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Citadel discloses 9.99% BriaCell (BCTX) stake in Schedule 13G

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
SCHEDULE 13G

Rhea-AI Filing Summary

BriaCell Therapeutics Corp. (BCTX) received a Schedule 13G filing from a group of Citadel-affiliated entities and Kenneth Griffin, disclosing a sizable passive stake in the company’s common shares.

The group reports beneficial ownership of 717,198 Shares, which represents 9.99% of BriaCell’s outstanding common shares. Within this, Citadel Advisors LLC, Citadel Advisors Holdings LP, and Citadel GP LLC may each be deemed to beneficially own 716,699 Shares (9.98% of the class), while Citadel Securities LLC and related entities may be deemed to beneficially own 499 Shares (0.0% of the class).

The reported percentages are based on 7,179,163 Shares outstanding, including 6,211,436 Shares outstanding as of January 15, 2026, 657,096 Shares issued upon voluntary warrant exercises by Citadel affiliates, and 310,631 Shares issuable upon conversion of warrants that are subject to a 9.99% beneficial ownership limitation.

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Insights

Citadel-linked entities disclose a near-10% passive stake in BriaCell.

The filing shows a group of Citadel-affiliated entities and Kenneth Griffin collectively may be deemed to beneficially own 717,198 BriaCell Shares, or 9.99% of the company’s common shares. The ownership is reported on a Schedule 13G, which is used for passive stakes, and the certification states the securities were not acquired to change or influence control.

The percentage is calculated over 7,179,163 Shares outstanding, combining Shares outstanding as of January 15, 2026, Shares issued from voluntary warrant exercises by Citadel affiliates, and Shares issuable upon conversion of certain warrants. Those warrants are subject to terms that limit exercise if doing so would push beneficial ownership above 9.99%, effectively capping the stake.

This structure means Citadel-related entities have a meaningful, but constrained, exposure to BriaCell’s equity. Future changes in this position, if material, would be expected to appear in subsequent beneficial ownership reports and related company disclosures.






Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)






SCHEDULE 13G




Comment for Type of Reporting Person: The percentages reported in this Schedule 13G are based upon 7,179,163 Shares outstanding comprised of (i) 6,211,436 Shares outstanding as of January 15, 2026 (according to the issuer's prospectus as filed with the Securities and Exchange Commission on January 14, 2026), (ii) 657,096 Shares issued to affiliates of the reporting persons upon the voluntary exercise of certain warrants held by affiliates of the reporting persons prior to the date hereof, and (iii) 310,631 Shares issuable upon conversion of certain warrants held by affiliates of the reporting persons. The warrants described in clause (iii) are subject to terms that limit exercise, if, after such exercise, the holder and its affiliates would beneficially own more than 9.99% of the number of the Shares outstanding immediately after exercise. Except as described in the preceding sentence, all Shares for the holdings of the reporting persons reported in this Schedule 13G are as of the opening of the market on January 23, 2026.


SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G



Citadel Advisors LLC
Signature:/s/ Seth Levy
Name/Title:Seth Levy, Authorized Signatory
Date:01/23/2026
Citadel Advisors Holdings LP
Signature:/s/ Seth Levy
Name/Title:Seth Levy, Authorized Signatory
Date:01/23/2026
Citadel GP LLC
Signature:/s/ Seth Levy
Name/Title:Seth Levy, Authorized Signatory
Date:01/23/2026
Citadel Securities LLC
Signature:/s/ Seth Levy
Name/Title:Seth Levy, Authorized Signatory
Date:01/23/2026
Citadel Securities Group LP
Signature:/s/ Seth Levy
Name/Title:Seth Levy, Authorized Signatory
Date:01/23/2026
Citadel Securities GP LLC
Signature:/s/ Seth Levy
Name/Title:Seth Levy, Authorized Signatory
Date:01/23/2026
Kenneth Griffin
Signature:/s/ Seth Levy
Name/Title:Seth Levy, attorney-in-fact*
Date:01/23/2026

Comments accompanying signature: * Seth Levy is signing on behalf of Kenneth Griffin as attorney-in-fact pursuant to a power of attorney previously filed with the Securities and Exchange Commission, and hereby incorporated by reference herein. The power of attorney was filed as an attachment to a filing by Citadel Advisors LLC on Schedule 13G for Allakos Inc. on October 13, 2023.
Exhibit Information

Exhibit 99.1 - Joint Filing Agreement

FAQ

What stake in BriaCell Therapeutics Corp. (BCTX) did Citadel-related entities report?

The Citadel-affiliated reporting persons and Kenneth Griffin disclosed that Mr. Griffin may be deemed to beneficially own 717,198 common Shares of BriaCell, representing 9.99% of the company’s outstanding common shares.

How many BriaCell (BCTX) Shares are used to calculate Citadel’s ownership percentage?

The reported percentages are based on 7,179,163 Shares outstanding, consisting of 6,211,436 Shares outstanding as of January 15, 2026, 657,096 Shares issued to Citadel affiliates upon voluntary warrant exercises, and 310,631 Shares issuable upon conversion of certain warrants.

Which Citadel entities filed the Schedule 13G for BriaCell (BCTX)?

The Schedule 13G is jointly filed by Citadel Advisors LLC, Citadel Advisors Holdings LP, Citadel GP LLC, Citadel Securities LLC, Citadel Securities Group LP, Citadel Securities GP LLC, and Kenneth Griffin as the reporting persons.

What percentage of BriaCell (BCTX) does Citadel Advisors LLC report beneficially owning?

Each of Citadel Advisors LLC, Citadel Advisors Holdings LP, and Citadel GP LLC may be deemed to beneficially own 716,699 Shares, which represents 9.98% of BriaCell’s outstanding common shares.

Are any BriaCell (BCTX) warrants included in the Citadel ownership calculation?

Yes. The calculation includes 657,096 Shares issued upon voluntary exercise of warrants held by Citadel affiliates and 310,631 Shares issuable upon conversion of certain warrants that are subject to a 9.99% beneficial ownership limitation.

Is Citadel’s BriaCell (BCTX) stake reported as a passive investment?

Yes. The Schedule 13G certification states that the securities were not acquired and are not held for the purpose or effect of changing or influencing control of BriaCell and are not held in connection with any such transaction, other than activities solely in connection with a nomination under Rule 14a-11.

Who signed the BriaCell (BCTX) Schedule 13G on behalf of the Citadel entities and Kenneth Griffin?

The filing is signed by Seth Levy as Authorized Signatory for the Citadel entities and as attorney-in-fact for Kenneth Griffin pursuant to a previously filed power of attorney.
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