ETRA: ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC discloses securities transactions

By AlphaYouPublished Sep 23, 2026Form 4

Stocks in this disclosure

Reported activity

ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC

Reporting filer

ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC reported Conversion in Electra Therapeutics, Inc.: 2002310 units of Common Stock, dated 2026-09-21. The full Form 4 contains 10 transaction entries.

Disclosed: Sep 23, 2026

Reported details

10 entries

All validated entries in this disclosure
Security	Owner	Date	Code	Action	Quantity	Price	Following holdings	Reporting delay	Filed terms and references
Common Stock	ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC	2026-09-21	C	Conversion	2002310	Not stated (see footnotes)	2,002,310	2 days	Filed terms security Title: Common Stock transaction Date: 2026-09-21 deemed Execution Date: transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Timeliness: transaction Shares: 2002310 id: F1 transaction Acquired Disposed Code: A shares Owned Following Transaction: 2002310 direct Or Indirect Ownership: I nature Of Ownership: See footnotes id: F3 id: F5
Common Stock	ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC	2026-09-21	C	Conversion	1087934	Not stated (see footnotes)	3,090,244	2 days	Filed terms security Title: Common Stock transaction Date: 2026-09-21 deemed Execution Date: transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Timeliness: transaction Shares: 1087934 id: F1 transaction Acquired Disposed Code: A shares Owned Following Transaction: 3090244 direct Or Indirect Ownership: I nature Of Ownership: See footnotes id: F3 id: F5
Common Stock	ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC	2026-09-21	C	Conversion	1703314	Not stated (see footnotes)	4,793,558	2 days	Filed terms security Title: Common Stock transaction Date: 2026-09-21 deemed Execution Date: transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Timeliness: transaction Shares: 1703314 id: F1 transaction Acquired Disposed Code: A shares Owned Following Transaction: 4793558 direct Or Indirect Ownership: I nature Of Ownership: See footnotes id: F3 id: F5
Common Stock	ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC	2026-09-21	P	Purchase	333333	15.00	5,126,891	2 days	Filed terms security Title: Common Stock transaction Date: 2026-09-21 deemed Execution Date: transaction Form Type: 4 transaction Code: P equity Swap Involved: 0 transaction Timeliness: transaction Shares: 333333 id: F2 transaction Price Per Share: 15.00 transaction Acquired Disposed Code: A shares Owned Following Transaction: 5126891 direct Or Indirect Ownership: I nature Of Ownership: See footnotes id: F3 id: F5
Common Stock	ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC	2026-09-21	C	Conversion	758279	Not stated (see footnotes)	758,279	2 days	Filed terms security Title: Common Stock transaction Date: 2026-09-21 deemed Execution Date: transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Timeliness: transaction Shares: 758279 id: F1 transaction Acquired Disposed Code: A shares Owned Following Transaction: 758279 direct Or Indirect Ownership: I nature Of Ownership: See footnotes id: F4 id: F5
Common Stock	ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC	2026-09-21	P	Purchase	1000000	15.00	1,758,279	2 days	Filed terms security Title: Common Stock transaction Date: 2026-09-21 deemed Execution Date: transaction Form Type: 4 transaction Code: P equity Swap Involved: 0 transaction Timeliness: transaction Shares: 1000000 id: F2 transaction Price Per Share: 15.00 transaction Acquired Disposed Code: A shares Owned Following Transaction: 1758279 direct Or Indirect Ownership: I nature Of Ownership: See footnotes id: F4 id: F5
Series A Convertible Preferred Stock (derivative)	ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC	2026-09-21	C	Conversion	2002310	0	0	2 days	Filed terms security Title: Series A Convertible Preferred Stock id: F1 transaction Date: 2026-09-21 deemed Execution Date: transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Timeliness: transaction Shares: 2002310 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 2002310 shares Owned Following Transaction: 0 direct Or Indirect Ownership: I nature Of Ownership: See footnotes id: F3 id: F5
Series B Convertible Preferred Stock (derivative)	ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC	2026-09-21	C	Conversion	1087934	0	0	2 days	Filed terms security Title: Series B Convertible Preferred Stock id: F1 transaction Date: 2026-09-21 deemed Execution Date: transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Timeliness: transaction Shares: 1087934 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 1087934 shares Owned Following Transaction: 0 direct Or Indirect Ownership: I nature Of Ownership: See footnotes id: F3 id: F5
Series C Convertible Preferred Stock (derivative)	ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC	2026-09-21	C	Conversion	1703314	0	0	2 days	Filed terms security Title: Series C Convertible Preferred Stock id: F1 transaction Date: 2026-09-21 deemed Execution Date: transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Timeliness: transaction Shares: 1703314 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 1703314 shares Owned Following Transaction: 0 direct Or Indirect Ownership: I nature Of Ownership: See footnotes id: F3 id: F5
Series C Convertible Preferred Stock (derivative)	ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC	2026-09-21	C	Conversion	758279	0	0	2 days	Filed terms security Title: Series C Convertible Preferred Stock id: F1 transaction Date: 2026-09-21 deemed Execution Date: transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Timeliness: transaction Shares: 758279 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 758279 shares Owned Following Transaction: 0 direct Or Indirect Ownership: I nature Of Ownership: See footnotes id: F4 id: F5

