# X4 Pharmaceuticals, Inc.: Form D filings

X4 Pharmaceuticals, Inc., a pharmaceuticals company in Cambridge, MA, filed 4 Form D notices with the SEC between 2015 and 2018. The latest, on September 21, 2018, reports $35 million sold of a $35 million offering to 214 investors.

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## The full lists

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- [Form D filings in Massachusetts](https://specstream.ai/data/form-d/state/massachusetts): 1,533 rows, by operating companies, filed since November 1, 2024, $76.65, or the new rows each week for $19 a month. Buy: https://specstream.ai/data/form-d/state/massachusetts
- [Form D filings in Pharmaceuticals](https://specstream.ai/data/form-d/industry/pharmaceuticals): 346 rows, by operating companies, filed since November 1, 2024, $17.30, or the new rows each week for $19 a month. Buy: https://specstream.ai/data/form-d/industry/pharmaceuticals

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## Company details from the filing

- Address: 955 Massachusetts Avenue, Cambridge, MA, 02139
- Phone: (339) 203-1076
- Industry: Pharmaceuticals
- Entity type: Corporation
- Incorporated in: Delaware
- Year incorporated: 2014
- Revenue range: Decline to Disclose
- Exemptions claimed: Rule 506(b)
- SEC identifier (CIK): 1632304

## Form D filings

| Filed | Type | Offering | Sold | Remaining | Investors | First sale | Filing |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Sep 21, 2018 | Amendment | $34,999,150 | $34,999,150 | $0 | 214 | Nov 1, 2017 | [sec.gov](https://www.sec.gov/Archives/edgar/data/1632304/000163230418000002/0001632304-18-000002-index.htm) |
| Nov 15, 2017 | New notice | $30,000,000 | $25,838,812 | $4,161,188 | 213 | Nov 1, 2017 | [sec.gov](https://www.sec.gov/Archives/edgar/data/1632304/000163230417000001/0001632304-17-000001-index.htm) |
| Aug 28, 2015 | New notice | $37,500,000 | $37,499,999 | $1 | 220 | Aug 14, 2015 | [sec.gov](https://www.sec.gov/Archives/edgar/data/1632304/000163230415000002/0001632304-15-000002-index.htm) |
| Jan 30, 2015 | New notice | $1,200,000 | $735,000 | $465,000 | 11 | Jan 16, 2015 | [sec.gov](https://www.sec.gov/Archives/edgar/data/1632304/000163230415000001/0001632304-15-000001-index.htm) |

## Executive officers and directors named in the filing

| Name | Role | Note in the filing |
| --- | --- | --- |
| Adam Mostafa | Executive Officer |  |
| Michael Gilman | Director |  |
| Paula Ragan | Executive Officer, Director |  |
| Michael Wyzga | Director |  |
| Isaac Blech | Director |  |
| Alan E. Walts | Executive Officer, Director |  |

## Other pharmaceuticals companies in Massachusetts that filed recently

- [BridgeHealth Pharmaceuticals, Inc.](https://specstream.ai/data/form-d/company/bridgehealth-pharmaceuticals-inc-2162724) $3.5 million · Nov 5, 2026
- [Land Therapeutics Inc.](https://specstream.ai/data/form-d/company/land-therapeutics-inc-2051104) $17.5 million · Oct 21, 2026
- [Crosslink Therapeutics Inc.](https://specstream.ai/data/form-d/company/crosslink-therapeutics-inc-2067583) $5.5 million · Oct 20, 2026
- [Sentonix, Inc.](https://specstream.ai/data/form-d/company/sentonix-inc-2039609) $12.7 million · Aug 20, 2026

[Every Form D from the week of Sep 17, 2018](https://specstream.ai/data/form-d/week/2018-09-17) · [All recent filings in Massachusetts](https://specstream.ai/data/form-d/state/massachusetts) · [All recent Pharmaceuticals filings](https://specstream.ai/data/form-d/industry/pharmaceuticals)

Read from SEC EDGAR. Amount sold is what X4 Pharmaceuticals, Inc. reported on the day it filed; on an offering that is still open, a later amendment can raise it. Free to reuse with credit to SpecStream under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/).