David Tsao
Insider
First SEC filing: Nov. 5, 2025 · Latest: June 17, 2026
Insider at
Insider transactions
1 buys (P)
26 sells (S)
Net: $-8,803,625
Avg return of open purchases vs now: 81.8%
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 24, 2026 | BLLN | M 10b5-1 | 3,333 | $2.80 | $9,332 | 4,333 Direct | +333.30% | Acquired | 3795.0% (price as of 2026-10-05) |
| Sept. 24, 2026 | BLLN | S 10b5-1 | 3,333 | $125.00 | $416,625 | 1,000 Direct | -76.92% | Disposed | -12.8% (price as of 2026-10-05) |
| Sept. 24, 2026 | BLLN | M | 3,333 | $2.80 | $9,332 | 556,667 Direct | -0.60% | Disposed | 3795.0% (price as of 2026-10-05) |
| Sept. 9, 2026 | BLLN | M 10b5-1 | 10,000 | $2.80 | $28,000 | 11,000 Direct | +1000.00% | Acquired | 3795.0% (price as of 2026-10-05) |
| Sept. 9, 2026 | BLLN | M 10b5-1 | 10,000 | $2.80 | $28,000 | 21,000 Direct | +90.91% | Acquired | 3795.0% (price as of 2026-10-05) |
| Sept. 9, 2026 | BLLN | S 10b5-1 | 10,000 | $97.54 | $975,400 | 11,000 Direct | -47.62% | Disposed | 11.8% (price as of 2026-10-05) |
| Sept. 9, 2026 | BLLN | S 10b5-1 | 10,000 | $100.00 | $1,000,000 | 1,000 Direct | -90.91% | Disposed | 9.1% (price as of 2026-10-05) |
| Sept. 9, 2026 | BLLN | M | 10,000 | $2.80 | $28,000 | 570,000 Direct | -1.72% | Disposed | 3795.0% (price as of 2026-10-05) |
| Sept. 9, 2026 | BLLN | M | 10,000 | $2.80 | $28,000 | 560,000 Direct | -1.75% | Disposed | 3795.0% (price as of 2026-10-05) |
| Sept. 8, 2026 | BLLN | G | 20,000 | · | · | 1,000 Direct | -95.24% | Disposed | (price as of 2026-10-05) |
| Sept. 3, 2026 | BLLN | C | 20,000 | · | · | 21,000 Direct | +2000.00% | Acquired | (price as of 2026-10-05) |
| Sept. 3, 2026 | BLLN | C | 20,000 | · | · | 2,305,108 Direct | -0.86% | Disposed | (price as of 2026-10-05) |
| Aug. 25, 2026 | BLLN | M 10b5-1 | 10,000 | $2.80 | $28,000 | 11,000 Direct | +1000.00% | Acquired | 3795.0% (price as of 2026-10-05) |
| Aug. 25, 2026 | BLLN | S 10b5-1 | 10,000 | $100.00 | $1,000,000 | 1,000 Direct | -90.91% | Disposed | 9.1% (price as of 2026-10-05) |
| Aug. 25, 2026 | BLLN | M | 10,000 | $2.80 | $28,000 | 580,000 Direct | -1.69% | Disposed | 3795.0% (price as of 2026-10-05) |
| Aug. 10, 2026 | BLLN | M 10b5-1 | 10,000 | $2.80 | $28,000 | 11,000 Direct | +1000.00% | Acquired | 3795.0% (price as of 2026-10-05) |
| Aug. 10, 2026 | BLLN | S 10b5-1 | 10,000 | $92.86 | $928,600 | 1,000 Direct | -90.91% | Disposed | 17.4% (price as of 2026-10-05) |
| Aug. 10, 2026 | BLLN | M | 10,000 | $2.80 | $28,000 | 590,000 Direct | -1.67% | Disposed | 3795.0% (price as of 2026-10-05) |
| July 13, 2026 | BLLN | M | 10,000 | $2.80 | $28,000 | 600,000 Direct | -1.64% | Disposed | 3795.0% (price as of 2026-10-05) |
| July 13, 2026 | BLLN | M | 10,000 | $2.80 | $28,000 | 610,000 Direct | -1.61% | Disposed | 3795.0% (price as of 2026-10-05) |
| July 13, 2026 | BLLN | S 10b5-1 | 1,028 | $126.90 | $130,453 | 1,000 Direct | -50.69% | Disposed | -14.1% (price as of 2026-10-05) |
