Viking Global (SION) amends Schedule 13G, removes David C. Ott as reporter

Rhea-AI Filing Summary

Viking Global Investors LP amended its Schedule 13G/A to remove David C. Ott as a reporting person effective March 31, 2026. The filing restates beneficial ownership by related Viking entities and individuals: 3,195,181 shares (representing 7.1% of the class) held through affiliated funds and GPs.

The amendment details that 2,039,801 shares are directly owned by Viking Global Opportunities Sub‑entities and 1,155,380 shares by Viking Global Opportunities Drawdown entities, with shared voting and dispositive power across the reported affiliates and two executive committee members.

Insights

Institutional Ownership Specialist

Large passive stake aggregated through affiliated funds; amendment removes one former reporting person.

The filing shows 3,195,181 shares beneficially owned through a set of affiliated entities, representing 7.1% of the outstanding common stock as of March 31, 2026. Ownership is routed via limited partnerships and GPs with shared voting and dispositive power.

Key dependencies include the multi‑entity ownership chain and delegated managerial authority; subsequent disclosures will follow ordinary SEC beneficial‑ownership reporting. Cash‑flow treatment and any sale intentions are not stated in the provided excerpt.

Key Figures

Reported beneficial ownership: 3,195,181 shares VGOP direct holdings: 2,039,801 shares VGOD direct holdings: 1,155,380 shares +3 more

6 metrics

Reported beneficial ownership 3,195,181 shares Aggregate beneficial ownership by Viking entities

VGOP direct holdings 2,039,801 shares Directly owned by Viking Global Opportunities (VGOP)

VGOD direct holdings 1,155,380 shares Directly owned by Viking Global Opportunities Drawdown (VGOD)

Shares outstanding (base) 45,075,651 shares Outstanding as of March 31, 2026 (source: issuer 10‑Q)

Reported stake percentage 7.1% Percent of class for 3,195,181 shares as of March 31, 2026

Sub‑entity stake percent 4.5% / 2.6% Percentages for 2,039,801 and 1,155,380 share positions respectively

Key Terms

Schedule 13G/A, beneficially owned, shared dispositive power, Rule 13d-3

4 terms

Schedule 13G/A regulatory

"Amendment No. 1 ) Sionna Therapeutics, Inc."

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

beneficially owned regulatory

"VGI beneficially owns 3,195,181 shares of Common Stock"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

shared dispositive power regulatory

"Shared Dispositive Power 3,195,181.00"

Rule 13d-3 regulatory

"Based on Rule 13d-3 of the Act, VGI may be deemed to beneficially own"

Rule 13d-3 defines who is treated as the beneficial owner of a company’s shares for U.S. securities disclosure rules — essentially anyone who has the power to vote or direct how shares are voted, or the power to buy or sell them, even if they don’t hold the certificates. For investors this matters because crossing certain ownership thresholds triggers public filing and disclosure obligations and signals potential control or influence, much like having the keys to a car implies you can drive it even if it’s registered to someone else.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 05/15/2026 - 05:48 PM Learn about SEC filing dates

FAQ

What change did Viking Global report for SION in this Schedule 13G/A?

The amendment removes David C. Ott as a reporting person effective March 31, 2026. It otherwise confirms the same aggregated beneficial ownership positions held by Viking entities and two executive committee members, with no new purchases or dispositions disclosed in the excerpt.

How many Sionna Therapeutics (SION) shares does Viking Global beneficially own?

Viking Global beneficially owns 3,195,181 shares, as reported in the filing. That total consists of 2,039,801 shares held by Viking Global Opportunities entities and 1,155,380 shares held by Viking Global Opportunities Drawdown entities, per the Schedule 13G/A text.

What percentage of SION outstanding shares does the filing show for Viking Global?

The filing states the percentages are calculated from 45,075,651 shares outstanding as of March 31, 2026. Viking Global and related reporting persons are reported at 7.1% beneficial ownership, with affiliated sub‑entities shown at 4.5% and 2.6% respectively.

Do the reporting persons directly own the shares or control them through funds?

The Schedule 13G/A states the shares are directly owned by affiliated limited partnerships and funds; reporting persons exercise shared voting and dispositive power through GP and managerial relationships, while the named individuals do not directly own the shares but may be deemed beneficial owners under Rule 13d‑3.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Sionna Therapeutics, Inc.