Common Stock

Owner: ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC
Date: 2026-09-21
Code: C
Action: Conversion
Quantity: 2002310
Price: Not stated (see footnotes)
Following holdings: 2,002,310
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 2002310
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 2002310
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F3
id: F5

Common Stock

Owner: ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC
Date: 2026-09-21
Code: C
Action: Conversion
Quantity: 1087934
Price: Not stated (see footnotes)
Following holdings: 3,090,244
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 1087934
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 3090244
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F3
id: F5

Common Stock

Owner: ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC
Date: 2026-09-21
Code: C
Action: Conversion
Quantity: 1703314
Price: Not stated (see footnotes)
Following holdings: 4,793,558
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 1703314
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 4793558
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F3
id: F5

Common Stock

Owner: ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC
Date: 2026-09-21
Code: P
Action: Purchase
Quantity: 333333
Price: 15.00
Following holdings: 5,126,891
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: P
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 333333
id: F2
transaction Price Per Share: 15.00
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 5126891
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F3
id: F5

Common Stock

Owner: ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC
Date: 2026-09-21
Code: C
Action: Conversion
Quantity: 758279
Price: Not stated (see footnotes)
Following holdings: 758,279
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 758279
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 758279
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F4
id: F5

Common Stock

Owner: ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC
Date: 2026-09-21
Code: P
Action: Purchase
Quantity: 1000000
Price: 15.00
Following holdings: 1,758,279
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: P
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 1000000
id: F2
transaction Price Per Share: 15.00
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 1758279
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F4
id: F5

Series A Convertible Preferred Stock (derivative)

Owner: ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC
Date: 2026-09-21
Code: C
Action: Conversion
Quantity: 2002310
Price: 0
Following holdings: 0
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Series A Convertible Preferred Stock
id: F1
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 2002310
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 2002310
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F3
id: F5

Series B Convertible Preferred Stock (derivative)

Owner: ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC
Date: 2026-09-21
Code: C
Action: Conversion
Quantity: 1087934
Price: 0
Following holdings: 0
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Series B Convertible Preferred Stock
id: F1
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 1087934
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 1087934
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F3
id: F5

Series C Convertible Preferred Stock (derivative)

Owner: ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC
Date: 2026-09-21
Code: C
Action: Conversion
Quantity: 1703314
Price: 0
Following holdings: 0
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Series C Convertible Preferred Stock
id: F1
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 1703314
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 1703314
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F3
id: F5

Series C Convertible Preferred Stock (derivative)

Owner: ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC
Date: 2026-09-21
Code: C
Action: Conversion
Quantity: 758279
Price: 0
Following holdings: 0
Reporting delay: 2 days
Filed terms and references: Filed terms
security Title: Series C Convertible Preferred Stock
id: F1
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 758279
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 758279
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F4
id: F5

Purchases, sales, grants and option exercises are different transactions. The reported code identifies the action; it does not establish a motive.

