NASDAQ:ATAI

Ata Stock Insider Trading

Healthcare > Biotechnology

Buy ATAI

*Your capital is at risk

$4.53

-0.280 (-5.82%)

At Close: Jun 03, 2026

ATA Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 98.09. In total, the insiders bought 50.41M and sold 700.8K ATAI 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)	98.09
● Buy	50.41M shares
● Sell	700.8K shares
87% Buy Activity Moderate Positive Correlation
Buy Signal High Confidence Jun 01, 2026 Analysis Breakdown: Strongly supported by a very high Insider Power Score of 98.09. Partially supported by a positive historical correlation. Confidence increased due to high data reliability score of 100. Supported by overwhelming buy-side pressure (87% buys).

Historical Insider Trades

Date	Type	Person	Role	Amount
Nov 25, 2025 Buy	Stock Option A-Award	Feilding-mellen Cosmo Director	Director	10 000 Value: $44.8K
Nov 25, 2025 Sell	Stock Option D-Return	Feilding-mellen Cosmo Director	Director	40 400 Value: $181.0K
Nov 05, 2025 Buy	Stock Option A-Award	Hershberg Robert Director	Director	456 011 Value: $615.6K
Nov 05, 2025 Buy	Stock Option A-Award	Hershberg Robert Director	Director	103 000 Value: $461.4K
Nov 05, 2025 Buy	Stock Option A-Award	Hershberg Robert Director	Director	97 716 Value: $131.9K
Nov 05, 2025 Buy	Stock Option A-Award	Hershberg Robert Director	Director	62 394 Value: $84.2K
Nov 05, 2025 Buy	Common Shares A-Award	Feilding-mellen Cosmo Director	Director	7 702 990 Value: $34.5M
Nov 05, 2025 Buy	Stock Option A-Award	Feilding-mellen Cosmo Director	Director	103 000 Value: $461.4K
Nov 05, 2025 Buy	Stock Option A-Award	Feilding-mellen Cosmo Director	Director	40 400 Value: $181.0K
Nov 05, 2025 Buy	Common Stock J-Other	Hershberg Robert Insider	Other	0 Value: $0
Nov 05, 2025 Buy	Common Stock J-Other	Feilding-mellen Cosmo Insider	Other	0 Value: $0
Nov 04, 2025 Buy	Stock Option A-Award	Braunstein Scott Director	Director	56 818 Value: $300.0K
Oct 01, 2025 Buy	Stock Option A-Award	Barrett Christopher Ryan Cave See Remarks	Officer	175 000 Value: $910.0K
Oct 01, 2025 Buy	Common Shares	Barrett Christopher Ryan Cave See Remarks	Officer	0 Value: $0
Oct 01, 2025 Buy	Stock Option	Barrett Christopher Ryan Cave See Remarks	Officer	347 000 Value: $846.7K
Oct 01, 2025 Buy	Stock Option	Barrett Christopher Ryan Cave See Remarks	Officer	284 832 Value: $1.62M
Oct 01, 2025 Buy	Stock Option	Barrett Christopher Ryan Cave See Remarks	Officer	53 680 Value: $628.6K
Oct 01, 2025 Buy	Stock Option	Barrett Christopher Ryan Cave See Remarks	Officer	221 764 Value: $3.33M
Oct 01, 2025 Buy	Stock Option	Barrett Christopher Ryan Cave See Remarks	Officer	231 900 Value: $1.28M
Oct 01, 2025 Buy	Stock Option	Barrett Christopher Ryan Cave See Remarks	Officer	71 620 Value: $204.8K
Oct 01, 2025 Buy	Stock Option	Barrett Christopher Ryan Cave See Remarks	Officer	400 000 Value: $472.0K
Oct 01, 2025 Buy	Stock Option	Barrett Christopher Ryan Cave See Remarks	Officer	550 000 Value: $1.01M
Oct 01, 2025 Buy	Stock Option	Barrett Christopher Ryan Cave See Remarks	Officer	757 915 Value: $1.14M
Oct 01, 2025 Buy	Stock Option	Barrett Christopher Ryan Cave See Remarks	Officer	757 915 Value: $1.14M
Oct 01, 2025 Buy	Stock Option	Barrett Christopher Ryan Cave See Remarks	Officer	550 000 Value: $1.01M

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

ABOUT ATA INC.

Atai Life Sciences N.V., through its subsidiary, ATAI Life Sciences AG, operates as a clinical-stage biopharmaceutical company. It engages in developing various therapeutic candidates that focuses on various mental health disorders. The company's therapeutic candidates include PCN-101, a subcutaneous formulation of R-ketamine for the treatment of treatment-resistant depression (TRD); RL-007, a cholinergic, glutamatergic, and GABA-B receptor modul...

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