
updated: 2026-07-31
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.
---

# Series 51-1, a series of StartEngine Private LLC: SEC filings and what they report

Series 51-1, a series of StartEngine Private LLC, filed an original Form D on August 19, 2025, reporting $120K raised from 7 investors under Rule 506(c). The offering carries a $15K minimum investment and is part of the StartEngine platform, a pre-IPO investment sponsor with 117 related EDGAR entities. The entity is incorporated in Delaware and issued equity securities.

| Field | Value |
| --- | --- |
| Entity | Series 51-1, a series of StartEngine Private LLC |
| CIK | 2080053 |
| Filing family | 506(c) |
| Entity type | single deal spv |
| Manager (as filed) | StartEngine |
| Platform | StartEngine (https://altstreet.investments/platforms/reviews/startengine) |
| Newest fact-bearing filing | August 19, 2025, accession 0002080053-25-000001 |
| Total offering amount (as filed) | $793,040 |
| Total sold (as reported) | $119,715 |
| Investors (as reported) | 7 |
| Minimum investment (as filed) | $14,950 |
| Vintage | 2025 |

## Related persons (Form D Item 3)

| Name | Relationship |
| --- | --- |
| HOWARD MARKS | Director |


## Filings (1 on record, newest first)

| Date | Form | Family | SEC link |
| --- | --- | --- | --- |
| August 19, 2025 | D | Form D | https://www.sec.gov/Archives/edgar/data/2080053/000208005325000001/ |


## More

- Entity page (HTML, with events, parties and the platform record): https://altstreet.investments/edgar/2080053
- SEC EDGAR filing index: https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0002080053&owner=include&count=40
- Other issuers on StartEngine: https://altstreet.investments/deals/platform/startengine
- 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/2080053
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.