TSAO DAVID (Chief Technology Officer) sold 76.9% of their position (3.33K shares) of BILLIONTOONE, INC. on the open market
Open‑market sale worth $416.6K — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 9/28/2026ACC: 0002087127-26-000013
DirectorOfficer· Chief Technology Officer
Since Nov 2025
-3.33K
Net shares
Net seller
$416.6K
Total sold
1
Open market trades
0B · 1S
3
Total transactions
3.33K acquired · 6.67K disposed
Non-Derivative Transactions2
Class A Common Stock
Direct
Shares
+3.33K
Price / share
$2.80
Trade value
$9.33K
% of position
333.3%
9/24/2026
1K→4.33K
Class A Common Stock
Direct
Shares
−3.33K
Price / share
$125.00
Trade value
$416.63K
% of position
76.9%
9/24/2026
4.33K→1K
Total
Net shares
+0.00
Net value
-$407.29K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Class A Common Stock Direct | 9/24/2026 | M · Option Exercise | +3.33K | $2.80 | $9.33K | 333.3% | 1K | 4.33K |
| Class A Common Stock Direct | 9/24/2026 | S · Sale | −3.33K | $125.00 | $416.63K | 76.9% | 4.33K | 1K |
| Total | +0.00 | -$407.29K | ||||||
Derivative Transactions1
Stock Option (right to buy)
Direct
Converts to
Class A Common Stock
3.33K shares
Shares
−3.33K
Strike price
2.80
Held after
556.67K
Exercisable
—
9/24/2026
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Stock Option (right to buy) Direct | Class A Common Stock3.33K shares | 9/24/2026 | M · Option Exercise | −3.33K | 2.80 | — | 556.67K |