(Name of Issuer)

Common Stock, $0.001 par value per share

(Title of Class of Securities)

829401108

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

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)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 829401108

1

Names of Reporting Persons

VIKING GLOBAL INVESTORS LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 3,195,181.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 3,195,181.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,195,181.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

7.1 %

12

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person: See Item 4

SCHEDULE 13G

CUSIP Number(s): 829401108

1

Names of Reporting Persons

Viking Global Opportunities Parent GP LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 3,195,181.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 3,195,181.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,195,181.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

7.1 %

12

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person: See Item 4

SCHEDULE 13G

CUSIP Number(s): 829401108

1

Names of Reporting Persons

Viking Global Opportunities GP LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 2,039,801.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,039,801.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,039,801.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.5 %

12

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person: See Item 4

SCHEDULE 13G

CUSIP Number(s): 829401108

1

Names of Reporting Persons

Viking Global Opportunities Portfolio GP LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 2,039,801.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,039,801.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,039,801.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.5 %

12

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person: See Item 4

SCHEDULE 13G

CUSIP Number(s): 829401108

1

Names of Reporting Persons

Viking Global Opportunities Illiquid Investments Sub-Master LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 2,039,801.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,039,801.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,039,801.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.5 %

12

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person: See Item 4

SCHEDULE 13G

CUSIP Number(s): 829401108

1

Names of Reporting Persons

Viking Global Opportunities Drawdown GP LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,155,380.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,155,380.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,155,380.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

2.6 %

12

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person: See Item 4

SCHEDULE 13G

CUSIP Number(s): 829401108

1

Names of Reporting Persons

Viking Global Opportunities Drawdown Portfolio GP LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,155,380.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,155,380.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,155,380.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

2.6 %

12

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person: See Item 4

SCHEDULE 13G

CUSIP Number(s): 829401108

1

Names of Reporting Persons

Viking Global Opportunities Drawdown (Aggregator) LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,155,380.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,155,380.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,155,380.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

2.6 %

12

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person: See Item 4

SCHEDULE 13G

CUSIP Number(s): 829401108

1

Names of Reporting Persons

HALVORSEN OLE ANDREAS

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

NORWAY

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 3,195,181.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 3,195,181.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,195,181.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

7.1 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: See Item 4

SCHEDULE 13G

CUSIP Number(s): 829401108

1

Names of Reporting Persons

Shabet Rose Sharon

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 3,195,181.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 3,195,181.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,195,181.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

