STOCK TITAN

Angermayer (ATAI) exercises 559K options, adds to large shareholdings

Filing Impact
(Very High)
Filing Sentiment
(Neutral)
Form Type
4

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.

Positive

  • None.

Negative

  • None.
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 --
Exercise Stock Option 410,162 $0.00 --
Exercise Stock Option 103,000 $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 — 17,930 shares (Direct, null); Common Stock — 46,070 shares (Direct, null); Common Stock — 53,412,414 shares (Indirect, By Apeiron Investment Group Ltd.)
Footnotes (1)
  1. Represents shares acquired upon exercise of options and held by the Reporting Person. The stock option is fully vested and exercisable. 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.
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
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."
SEC Form 4
FORM 4UNITED 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)
SLIEMASLM1707

(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)
XDirectorX10% 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
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock04/08/2026M46,070(1)A$1.8846,070D
Common Stock04/08/2026M410,162(1)A$1.64456,232D
Common Stock04/08/2026M103,000(1)A$1.34559,232D
Common Stock53,412,414IBy Apeiron Investment Group Ltd.
Common Stock1,799,302IBy 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option$1.8804/08/2026M46,070 (2)05/23/2033Common Stock46,070$017,930D
Stock Option$1.6404/08/2026M410,162 (3)01/05/2034Common Stock410,162$0231,838D
Stock Option$1.3404/08/2026M103,000 (2)06/13/2034Common Stock103,000$00D
1. Name and Address of Reporting Person*
Angermayer Christian

(Last)(First)(Middle)
66 & 67, BEATRICE, AMERY STREET

(Street)
SLIEMASLM1707

(City)(State)(Zip)

MALTA

(Country)

Relationship of Reporting Person(s) to Issuer
XDirectorX10% 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)
SILEMASLM1707

(City)(State)(Zip)

MALTA

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% 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, Director04/10/2026
/s/ Christian Angermayer04/10/2026
** Signature of Reporting PersonDate
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)

FAQ

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.