Filing context

Quantities and prices are shown in the units filed. No trade value is inferred from their product.
ORBIMED ADVISORS LLC: Director, 10% owner.
OrbiMed Capital GP VII LLC: Director, 10% owner.
OrbiMed Genesis GP LLC: Director, 10% owner.
F1: Each share of Series A Convertible Preferred Stock, Series B Convertible Preferred Stock and Series C Convertible Preferred Stock (collectively, the "Preferred Stock") automatically converted into 1 share of Common Stock upon the closing of the Issuer's initial public offering on September 21, 2026 without payment of further consideration. The Preferred Stock has no expiration date.
F2: Reflects shares of the Issuer's Common Stock purchased in the Issuer's initial public offering.
F3: These securities are held directly by OrbiMed Private Investments VII, LP ("OPI VII"). OrbiMed Capital GP VII LLC ("GP VII") is the general partner of OPI VII. OrbiMed Advisors LLC ("OrbiMed Advisors") is the managing member of GP VII. By virtue of such relationships, GP VII and OrbiMed Advisors may be deemed to have voting power and investment power over the securities held by OPI VII and as a result, may be deemed to have beneficial ownership over such securities. OrbiMed Advisors exercises voting and investment power through a management committee comprised of Carl L. Gordon, W. Carter Neild, and Geoffrey C. Hsu, each of whom disclaims beneficial ownership of the shares held by OPI VII.
F4: These securities are held directly by OrbiMed Genesis Master Fund, L.P. ("OrbiMed Genesis"). OrbiMed Genesis GP LLC ("Genesis GP") is the general partner of OrbiMed Genesis. OrbiMed Advisors is the managing member of Genesis GP. By virtue of such relationships, Genesis GP and OrbiMed Advisors may be deemed to have voting power and investment power over the securities held by OrbiMed Genesis and as a result, may be deemed to have beneficial ownership over such securities. OrbiMed Advisors exercises voting and investment power through a management committee comprised of Carl L. Gordon, W. Carter Neild, and Geoffrey C. Hsu, each of whom disclaims beneficial ownership of the shares held by OrbiMed Genesis.
F5: This report on Form 4 is jointly filed by OrbiMed Advisors, GP VII and Genesis GP. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein for purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its pecuniary interest therein, if any. The Reporting Persons have designated Carl L. Gordon, a member of OrbiMed Advisors, to serve on the Issuer's board of directors. This report shall not be deemed an admission that any of such entity or person is a beneficial owner of such securities for purposes of Section 16 of the Exchange Act, or for any other purpose.

Original sources

SEC ownership filing

Prepared automatically from public filing data. Report a correction.

Security

Owner

Date

Code

Action

Quantity

Price

Following holdings

Reporting delay

Filed terms and references

Common Stock

ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC

2026-09-21

Conversion

2002310

Not stated (see footnotes)

2,002,310

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 2002310
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 2002310
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F3
id: F5

Common Stock

ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC

2026-09-21

Conversion

1087934

Not stated (see footnotes)

3,090,244

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 1087934
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 3090244
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F3
id: F5

Common Stock

ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC

2026-09-21

Conversion

1703314

Not stated (see footnotes)

4,793,558

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 1703314
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 4793558
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F3
id: F5

Common Stock

ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC

2026-09-21

Purchase

333333

15.00

5,126,891

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: P
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 333333
id: F2
transaction Price Per Share: 15.00
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 5126891
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F3
id: F5

Common Stock

ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC

2026-09-21

Conversion

758279

Not stated (see footnotes)

758,279

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 758279
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 758279
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F4
id: F5

