---
title: "Rapid Micro Biosystems Raises $8.9M Net in Underwritten Offering, Adds $140K D&O Purchase"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/286969296.md"
description: "Rapid Micro Biosystems has raised approximately $8.9 million through an underwritten offering and an additional $140,000 from a concurrent purchase by certain directors and officers. The offering includes 3,581,000 shares and warrants, priced at $1.955 per share unit. Proceeds will be used for working capital and corporate purposes, with both transactions expected to close around May 20, 2026."
datetime: "2026-05-19T21:23:00.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/286969296.md)
  - [en](https://longbridge.com/en/news/286969296.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/286969296.md)
---

# Rapid Micro Biosystems Raises $8.9M Net in Underwritten Offering, Adds $140K D&O Purchase

Rapid Micro Biosystems executed two capital-raising transactions: an underwritten offering expected to deliver approximately $8.9 million in net proceeds, and a concurrent registered direct purchase by certain directors and officers for about $140,000. The underwritten deal includes 3,581,000 shares paired with Series A and Series B warrants, plus up to 1,463,000 pre-funded warrants with accompanying warrants, priced at $1.955 per share unit and $1.945 per pre-funded unit. The concurrent insider purchase mirrors the warrant terms and is contingent on the closing of the underwritten offering, both expected to close on or about May 20, 2026. Proceeds will fund working capital and general corporate purposes.

**Agreement 1: Rapid Micro Biosystems Prices Underwritten Equity and Warrant Offering for $8.9M Net**

-   **Agreement type**: Underwriting Agreement for underwritten equity and warrant offering
-   **Counterparty**: TD Securities (USA) and Lake Street Capital Markets, as representatives of the underwriters
-   **Signed / Effective**: May 18 2026 / May 18 2026
-   **Duration / Termination**: At will
-   **Reason**: Raise capital for working capital and corporate purposes

**Agreement 2: Rapid Micro Biosystems Adds $140K Director Purchase in Concurrent Registered Offering**

-   **Agreement type**: Securities Purchase Agreement for registered direct equity and warrant purchase
-   **Counterparty**: Certain directors and officers of Rapid Micro Biosystems
-   **Signed / Effective**: May 18 2026 / May 18 2026
-   **Duration / Termination**: At will
-   **Reason**: Supplement capital alongside the underwritten raise

Original SEC Filing: RAPID MICRO BIOSYSTEMS, INC. \[ RPID \] - 8-K - May. 19, 2026

**Disclaimer**

This is an AI-powered summary. It may contain inaccuracies. Consider verifying important information with the source. Please note this summary is solely based on documents filed with the SEC.

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