---
title: "Day One Biopharmaceuticals Received Notice of Delisting"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/283839448.md"
description: "Day One Biopharmaceuticals has confirmed the completion of its merger and requested Nasdaq to maintain a trading halt while filing a Form 25 to delist its shares. The company plans to file a Form 15 to terminate registration and suspend SEC reporting obligations. Trading was halted on April 22, 2026."
datetime: "2026-04-23T13:03:00.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/283839448.md)
  - [en](https://longbridge.com/en/news/283839448.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/283839448.md)
---

# Day One Biopharmaceuticals Received Notice of Delisting

On April 23, 2026, the company confirmed the completion of its merger and asked Nasdaq to maintain a trading halt and file a Form 25 to delist and deregister its shares. The company also intends to file a Form 15 to terminate registration and suspend SEC reporting obligations. Trading was halted beginning the evening of April 22, 2026.

Original SEC Filing: Day One Biopharmaceuticals, Inc. \[ DAWN \] - 8-K - Apr. 23, 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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