7.1 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: See Item 4

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Sionna Therapeutics, Inc.
(b)	Address of issuer's principal executive offices: 21 Hickory Drive, Suite 500, Waltham, Massachusetts, 02451
Item 2.
(a)	Name of person filing: Viking Global Investors LP ("VGI"), Viking Global Opportunities Parent GP LLC ("Opportunities Parent"), Viking Global Opportunities GP LLC ("Opportunities GP"), Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"), Viking Global Opportunities Illiquid Investments Sub-Master LP ("VGOP"), Viking Global Opportunities Drawdown GP LLC ("VGOD GP"), Viking Global Opportunities Drawdown Portfolio GP LLC ("VGOD Portfolio GP"), Viking Global Opportunities Drawdown (Aggregator) LP ("VGOD"), O. Andreas Halvorsen and Rose S. Shabet (collectively, the "Reporting Persons") Effective March 31, 2026, David C. Ott ("Mr. Ott") retired from his roles as Advisory Director of VGI and Executive Committee Member of each of Viking Global Partners LLC (the general partner of VGI) and Opportunities Parent. Accordingly, this Amendment No. 1 is being filed to remove Mr. Ott as a Reporting Person from this Schedule 13G, as Mr. Ott is no longer a beneficial owner of any of the shares of Common Stock reported herein.
(b)	Address or principal business office or, if none, residence: The business address of each of the Reporting Persons is: 600 Washington Boulevard, Floor 11, Stamford, Connecticut 06901.
(c)	Citizenship: VGI is a Delaware limited partnership; Opportunities Parent, Opportunities GP, Opportunities Portfolio GP, VGOD GP and VGOD Portfolio GP are Delaware limited liability companies; VGOP and VGOD are Cayman Islands exempted limited partnerships; O. Andreas Halvorsen is a citizen of Norway; and Rose S. Shabet is a citizen of the United States.
(d)	Title of class of securities: Common Stock, $0.001 par value per share
(e)	CUSIP No.: 829401108
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: VGI: 3,195,181 VGI provides managerial services to VGOP and VGOD. VGI has the authority to dispose of and vote the shares of Common Stock that VGOP and VGOD directly own. VGI does not directly own any shares of Common Stock. Based on Rule 13d-3 of the Act, VGI may be deemed to beneficially own the shares of Common Stock that VGOP and VGOD directly own. VGI beneficially owns 3,195,181 shares of Common Stock consisting of 2,039,801 shares of Common Stock directly owned by VGOP and 1,155,380 shares of Common Stock directly owned by VGOD. Opportunities Parent: 3,195,181 Opportunities Parent is the sole member of Opportunities GP, which has the authority to dispose of and vote the shares of Common Stock controlled by Opportunities Portfolio GP (which consists of the shares of Common Stock that VGOP directly owns), and is the sole member of VGOD GP, which has the authority to dispose of and vote the shares of Common Stock controlled by VGOD Portfolio GP (which consists of the shares of Common Stock that VGOD directly owns). Opportunities Parent does not directly own any shares of Common Stock. Based on Rule 13d-3 of the Act, Opportunities Parent may be deemed to beneficially own the shares of Common Stock that VGOP and VGOD directly own. Opportunities Parent beneficially owns 3,195,181 shares of Common Stock consisting of 2,039,801 shares of Common Stock directly owned by VGOP and 1,155,380 shares of Common Stock directly owned by VGOD. Opportunities GP: 2,039,801 Opportunities GP serves as the sole member of Opportunities Portfolio GP and has the authority to dispose of and vote the shares of Common Stock controlled by Opportunities Portfolio GP, which consists of the shares of Common Stock that VGOP directly owns. In addition, Opportunities GP is the general partner of each of Viking Global Opportunities Intermediate LP, Viking Global Opportunities III LP, and Viking Global Opportunities LP. Opportunities GP does not directly own any shares of Common Stock. Based on Rule 13d-3 of the Act, Opportunities GP may be deemed to beneficially own the shares of Common Stock that VGOP directly owns. Opportunities GP beneficially owns 2,039,801 shares of Common Stock consisting of 2,039,801 shares of Common Stock directly owned by VGOP. Opportunities Portfolio GP: 2,039,801 Opportunities Portfolio GP serves as the general partner of VGOP and has the authority to dispose of and vote the shares of Common Stock that VGOP directly owns. Opportunities Portfolio GP does not directly own any shares of Common Stock. Based on Rule 13d-3 of the Act, Opportunities Portfolio GP may be deemed to beneficially own the shares of Common Stock that VGOP directly owns. Opportunities Portfolio GP beneficially owns 2,039,801 shares of Common Stock consisting of 2,039,801 shares of Common Stock directly owned by VGOP. VGOP: 2,039,801 VGOP has the authority to dispose of and vote the 