Salvia Investment GmbH bought $6.0M of BBTX stock

By AlphaYouPublished Nov 2, 2026Form 4

Stocks in this disclosure

Reported activity

Salvia Investment GmbH

Reporting filer

Salvia Investment GmbH reported buying 375,000 shares of Bambusa Therapeutics, Inc. for about $6.0M ($16.00 a share on average). Form 4 filed Nov 2, 2026 lists 5 entries.

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Disclosed: Nov 2, 2026

Reported details

5 entries

All validated entries in this disclosure
Security	Owner	Date	Code	Action	Quantity	Price	Following holdings	Filed terms and references
Common Stock	Salvia Investment GmbH	2026-11-02	C	Conversion	4769701	Not stated (see footnotes)	8,889,301	Filed terms security Title: Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 4769701 id: F1 transaction Acquired Disposed Code: A shares Owned Following Transaction: 8889301 direct Or Indirect Ownership: D nature Of Ownership:
Common Stock	Salvia Investment GmbH	2026-11-02	P	Purchase	375000	16	9,264,301	Filed terms security Title: Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: P equity Swap Involved: 0 transaction Shares: 375000 transaction Price Per Share: 16 transaction Acquired Disposed Code: A shares Owned Following Transaction: 9264301 direct Or Indirect Ownership: D nature Of Ownership:
Series Seed Plus Preferred Stock (derivative)	Salvia Investment GmbH	2026-11-02	C	Conversion	3135066	0	0	Filed terms security Title: Series Seed Plus Preferred Stock id: F1 transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 3135066 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 3135066 shares Owned Following Transaction: 0 direct Or Indirect Ownership: D nature Of Ownership:
Series A-1 Preferred Stock (derivative)	Salvia Investment GmbH	2026-11-02	C	Conversion	1473775	0	0	Filed terms security Title: Series A-1 Preferred Stock id: F1 transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 1473775 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 1473775 shares Owned Following Transaction: 0 direct Or Indirect Ownership: D nature Of Ownership:
Series A-2 Preferred Stock (derivative)	Salvia Investment GmbH	2026-11-02	C	Conversion	160860	0	0	Filed terms security Title: Series A-2 Preferred Stock id: F1 transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 160860 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 160860 shares Owned Following Transaction: 0 direct Or Indirect Ownership: D nature Of Ownership:

Common Stock

Owner: Salvia Investment GmbH
Date: 2026-11-02
Code: C
Action: Conversion
Quantity: 4769701
Price: Not stated (see footnotes)
Following holdings: 8,889,301
Reporting delay: 0 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 4769701
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 8889301
direct Or Indirect Ownership: D
nature Of Ownership:

Common Stock

Owner: Salvia Investment GmbH
Date: 2026-11-02
Code: P
Action: Purchase
Quantity: 375000
Price: 16
Following holdings: 9,264,301
Reporting delay: 0 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: P
equity Swap Involved: 0
transaction Shares: 375000
transaction Price Per Share: 16
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 9264301
direct Or Indirect Ownership: D
nature Of Ownership:

Series Seed Plus Preferred Stock (derivative)

Owner: Salvia Investment GmbH
Date: 2026-11-02
Code: C
Action: Conversion
Quantity: 3135066
Price: 0
Following holdings: 0
Reporting delay: 0 days
Filed terms and references: Filed terms
security Title: Series Seed Plus Preferred Stock
id: F1
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 3135066
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 3135066
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D
nature Of Ownership:

Series A-1 Preferred Stock (derivative)

Owner: Salvia Investment GmbH
Date: 2026-11-02
Code: C
Action: Conversion
Quantity: 1473775
Price: 0
Following holdings: 0
Reporting delay: 0 days
Filed terms and references: Filed terms
security Title: Series A-1 Preferred Stock
id: F1
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 1473775
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 1473775
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D
nature Of Ownership:

Series A-2 Preferred Stock (derivative)

Owner: Salvia Investment GmbH
Date: 2026-11-02
Code: C
Action: Conversion
Quantity: 160860
Price: 0
Following holdings: 0
Reporting delay: 0 days
Filed terms and references: Filed terms
security Title: Series A-2 Preferred Stock
id: F1
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 160860
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 160860
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D
nature Of Ownership:

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.
Salvia Investment GmbH: 10% owner.
F1: All shares of the preferred stock, par value $0.00001 per share, of the Issuer automatically converted on a one-for-one basis to shares of the Issuer's common stock, par value $0.00001 per share ("Common Stock") prior to the closing of the Issuer's initial public offering of its Common Stock.

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

Salvia Investment GmbH

2026-11-02

Conversion

4769701

Not stated (see footnotes)

8,889,301

0 days

Filed terms

security Title: Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 4769701
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 8889301
direct Or Indirect Ownership: D
nature Of Ownership:

Common Stock

Salvia Investment GmbH

2026-11-02

Purchase

375000

9,264,301

0 days

Filed terms

security Title: Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: P
equity Swap Involved: 0
transaction Shares: 375000
transaction Price Per Share: 16
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 9264301
direct Or Indirect Ownership: D
nature Of Ownership:

Series Seed Plus Preferred Stock (derivative)

Salvia Investment GmbH

2026-11-02

Conversion

3135066

0 days

Filed terms

security Title: Series Seed Plus Preferred Stock
id: F1
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 3135066
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 3135066
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D
nature Of Ownership:

Series A-1 Preferred Stock (derivative)

Salvia Investment GmbH

2026-11-02

Conversion

1473775

0 days

Filed terms

security Title: Series A-1 Preferred Stock
id: F1
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 1473775
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 1473775
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D
nature Of Ownership:

Series A-2 Preferred Stock (derivative)

Salvia Investment GmbH

2026-11-02

Conversion

160860

0 days

Filed terms

security Title: Series A-2 Preferred Stock
id: F1
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 160860
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 160860
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D
nature Of Ownership:

Filing context

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

Salvia Investment GmbH: 10% owner.

F1: All shares of the preferred stock, par value $0.00001 per share, of the Issuer automatically converted on a one-for-one basis to shares of the Issuer's common stock, par value $0.00001 per share ("Common Stock") prior to the closing of the Issuer's initial public offering of its Common Stock.