DAWN - Day One Biopharmaceuticals, Inc.

Name: Day One Biopharmaceuticals, Inc. Insider Trading Data
Creator: U.S. Securities and Exchange Commission
License: https://www.sec.gov/privacy#accessibility

DAWN sits in the Biotechnology industry within the Health Care sector, so this activity is best read against the sector's broader insider trend.

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Insider Ownership

Role	Insider	Shares	Value	30d
CFO	York Charles N II	294.7K	$2.63M	-
Other	Dubow Adam	62.6K	$558.3K	-
Other	Merendino Lauren	50.8K	$452.9K	-
10%	Ai Day1 LLC	0	-	-
CEO	Bender Jeremy	0	-	-

Activity

Buys and sells only

Transactions

10 filings

Date	Insider	Role	Type	Shares	Price	Value	Chg%	3M	12M
Nov 17, 2025	Dubow Adam63	Gen Counsel &Secretary	Sale+OE	4,319	$8.91	$38,502.59	-6.5%	+34.4%	-
Nov 17, 2025	York Charles N II76	COO and CFO	Sale+OE	4,062	$8.91	$36,211.51	-1.4%	+34.4%	-
Nov 17, 2025	Merendino Lauren	Chief Commercial Officer	Sale+OE	3,726	$8.91	$33,216.17	-6.8%	+34.4%	-
Nov 17, 2025	Bender Jeremy76	Chief Executive Officer	Sale+OE	15,894	$8.91	$141,690.24	-8.2%	+34.4%	-
Aug 18, 2025	Dubow Adam63	Gen Counsel &Secretary	Sale+OE	4,365	$6.77	$29,538.39	-7.4%	+29.8%	-
Aug 18, 2025	Bender Jeremy76	Chief Executive Officer	Sale+OE	16,058	$6.77	$108,666.09	-9.1%	+29.8%	-
Aug 18, 2025	Merendino Lauren	Chief Commercial Officer	Sale+OE	3,766	$6.77	$25,484.90	-8.2%	+29.8%	-
Aug 18, 2025	York Charles N II76	COO and CFO	Sale+OE	4,106	$6.77	$27,785.71	-1.5%	+29.8%	-
May 16, 2025	Bender Jeremy76	Chief Executive Officer	Sale+OE	13,964	$6.26	$87,385.32	-8.7%	0.0%	-
May 16, 2025	York Charles N II76	COO, CFO and Secretary	Sale+OE	4,282	$6.26	$26,796.33	-1.6%	0.0%	-

Understand these filings

How to Read SEC Form 4 Filings →Understanding Insider Buying Signals →What is Insider Trading? A Complete Guide →Cluster Buying: When Multiple Insiders Buy Together →

Insider	Role	Shares	Value	Buys	Sells

Date	Ticker	Insider	Role	Type	Shares	Price	Value	Chg%	SEC