2,039,801 shares of Common Stock that it directly owns, which power may be exercised by its general partner, Opportunities Portfolio GP, and by VGI, an affiliate of Opportunities Portfolio GP, which provides managerial services to VGOP. Viking Global Opportunities LP (a Delaware limited partnership) and Viking Global Opportunities III LP (a Cayman Islands exempted limited partnership), through its investment in Viking Global Opportunities Intermediate LP (a Cayman Islands exempted limited partnership), invest substantially all of their assets in Viking Global Opportunities Master LP (a Cayman Islands exempted limited partnership), which in turn invests through VGOP. VGOD GP: 1,155,380 VGOD GP serves as the sole member of VGOD Portfolio GP and has the authority to dispose of and vote the shares of Common Stock controlled by VGOD Portfolio GP, which consists of the shares of Common Stock that VGOD directly owns. In addition, VGOD GP is the general partner of each of Viking Global Opportunities Drawdown (Onshore) LP and Viking Global Opportunities Drawdown (Offshore) LP. VGOD GP does not directly own any shares of Common Stock. Based on Rule 13d-3 of the Act, VGOD GP may be deemed to beneficially own the shares of Common Stock that VGOD directly owns. VGOD GP beneficially owns 1,155,380 shares of Common Stock consisting of 1,155,380 shares of Common Stock directly owned by VGOD. VGOD Portfolio GP: 1,155,380 VGOD Portfolio GP serves as the general partner of VGOD and has the authority to dispose of and vote the shares of Common Stock that VGOD directly owns. VGOD Portfolio GP does not directly own any shares of Common Stock. Based on Rule 13d-3 of the Act, VGOD Portfolio GP may be deemed to beneficially own the shares of Common Stock that VGOD directly owns. VGOD Portfolio GP beneficially owns 1,155,380 shares of Common Stock consisting of 1,155,380 shares of Common Stock directly owned by VGOD. VGOD: 1,155,380 VGOD has the authority to dispose of and vote the 1,155,380 shares of Common Stock that it directly owns, which power may be exercised by its general partner, VGOD Portfolio GP, and by VGI, an affiliate of VGOD Portfolio GP, which provides managerial services to VGOD. Viking Global Opportunities Drawdown (Offshore) LP (a Cayman Islands exempted limited partnership) and Viking Global Opportunities Drawdown (Onshore) LP (a Delaware limited partnership) invest substantially all of their assets in VGOD. O. Andreas Halvorsen and Rose S. Shabet: 3,195,181 Mr. Halvorsen and Ms. Shabet, as Executive Committee Members of Viking Global Partners LLC (general partner of VGI) and Opportunities Parent, have shared authority to dispose of and vote the shares of Common Stock beneficially owned by VGI and Opportunities Parent. Neither Mr. Halvorsen nor Ms. Shabet directly owns any shares of Common Stock. Based on Rule 13d-3 of the Act, each may be deemed to beneficially own the shares of Common Stock that VGOP and VGOD directly own. Mr. Halvorsen and Ms. Shabet each beneficially own 3,195,181 shares of Common Stock consisting of 2,039,801 shares of Common Stock directly owned by VGOP and 1,155,380 shares of Common Stock directly owned by VGOD.
(b)	Percent of class: The percentages set forth herein are based on 45,075,651 shares of Common Stock outstanding as of March 31, 2026, as reported in the Issuer's quarterly report on Form 10-Q, filed with the Securities and Exchange Commission (the "Commission") on May 12, 2026. VGI: 7.1% Opportunities Parent: 7.1% Opportunities GP: 4.5% Opportunities Portfolio GP: 4.5% VGOP: 4.5% VGOD GP: 2.6% VGOD Portfolio GP: 2.6% VGOD: 2.6% O. Andreas Halvorsen and Rose S. Shabet: 7.1%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: VGI: 0 Opportunities Parent: 0 Opportunities GP: 0 Opportunities Portfolio GP: 0 VGOP: 0 VGOD GP: 0 VGOD Portfolio GP: 0 VGOD: 0 O. Andreas Halvorsen and Rose S. Shabet: 0
	(ii) Shared power to vote or to direct the vote: VGI: 3,195,181 Opportunities Parent: 3,195,181 Opportunities GP: 2,039,801 Opportunities Portfolio GP: 2,039,801 VGOP: 2,039,801 VGOD GP: 1,155,380 VGOD Portfolio GP: 1,155,380 VGOD: 1,155,380 O. Andreas Halvorsen and Rose S. Shabet: 3,195,181
	(iii) Sole power to dispose or to direct the disposition of: VGI: 0 Opportunities Parent: 0 Opportunities GP: 0 Opportunities Portfolio GP: 0 VGOP: 0 VGOD GP: 0 VGOD Portfolio GP: 0 VGOD: 0 O. Andreas Halvorsen and Rose S. Shabet: 0
	(iv) Shared power to dispose or to direct the disposition of: VGI: 3,195,181 Opportunities Parent: 3,195,181 Opportunities GP: 2,039,801 Opportunities Portfolio GP: 2,039,801 VGOP: 2,039,801 VGOD GP: 1,155,380 VGOD Portfolio GP: 1,155,380 VGOD: 1,155,380 O. Andreas Halvorsen and Rose S. Shabet: 3,195,181
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. The response to Item 4 is incorporated by reference herein.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