Common Stock

ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC

2026-09-21

Purchase

1000000

15.00

1,758,279

2 days

Filed terms

security Title: Common Stock
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: P
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 1000000
id: F2
transaction Price Per Share: 15.00
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 1758279
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F4
id: F5

Series A Convertible Preferred Stock (derivative)

ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC

2026-09-21

Conversion

2002310

2 days

Filed terms

security Title: Series A Convertible Preferred Stock
id: F1
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 2002310
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 2002310
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F3
id: F5

Series B Convertible Preferred Stock (derivative)

ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC

2026-09-21

Conversion

1087934

2 days

Filed terms

security Title: Series B Convertible Preferred Stock
id: F1
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 1087934
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 1087934
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F3
id: F5

Series C Convertible Preferred Stock (derivative)

ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC

2026-09-21

Conversion

1703314

2 days

Filed terms

security Title: Series C Convertible Preferred Stock
id: F1
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 1703314
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 1703314
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F3
id: F5

Series C Convertible Preferred Stock (derivative)

ORBIMED ADVISORS LLC; OrbiMed Capital GP VII LLC; OrbiMed Genesis GP LLC

2026-09-21

Conversion

758279

2 days

Filed terms

security Title: Series C Convertible Preferred Stock
id: F1
transaction Date: 2026-09-21
deemed Execution Date:
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Timeliness:
transaction Shares: 758279
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 758279
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnotes
id: F4
id: F5

Filing context

Quantities and prices are shown in the units filed. No trade value is inferred from their product.

ORBIMED ADVISORS LLC: Director, 10% owner.

OrbiMed Capital GP VII LLC: Director, 10% owner.

OrbiMed Genesis GP LLC: Director, 10% owner.

F1: Each share of Series A Convertible Preferred Stock, Series B Convertible Preferred Stock and Series C Convertible Preferred Stock (collectively, the "Preferred Stock") automatically converted into 1 share of Common Stock upon the closing of the Issuer's initial public offering on September 21, 2026 without payment of further consideration. The Preferred Stock has no expiration date.

F2: Reflects shares of the Issuer's Common Stock purchased in the Issuer's initial public offering.

F3: These securities are held directly by OrbiMed Private Investments VII, LP ("OPI VII"). OrbiMed Capital GP VII LLC ("GP VII") is the general partner of OPI VII. OrbiMed Advisors LLC ("OrbiMed Advisors") is the managing member of GP VII. By virtue of such relationships, GP VII and OrbiMed Advisors may be deemed to have voting power and investment power over the securities held by OPI VII and as a result, may be deemed to have beneficial ownership over such securities. OrbiMed Advisors exercises voting and investment power through a management committee comprised of Carl L. Gordon, W. Carter Neild, and Geoffrey C. Hsu, each of whom disclaims beneficial ownership of the shares held by OPI VII.

F4: These securities are held directly by OrbiMed Genesis Master Fund, L.P. ("OrbiMed Genesis"). OrbiMed Genesis GP LLC ("Genesis GP") is the general partner of OrbiMed Genesis. OrbiMed Advisors is the managing member of Genesis GP. By virtue of such relationships, Genesis GP and OrbiMed Advisors may be deemed to have voting power and investment power over the securities held by OrbiMed Genesis and as a result, may be deemed to have beneficial ownership over such securities. OrbiMed Advisors exercises voting and investment power through a management committee comprised of Carl L. Gordon, W. Carter Neild, and Geoffrey C. Hsu, each of whom disclaims beneficial ownership of the shares held by OrbiMed Genesis.

F5: This report on Form 4 is jointly filed by OrbiMed Advisors, GP VII and Genesis GP. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein for purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its pecuniary interest therein, if any. The Reporting Persons have designated Carl L. Gordon, a member of OrbiMed Advisors, to serve on the Issuer's board of directors. This report shall not be deemed an admission that any of such entity or person is a beneficial owner of such securities for purposes of Section 16 of the Exchange Act, or for any other purpose.