Tsao David
Director · Officer · BLLN
As of 2026-09-16, Tsao David has 60 Form 4 transactions on record across 1 company — 60 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Reconstructed holdings
- Direct $58.0M
- Indirect $0
| BLLN | direct | 560,000 sh | $58.0M |
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-09 | BLLN | Sale | 10,000 @ $100.00 | $1.0M | −90.9% of holding | 1,000 | Form 4 |
| 2026-09-09 | BLLN | Sale | 10,000 @ $97.54 | $975K | −47.6% of holding | 11,000 | Form 4 |
| 2026-08-25 | BLLN | Sale | 10,000 @ $100.00 | $1.0M | −90.9% of holding | 1,000 | Form 4 |
| 2026-08-10 | BLLN | Sale | 10,000 @ $92.86 | $929K | −90.9% of holding | 1,000 | Form 4 |
| 2026-07-13 | BLLN | Sale | 3,835 @ $125.76 | $482K | −65.4% of holding | 2,028 | Form 4 |
| 2026-07-13 | BLLN | Sale | 3,185 @ $125.85 | $401K | −21.2% of holding | 11,821 | Form 4 |
| 2026-07-13 | BLLN | Sale | 2,477 @ $123.84 | $307K | −12.4% of holding | 17,421 | Form 4 |
| 2026-07-13 | BLLN | Sale | 2,415 @ $124.90 | $302K | −13.9% of holding | 15,006 | Form 4 |
| 2026-07-13 | BLLN | Sale | 2,274 @ $123.71 | $281K | −23.1% of holding | 7,588 | Form 4 |
| 2026-07-13 | BLLN | Sale | 1,725 @ $124.65 | $215K | −22.7% of holding | 5,863 | Form 4 |
| 2026-07-13 | BLLN | Sale | 1,138 @ $122.84 | $140K | −10.3% of holding | 9,862 | Form 4 |
| 2026-07-13 | BLLN | Sale | 1,102 @ $122.90 | $135K | −5.2% of holding | 19,898 | Form 4 |
| 2026-07-13 | BLLN | Sale | 1,028 @ $126.90 | $130K | −50.7% of holding | 1,000 | Form 4 |
| 2026-07-13 | BLLN | Sale | 821 @ $126.89 | $104K | −6.9% of holding | 11,000 | Form 4 |
| 2026-06-15 | BLLN | Sale | 2,978 @ $102.60 | $306K | −42.9% of holding | 3,961 | Form 4 |
| 2026-06-15 | BLLN | Sale | 2,889 @ $103.68 | $300K | −20.5% of holding | 11,230 | Form 4 |
| 2026-06-15 | BLLN | Sale | 2,816 @ $102.77 | $289K | −16.6% of holding | 14,119 | Form 4 |
| 2026-06-15 | BLLN | Sale | 2,461 @ $101.37 | $249K | −26.2% of holding | 6,939 | Form 4 |
| 2026-06-15 | BLLN | Sale | 2,398 @ $103.63 | $249K | −60.5% of holding | 1,563 | Form 4 |
| 2026-06-15 | BLLN | Sale | 2,361 @ $101.55 | $240K | −12.2% of holding | 16,935 | Form 4 |
| 2026-06-15 | BLLN | Sale | 1,704 @ $100.37 | $171K | −8.1% of holding | 19,296 | Form 4 |
| 2026-06-15 | BLLN | Sale | 1,000 @ $100.05 | $100K | −9.6% of holding | 9,400 | Form 4 |
| 2026-06-15 | BLLN | Sale | 600 @ $98.74 | $59K | −5.5% of holding | 10,400 | Form 4 |
| 2026-06-15 | BLLN | Sale | 563 @ $104.32 | $59K | −36.0% of holding | 1,000 | Form 4 |
| 2026-06-15 | BLLN | Sale | 230 @ $104.47 | $24K | −2.0% of holding | 11,000 | Form 4 |
| 2025-11-07 | BLLN | Purchase | 1,000 @ $60.00 | $60K | ownership Δ n/a | 1,000 | Form 4 |
34 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-09-09 | BLLN | Option exercise | 10,000 | 560,000 | Form 4 |
| 2026-09-09 | BLLN | Option exercise | 10,000 | 570,000 | Form 4 |
| 2026-09-09 | BLLN | Option exercise | 10,000 | 21,000 | Form 4 |
| 2026-09-09 | BLLN | Option exercise | 10,000 | 11,000 | Form 4 |
| 2026-09-08 | BLLN | Gift | 20,000 | 1,000 | Form 4 |
| 2026-09-03 | BLLN | Conversion | 20,000 | 2,305,108 | Form 4 |
| 2026-09-03 | BLLN | Conversion | 20,000 | 21,000 | Form 4 |
| 2026-08-25 | BLLN | Option exercise | 10,000 | 580,000 | Form 4 |
| 2026-08-25 | BLLN | Option exercise | 10,000 | 11,000 | Form 4 |
| 2026-08-10 | BLLN | Option exercise | 10,000 | 590,000 | Form 4 |
| 2026-08-10 | BLLN | Option exercise | 10,000 | 11,000 | Form 4 |
| 2026-07-13 | BLLN | Option exercise | 10,000 | 600,000 | Form 4 |
| 2026-07-13 | BLLN | Option exercise | 10,000 | 11,000 | Form 4 |
| 2026-07-13 | BLLN | Option exercise | 10,000 | 21,000 | Form 4 |
| 2026-07-13 | BLLN | Option exercise | 10,000 | 610,000 | Form 4 |
| 2026-06-15 | BLLN | Option exercise | 10,000 | 21,000 | Form 4 |
| 2026-06-15 | BLLN | Option exercise | 10,000 | 11,000 | Form 4 |
| 2026-06-15 | BLLN | Option exercise | 10,000 | 620,000 | Form 4 |
| 2026-06-15 | BLLN | Option exercise | 10,000 | 630,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 2,325,108 | 2,325,108 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 2,325,108 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 501,551 | 501,551 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 640,000 | 640,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 640,000 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 2,325,108 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 2,325,108 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 501,551 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 2,325,108 | 2,325,108 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 501,551 | 501,551 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 501,551 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 640,000 | 640,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 640,000 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 2,325,108 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 2,325,108 | 2,325,108 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.