VIKING GLOBAL INVESTORS LP

Signature:	/s/ Scott M. Hendler
Name/Title:	Scott M. Hendler on behalf of VIKING GLOBAL INVESTORS LP (1)(2)
Date:	05/15/2026

Viking Global Opportunities Parent GP LLC

Signature:	/s/ Scott M. Hendler
Name/Title:	Scott M. Hendler on behalf of Viking Global Opportunities Parent GP LLC (1)(2)
Date:	05/15/2026

Viking Global Opportunities GP LLC

Signature:	/s/ Scott M. Hendler
Name/Title:	Scott M. Hendler on behalf of Viking Global Opportunities GP LLC (1)(2)
Date:	05/15/2026

Viking Global Opportunities Portfolio GP LLC

Signature:	/s/ Scott M. Hendler
Name/Title:	Scott M. Hendler on behalf of Viking Global Opportunities Portfolio GP LLC (1)(2)
Date:	05/15/2026

Viking Global Opportunities Illiquid Investments Sub-Master LP

Signature:	/s/ Scott M. Hendler
Name/Title:	Scott M. Hendler on behalf of Viking Global Opportunities Illiquid Investments Sub-Master LP (1)(2)
Date:	05/15/2026

Viking Global Opportunities Drawdown GP LLC

Signature:	/s/ Scott M. Hendler
Name/Title:	Scott M. Hendler on behalf of Viking Global Opportunities Drawdown GP LLC (1)(2)
Date:	05/15/2026

Viking Global Opportunities Drawdown Portfolio GP LLC

Signature:	/s/ Scott M. Hendler
Name/Title:	Scott M. Hendler on behalf of Viking Global Opportunities Drawdown Portfolio GP LLC (1)(2)
Date:	05/15/2026

Viking Global Opportunities Drawdown (Aggregator) LP

Signature:	/s/ Scott M. Hendler
Name/Title:	Scott M. Hendler on behalf of Viking Global Opportunities Drawdown (Aggregator) LP (1)(2)
Date:	05/15/2026

HALVORSEN OLE ANDREAS

Signature:	/s/ Scott M. Hendler
Name/Title:	Scott M. Hendler on behalf of O. Andreas Halvorsen (1)
Date:	05/15/2026

Shabet Rose Sharon

Signature:	/s/ Scott M. Hendler
Name/Title:	Scott M. Hendler on behalf of Rose S. Shabet (2)
Date:	05/15/2026

Comments accompanying signature: (1) Scott M. Hendler is signing on behalf of O. Andreas Halvorsen, individually and as an Executive Committee Member of VIKING GLOBAL PARTNERS LLC, on behalf of VIKING GLOBAL INVESTORS LP, and as an Executive Committee Member of VIKING GLOBAL OPPORTUNITIES PARENT GP LLC, on behalf of itself and VIKING GLOBAL OPPORTUNITIES GP LLC, VIKING GLOBAL OPPORTUNITIES PORTFOLIO GP LLC, VIKING GLOBAL OPPORTUNITIES ILLIQUID INVESTMENTS SUB-MASTER LP, VIKING GLOBAL OPPORTUNITIES DRAWDOWN GP LLC, VIKING GLOBAL OPPORTUNITIES DRAWDOWN PORTFOLIO GP LLC and VIKING GLOBAL OPPORTUNITIES DRAWDOWN (AGGREGATOR) LP, pursuant to an authorization and designation letter dated February 9, 2021, which was previously filed with the Commission as an exhibit to a Form 13G filed by Mr. Halvorsen on February 12, 2021 (SEC File No. 005-49737). (2) Scott M. Hendler is signing on behalf of Rose S. Shabet, individually and as an Executive Committee Member of VIKING GLOBAL PARTNERS LLC, on behalf of VIKING GLOBAL INVESTORS LP, and as an Executive Committee Member of VIKING GLOBAL OPPORTUNITIES PARENT GP LLC, on behalf of itself and VIKING GLOBAL OPPORTUNITIES GP LLC, VIKING GLOBAL OPPORTUNITIES PORTFOLIO GP LLC, VIKING GLOBAL OPPORTUNITIES ILLIQUID INVESTMENTS SUB-MASTER LP, VIKING GLOBAL OPPORTUNITIES DRAWDOWN GP LLC, VIKING GLOBAL OPPORTUNITIES DRAWDOWN PORTFOLIO GP LLC and VIKING GLOBAL OPPORTUNITIES DRAWDOWN (AGGREGATOR) LP, pursuant to an authorization and designation letter dated February 9, 2021, which was previously filed with the Commission as an exhibit to a Form 13G filed by Mr. Halvorsen on February 12, 2021 (SEC File No. 005-49737).

Exhibit Information

EXHIBIT A - JOINT FILING AGREEMENT