Shanshan Xu reports a conversion at Bambusa Therapeutics

By AlphaYouPublished Nov 2, 2026Form 4

Stocks in this disclosure

Reported activity

Xu Shanshan; MiNeng, Inc.

Reporting filer

Shanshan Xu reports a conversion, not an open-market purchase or sale, in Bambusa Therapeutics, Inc.. Form 4 filed Nov 2, 2026 lists 8 entries.

Disclosed: Nov 2, 2026

Reported details

8 entries

All validated entries in this disclosure
Security	Owner	Date	Code	Action	Quantity	Price	Following holdings	Filed terms and references
Common Stock	Xu Shanshan; MiNeng, Inc.	2026-11-02	C	Conversion	16358	Not stated (see footnotes)	840,277	Filed terms security Title: Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 16358 id: F1 transaction Acquired Disposed Code: A shares Owned Following Transaction: 840277 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F2
Common Stock	Xu Shanshan; MiNeng, Inc.	2026-11-02	C	Conversion	147238	Not stated (see footnotes)	7,562,518	Filed terms security Title: Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 147238 id: F1 transaction Acquired Disposed Code: A shares Owned Following Transaction: 7562518 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F3
Series Seed Plus Preferred Stock (derivative)	Xu Shanshan; MiNeng, Inc.	2026-11-02	C	Conversion	4155	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: 4155 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 4155 shares Owned Following Transaction: 0 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F2
Series Seed Preferred Stock (derivative)	Xu Shanshan; MiNeng, Inc.	2026-11-02	C	Conversion	10450	0	0	Filed terms security Title: Series Seed Preferred Stock id: F1 transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 10450 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 10450 shares Owned Following Transaction: 0 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F1
Series A-1 Preferred Stock (derivative)	Xu Shanshan; MiNeng, Inc.	2026-11-02	C	Conversion	1753	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: 1753 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 1753 shares Owned Following Transaction: 0 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F2
Series Seed Plus Preferred Stock (derivative)	Xu Shanshan; MiNeng, Inc.	2026-11-02	C	Conversion	37399	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: 37399 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 37399 shares Owned Following Transaction: 0 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F3
Series Seed Preferred Stock (derivative)	Xu Shanshan; MiNeng, Inc.	2026-11-02	C	Conversion	94050	0	0	Filed terms security Title: Series Seed Preferred Stock id: F1 transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: C equity Swap Involved: 0 transaction Shares: 94050 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 94050 shares Owned Following Transaction: 0 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F3
Series A-1 Preferred Stock (derivative)	Xu Shanshan; MiNeng, Inc.	2026-11-02	C	Conversion	15789	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: 15789 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 15789 shares Owned Following Transaction: 0 direct Or Indirect Ownership: I nature Of Ownership: See footnote id: F3

Common Stock

Owner: Xu Shanshan; MiNeng, Inc.
Date: 2026-11-02
Code: C
Action: Conversion
Quantity: 16358
Price: Not stated (see footnotes)
Following holdings: 840,277
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: 16358
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 840277
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F2

Common Stock

Owner: Xu Shanshan; MiNeng, Inc.
Date: 2026-11-02
Code: C
Action: Conversion
Quantity: 147238
Price: Not stated (see footnotes)
Following holdings: 7,562,518
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: 147238
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 7562518
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Series Seed Plus Preferred Stock (derivative)

Owner: Xu Shanshan; MiNeng, Inc.
Date: 2026-11-02
Code: C
Action: Conversion
Quantity: 4155
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: 4155
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 4155
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F2

Series Seed Preferred Stock (derivative)

Owner: Xu Shanshan; MiNeng, Inc.
Date: 2026-11-02
Code: C
Action: Conversion
Quantity: 10450
Price: 0
Following holdings: 0
Reporting delay: 0 days
Filed terms and references: Filed terms
security Title: Series Seed Preferred Stock
id: F1
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 10450
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 10450
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F1

Series A-1 Preferred Stock (derivative)

Owner: Xu Shanshan; MiNeng, Inc.
Date: 2026-11-02
Code: C
Action: Conversion
Quantity: 1753
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: 1753
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 1753
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F2

Series Seed Plus Preferred Stock (derivative)

Owner: Xu Shanshan; MiNeng, Inc.
Date: 2026-11-02
Code: C
Action: Conversion
Quantity: 37399
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: 37399
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 37399
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Series Seed Preferred Stock (derivative)

Owner: Xu Shanshan; MiNeng, Inc.
Date: 2026-11-02
Code: C
Action: Conversion
Quantity: 94050
Price: 0
Following holdings: 0
Reporting delay: 0 days
Filed terms and references: Filed terms
security Title: Series Seed Preferred Stock
id: F1
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 94050
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 94050
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Series A-1 Preferred Stock (derivative)

Owner: Xu Shanshan; MiNeng, Inc.
Date: 2026-11-02
Code: C
Action: Conversion
Quantity: 15789
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: 15789
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 15789
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

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.
Xu Shanshan: See remarks, Director, 10% owner.
MiNeng, Inc.: 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.
F2: Shares held by The Shanshan Xu 2025 Irrevocable Family Trust ("Xu Trust"). The Reporting Person may be deemed to share voting and dispositive power with respect to the shares held by the Xu Trust.
F3: Shares held by MiNeng, Inc. ("MiNeng"). The Reporting Person is the President and sole stockholder of MiNeng and therefore has sole voting and dispositive power with regard to the shares held by MiNeng.

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

Xu Shanshan; MiNeng, Inc.

2026-11-02

Conversion

16358

Not stated (see footnotes)

840,277

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: 16358
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 840277
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F2

Common Stock

Xu Shanshan; MiNeng, Inc.

2026-11-02

Conversion

147238

Not stated (see footnotes)

7,562,518

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: 147238
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 7562518
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Series Seed Plus Preferred Stock (derivative)

Xu Shanshan; MiNeng, Inc.

2026-11-02

Conversion

4155

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: 4155
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 4155
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F2

Series Seed Preferred Stock (derivative)

Xu Shanshan; MiNeng, Inc.

2026-11-02

Conversion

10450

0 days

Filed terms

security Title: Series Seed Preferred Stock
id: F1
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 10450
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 10450
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F1

Series A-1 Preferred Stock (derivative)

Xu Shanshan; MiNeng, Inc.

2026-11-02

Conversion

1753

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: 1753
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 1753
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F2

Series Seed Plus Preferred Stock (derivative)

Xu Shanshan; MiNeng, Inc.

2026-11-02

Conversion

37399

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: 37399
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 37399
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Series Seed Preferred Stock (derivative)

Xu Shanshan; MiNeng, Inc.

2026-11-02

Conversion

94050

0 days

Filed terms

security Title: Series Seed Preferred Stock
id: F1
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: C
equity Swap Involved: 0
transaction Shares: 94050
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 94050
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Series A-1 Preferred Stock (derivative)

Xu Shanshan; MiNeng, Inc.

2026-11-02

Conversion

15789

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: 15789
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 15789
shares Owned Following Transaction: 0
direct Or Indirect Ownership: I
nature Of Ownership: See footnote
id: F3

Filing context

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

Xu Shanshan: See remarks, Director, 10% owner.

MiNeng, Inc.: 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.

F2: Shares held by The Shanshan Xu 2025 Irrevocable Family Trust ("Xu Trust"). The Reporting Person may be deemed to share voting and dispositive power with respect to the shares held by the Xu Trust.

F3: Shares held by MiNeng, Inc. ("MiNeng"). The Reporting Person is the President and sole stockholder of MiNeng and therefore has sole voting and dispositive power with regard to the shares held by MiNeng.