NASDAQ:DAWN

Day One Biopharmaceuticals Stock Insider Trading

Healthcare > Biotechnology

Buy DAWN

*Your capital is at risk

$21.53

+0 (+0%)

At Close: Jun 03, 2026

Day One Biopharmaceuticals Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -88.43. In total, the insiders bought 2.06M and sold 18.5M DAWN shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	-88.43
● Buy	2.06M shares
● Sell	18.5M shares
47% Buy Activity Moderate Negative Correlation
Sell Signal High Confidence Apr 23, 2026 Analysis Breakdown: Strongly supported by a very low Insider Power Score of -88.43. Partially supported by a negative historical correlation. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Apr 23, 2026 Sell	Pre-Funded Warrant (right to buy) D-Return	Ai Day1 Llc 10 Percent Owner	10% Owner	827 586 Value: $83
Apr 23, 2026 Sell	Common Stock U-Tender	Ai Day1 Llc 10 Percent Owner	10% Owner	12 929 322 Value: $0.28B
Apr 23, 2026 Sell	Stock Option (right to buy Common Stock) D-Return	Nicholson Garry A Director	Director	22 500 Value: $157.7K
Apr 23, 2026 Sell	Stock Option (right to buy Common Stock) D-Return	Merendino Lauren Chief Commercial Officer	Officer	90 000 Value: $809.1K
Apr 23, 2026 Sell	Restricted Stock Unit (RSU) D-Return	Merendino Lauren Chief Commercial Officer	Officer	69 375 Value: $0
Apr 23, 2026 Sell	Restricted Stock Unit (RSU) D-Return	York Charles N Ii COO And CFO	C-Suite Officer	118 125 Value: $0
Apr 23, 2026 Sell	Stock Option (right to buy Common Stock) D-Return	Dubow Adam Gen Counsel & Secretary	Officer	90 000 Value: $809.1K
Apr 23, 2026 Sell	Restricted Stock Unit (RSU) D-Return	Dubow Adam Gen Counsel & Secretary	Officer	65 625 Value: $0
Apr 23, 2026 Sell	Stock Option (right to buy Common Stock) D-Return	Holles Natalie C. Director	Director	32 335 Value: $290.7K
Apr 23, 2026 Sell	Common Stock D-Return	Bender Jeremy Chief Executive Officer	CEO / President	808 285 Value: $81
Apr 23, 2026 Sell	Stock Option (right to buy Common Stock) D-Return	Bender Jeremy Chief Executive Officer	CEO / President	286 000 Value: $2.57M
Apr 23, 2026 Sell	Stock Option (right to buy Common Stock) D-Return	Bender Jeremy Chief Executive Officer	CEO / President	355 000 Value: $3.96M
Apr 23, 2026 Sell	Restricted Stock Unit (RSU) D-Return	Bender Jeremy Chief Executive Officer	CEO / President	222 188 Value: $0
Apr 23, 2026 Sell	Common Stock D-Return	Vasconcelles Michael Head Of Research And Dev.	Officer	4 397 Value: $0
Apr 23, 2026 Sell	Stock Option (right to buy Common Stock) D-Return	Vasconcelles Michael Head Of Research And Dev.	Officer	346 000 Value: $2.30M
Apr 23, 2026 Sell	Stock Option (right to buy Common Stock) D-Return	Vasconcelles Michael Head Of Research And Dev.	Officer	171 000 Value: $1.91M
Apr 23, 2026 Sell	Restricted Stock Unit (RSU) D-Return	Vasconcelles Michael Head Of Research And Dev.	Officer	106 875 Value: $0
Apr 23, 2026 Sell	Common Stock D-Return	York Charles N Ii COO And CFO	C-Suite Officer	312 025 Value: $31
Apr 23, 2026 Sell	Stock Option (right to buy Common Stock) D-Return	York Charles N Ii COO And CFO	C-Suite Officer	162 000 Value: $1.46M
Apr 23, 2026 Sell	Stock Option (right to buy Common Stock) D-Return	York Charles N Ii COO And CFO	C-Suite Officer	188 000 Value: $2.10M
Apr 23, 2026 Sell	Restricted Stock Unit (RSU) D-Return	Josey John A. Director	Director	15 000 Value: $0
Apr 23, 2026 Sell	Stock Option (right to buy Common Stock) D-Return	Josey John A. Director	Director	22 500 Value: $157.7K
Apr 23, 2026 Sell	Stock Option (right to buy Common Stock) D-Return	Josey John A. Director	Director	32 335 Value: $290.7K
Apr 23, 2026 Sell	Common Stock D-Return	Josey John A. Director	Director	72 292 Value: $7
Apr 23, 2026 Sell	Restricted Stock Unit (RSU) D-Return	Ramasastry Saira Director	Director	15 000 Value: $0

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks