Bambusa Therapeutics CEO Shanshan Xu holds stock options
The reported positions separate Xu's direct option rights from preferred stock held through the Xu Trust and MiNeng.
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Form Type
3
Rhea-AI Filing Summary
Bambusa Therapeutics, Inc. (BBTX) reports ownership positions for co-founder, chief executive officer, president and chairperson Shanshan Xu and 10% owner MiNeng, Inc. Xu holds direct options on 245,181 common shares at $0.3700 and 167,124 at $1.8400, with vesting subject to continued employee status. Preferred stock held through the Xu Trust and MiNeng converts automatically one-for-one to common stock before the IPO. Reported underlying shares by Series Seed Plus, Series Seed and Series A-1 are 4,155, 10,450 and 1,753 for the Trust, and 37,399, 94,050 and 15,789 for MiNeng. Xu may be deemed to share voting and dispositive power over Trust shares.
Insider Trade Summary
Holdings reported, no transactions
Holdings
Insider
Xu Shanshan, MiNeng, Inc.
Role
See remarks | 10% Owner
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Holding | Stock Option (right to buy) F3 | -- | -- | -- |
| Holding | Stock Option (right to buy) F4 | -- | -- | -- |
| Holding | Series Seed Plus Preferred Stock F5, F1 | -- | -- | -- |
| Holding | Series Seed Preferred Stock F5, F1 | -- | -- | -- |
| Holding | Series A-1 Preferred Stock F5, F1 | -- | -- | -- |
| Holding | Series Seed Plus Preferred Stock F5, F2 | -- | -- | -- |
| Holding | Series Seed Preferred Stock F5, F2 | -- | -- | -- |
| Holding | Series A-1 Preferred Stock F5, F2 | -- | -- | -- |
| Holding | Common Stock F1 | -- | -- | -- |
| Holding | Common Stock F2 | -- | -- | -- |
Holdings:
Stock Option (right to buy) — 412,305 contracts (Direct);
Series Seed Plus Preferred Stock — 41,554 contracts (Indirect, See footnote);
Series Seed Preferred Stock — 104,500 contracts (Indirect, See footnote);
Series A-1 Preferred Stock — 17,542 contracts (Indirect, See footnote);
Common Stock — 8,239,199 shares (Indirect, See footnote)
Footnotes (5)
- F1. 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.
- F2. 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.
- F3. Subject to the Reporting Person continuing to be an Employee (as defined in the Issuer's 2024 Stock Plan) through each applicable date, one forty-eighth (1/48th) of the shares subject to the option shall vest each month following the Vesting Commencement Date on the same day of the month as the Vesting Commencement Date (and if there is no corresponding day, on the last day of the month). "Vesting Commencement Date" shall mean May 1, 2024.
- F4. Subject to the Reporting Person continuing to be an Employee (as defined in the Issuer's 2024 Stock Plan) through each applicable date, twenty five percent (25%) of the shares subject to the option shall vest on the one (1) year anniversary of the Vesting Commencement Date, and one forty-eighth (1/48th) of the shares subject to the option shall vest each month thereafter on the same day of the month as the Vesting Commencement Date (and if there is no corresponding day, on the last day of the month). "Vesting Commencement Date" shall mean June 19, 2025.
- F5. All shares of the preferred stock, par value $0.00001 per share, of the Issuer will automatically be 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.
Key Figures
First direct stock option: 245,181 underlying common shares; $0.3700 exercise price
Second direct stock option: 167,124 underlying common shares; $1.8400 exercise price
Xu Trust preferred holdings: 4,155 Series Seed Plus; 10,450 Series Seed; 1,753 Series A-1 underlying common shares
+2 more
5 metrics
First direct stock option
245,181 underlying common shares; $0.3700 exercise price
Expires December 18, 2029.
Second direct stock option
167,124 underlying common shares; $1.8400 exercise price
Expires August 15, 2035.
Xu Trust preferred holdings
4,155 Series Seed Plus; 10,450 Series Seed; 1,753 Series A-1 underlying common shares
Preferred stock held by The Shanshan Xu 2025 Irrevocable Family Trust.
MiNeng preferred holdings
37,399 Series Seed Plus; 94,050 Series Seed; 15,789 Series A-1 underlying common shares
Preferred stock held by MiNeng, Inc.
Preferred-stock conversion ratio
One-for-one
Preferred stock converts to common stock before the IPO closes.
Key Terms
Vesting Commencement Date, one forty-eighth (1/48th), voting and dispositive power, automatically converted on a one-for-one basis
4 terms
Vesting Commencement Date technical
"Vesting Commencement Date shall mean May 1, 2024."
The vesting commencement date is the starting point when an employee begins earning ownership rights to their promised benefits, such as stock options or retirement contributions. Think of it like the day a savings account is opened—only after this date do the benefits start to grow and become fully available over time. It matters to investors because it marks when the clock begins ticking toward full ownership, affecting the timing and value of these benefits.
one forty-eighth (1/48th) technical
"one forty-eighth (1/48th) of the shares subject to the option shall vest each month"
voting and dispositive power regulatory
"share voting and dispositive power with respect to the shares held by the Xu Trust"
automatically converted on a one-for-one basis technical
"will automatically be converted on a one-for-one basis to shares of the Issuer's common stock"
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What preferred-stock holdings does BBTX report through the Xu Trust and MiNeng?
The Shanshan Xu 2025 Irrevocable Family Trust's preferred-stock holdings correspond to 4,155 Series Seed Plus, 10,450 Series Seed and 1,753 Series A-1 underlying common shares. Xu may be deemed to share voting and dispositive power over the Trust's shares. MiNeng, Inc.'s holdings correspond to 37,399, 94,050 and 15,789 underlying common shares in those classes, respectively; Xu is MiNeng's president and sole stockholder and has sole voting and dispositive power over its shares.
What are the vesting conditions for Shanshan Xu's BBTX options?
Both option schedules are conditioned on Xu continuing to be an Employee under Bambusa Therapeutics' 2024 Stock Plan through each applicable date. For the option with a May 1, 2024 vesting commencement date, one forty-eighth of the shares vests monthly. For the option with a June 19, 2025 commencement date, 25% vests on the one-year anniversary, followed by one forty-eighth monthly thereafter.
AI-generated analysis. How Rhea-AI works. Not financial advice.
