AtaiBeckley director exercises 559K ATAI stock options

AtaiBeckley Inc. director and ten percent owner Christian Angermayer exercised stock options to acquire a total of 559,232 shares of common stock on April 8, 2026.

Rhea-AI Filing Summary

AtaiBeckley Inc. director and ten percent owner Christian Angermayer exercised stock options to acquire a total of 559,232 shares of common stock on April 8, 2026. The options were exercised at prices of $1.34, $1.64 and $1.88 per share.

Following these exercises, Angermayer holds 559,232 ATAI shares directly, in addition to substantial indirect holdings, including 1,799,302 shares held by Apeiron Presight Capital Fund II, L.P. and 53,412,414 shares held by Apeiron Investment Group Ltd. The filing shows option exercises only, with no reported open-market sales.

Insider Trade Summary

559,232 shares exercised/converted

Exercise 8 txns

Insider Angermayer Christian, Apeiron Investment Group Ltd.

Role Director, 10% Owner | 10% Owner

Type	Security	Shares	Price	Value
Exercise	Stock Option	46,070	$0.00	$0.00
Exercise	Stock Option	410,162	$0.00	$0.00
Exercise	Stock Option	103,000	$0.00	$0.00
Exercise	Common Stock	46,070	$1.88	$87K
Exercise	Common Stock	410,162	$1.64	$673K
Exercise	Common Stock	103,000	$1.34	$138K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Stock Option — 249,768 contracts (Direct); Common Stock — 559,232 shares (Direct); Common Stock — 53,412,414 shares (Indirect, By Apeiron Investment Group Ltd.); Common Stock — 1,799,302 shares (Indirect, By Apeiron Presight Capital Fund II, L.P.)

Footnotes (3)

1. F1. Represents shares acquired upon exercise of options and held by the Reporting Person.
2. F2. The stock option is fully vested and exercisable.
3. F3. The stock option vested with respect to 25% of the shares on January 5, 2025, and will vest with respect to the remaining shares in 36 monthly installments thereafter.

Key Figures

Options exercised: 559,232 shares Exercise price 1: $1.34 per share Exercise price 2: $1.64 per share +4 more

7 metrics

Options exercised 559,232 shares Total ATAI common shares acquired via option exercises on April 8, 2026

Exercise price 1 $1.34 per share Strike price for 103,000 ATAI options exercised

Exercise price 2 $1.64 per share Strike price for 410,162 ATAI options exercised

Exercise price 3 $1.88 per share Strike price for 46,070 ATAI options exercised

Direct holdings after transactions 559,232 shares ATAI common stock directly owned by Angermayer after exercises

Indirect holdings via Apeiron Presight Capital Fund II, L.P. 1,799,302 shares ATAI common stock reported as indirectly owned

Indirect holdings via Apeiron Investment Group Ltd. 53,412,414 shares ATAI common stock reported as indirectly owned

Key Terms

Stock Option, Exercise or conversion of derivative security, ten percent owner, indirect ownership

4 terms

Stock Option financial

"security_title: "Stock Option" for derivative transactions exercised into common stock"

A stock option is a contract that gives you the right to buy or sell a company's stock at a specific price within a certain time frame. People use them to potentially make money if the stock's price moves favorably or to protect against losses. It's like holding a coupon that can be used to buy or sell stock at a set price later on.

Exercise or conversion of derivative security financial

"transaction_code_description: "Exercise or conversion of derivative security""

ten percent owner financial

"reportingPersons entry flags Angermayer and Apeiron Investment Group Ltd. as ten percent owners"

indirect ownership financial

"ownership_type: "indirect" for holdings by Apeiron Presight Capital Fund II, L.P. and Apeiron Investment Group Ltd."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Christian Angermayer do in this ATAI Form 4 filing?

Christian Angermayer exercised stock options to acquire 559,232 shares of AtaiBeckley Inc. common stock. These transactions were reported as option exercises, not open-market purchases or sales, and increased his directly held ATAI share position.

At what prices were the ATAI stock options exercised by Angermayer?

Angermayer exercised ATAI stock options at $1.34, $1.64, and $1.88 per share. These exercise prices reflect the agreed strike prices on the options contracts, not the prevailing market price on the exercise date.

How many ATAI shares does Christian Angermayer hold directly after the transactions?

After exercising options, Christian Angermayer directly holds 559,232 shares of AtaiBeckley Inc. common stock. This direct ownership figure comes from the post-transaction share balances reported for his non-derivative holdings in the Form 4.

What are the indirect ATAI shareholdings linked to Angermayer?

Indirectly, the filing reports 1,799,302 ATAI shares held by Apeiron Presight Capital Fund II, L.P. and 53,412,414 shares held by Apeiron Investment Group Ltd. These positions are attributed as indirect ownership associated with Angermayer.

Were any ATAI shares sold in this Form 4 for Christian Angermayer?

No sales are reported; the Form 4 only shows option exercises that acquired ATAI common shares. The transaction code is “M,” which indicates exercise or conversion of derivative securities rather than open-market buying or selling.

How many ATAI options did Angermayer exercise in total?

Across the reported transactions, Angermayer exercised options covering 559,232 ATAI shares. This total reflects three separate stock option grants that were converted into common stock on the same reported transaction date.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 04/10/2026 - 06:00 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Angermayer Christian

(Last) (First) (Middle)

66 & 67, BEATRICE, AMERY STREET

(Street)

SLIEMA SLM1707

(City) (State) (Zip)

MALTA

(Country)

2. Issuer Name and Ticker or Trading Symbol
AtaiBeckley Inc. [ ATAI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/08/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	04/08/2026		M		46,070(1)	A	$1.88	46,070	D
Common Stock	04/08/2026		M		410,162(1)	A	$1.64	456,232	D
Common Stock	04/08/2026		M		103,000(1)	A	$1.34	559,232	D
Common Stock								53,412,414	I	By Apeiron Investment Group Ltd.
Common Stock								1,799,302	I	By Apeiron Presight Capital Fund II, L.P.

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option	$1.88	04/08/2026		M			46,070	(2)	05/23/2033	Common Stock	46,070	$0	17,930	D
Stock Option	$1.64	04/08/2026		M			410,162	(3)	01/05/2034	Common Stock	410,162	$0	231,838	D
Stock Option	$1.34	04/08/2026		M			103,000	(2)	06/13/2034	Common Stock	103,000	$0	0	D

1. Name and Address of Reporting Person^*

Angermayer Christian

(Last) (First) (Middle)

66 & 67, BEATRICE, AMERY STREET

(Street)

SLIEMA SLM1707

(City) (State) (Zip)

MALTA

(Country)

Relationship of Reporting Person(s) to Issuer

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Apeiron Investment Group Ltd.

(Last) (First) (Middle)

66 & 67 AMERY STREET

(Street)

SILEMA SLM1707

(City) (State) (Zip)

MALTA

(Country)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

Explanation of Responses:

1. Represents shares acquired upon exercise of options and held by the Reporting Person.

2. The stock option is fully vested and exercisable.

3. The stock option vested with respect to 25% of the shares on January 5, 2025, and will vest with respect to the remaining shares in 36 monthly installments thereafter.

	Apeiron Investment Group Ltd. By: /s/ Mario Frendo, Director	04/10/2026
	/s/ Christian Angermayer	04/10/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)