| July 13, 2026 | BLLN | S 10b5-1 | 3,835 | $125.76 | $482,290 | 2,028 Direct | -65.41% | Disposed | -13.3% (price as of 2026-10-05) |
| July 13, 2026 | BLLN | S 10b5-1 | 1,725 | $124.65 | $215,021 | 5,863 Direct | -22.73% | Disposed | -12.5% (price as of 2026-10-05) |
| July 13, 2026 | BLLN | S 10b5-1 | 2,274 | $123.71 | $281,317 | 7,588 Direct | -23.06% | Disposed | -11.8% (price as of 2026-10-05) |
| July 13, 2026 | BLLN | S 10b5-1 | 1,138 | $122.84 | $139,792 | 9,862 Direct | -10.35% | Disposed | -11.2% (price as of 2026-10-05) |
| July 13, 2026 | BLLN | S 10b5-1 | 821 | $126.89 | $104,177 | 11,000 Direct | -6.95% | Disposed | -14.1% (price as of 2026-10-05) |
| July 13, 2026 | BLLN | S 10b5-1 | 3,185 | $125.85 | $400,832 | 11,821 Direct | -21.22% | Disposed | -13.3% (price as of 2026-10-05) |
| July 13, 2026 | BLLN | S 10b5-1 | 2,415 | $124.90 | $301,634 | 15,006 Direct | -13.86% | Disposed | -12.7% (price as of 2026-10-05) |
| July 13, 2026 | BLLN | S 10b5-1 | 2,477 | $123.84 | $306,752 | 17,421 Direct | -12.45% | Disposed | -11.9% (price as of 2026-10-05) |
| July 13, 2026 | BLLN | S 10b5-1 | 1,102 | $122.90 | $135,436 | 19,898 Direct | -5.25% | Disposed | -11.3% (price as of 2026-10-05) |
| July 13, 2026 | BLLN | M 10b5-1 | 10,000 | $2.80 | $28,000 | 21,000 Direct | +90.91% | Acquired | 3795.0% (price as of 2026-10-05) |
| July 13, 2026 | BLLN | M 10b5-1 | 10,000 | $2.80 | $28,000 | 11,000 Direct | +1000.00% | Acquired | 3795.0% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | M | 10,000 | $2.80 | $28,000 | 620,000 Direct | -1.59% | Disposed | 3795.0% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | M | 10,000 | $2.80 | $28,000 | 630,000 Direct | -1.56% | Disposed | 3795.0% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | S 10b5-1 | 563 | $104.32 | $58,732 | 1,000 Direct | -36.02% | Disposed | 4.5% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | S 10b5-1 | 2,398 | $103.63 | $248,505 | 1,563 Direct | -60.54% | Disposed | 5.2% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | S 10b5-1 | 2,978 | $102.60 | $305,543 | 3,961 Direct | -42.92% | Disposed | 6.3% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | S 10b5-1 | 2,461 | $101.37 | $249,472 | 6,939 Direct | -26.18% | Disposed | 7.6% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | S 10b5-1 | 1,000 | $100.05 | $100,050 | 9,400 Direct | -9.62% | Disposed | 9.0% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | S 10b5-1 | 600 | $98.74 | $59,244 | 10,400 Direct | -5.45% | Disposed | 10.5% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | S 10b5-1 | 230 | $104.47 | $24,028 | 11,000 Direct | -2.05% | Disposed | 4.4% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | S 10b5-1 | 2,889 | $103.68 | $299,532 | 11,230 Direct | -20.46% | Disposed | 5.2% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | S 10b5-1 | 2,816 | $102.77 | $289,400 | 14,119 Direct | -16.63% | Disposed | 6.1% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | S 10b5-1 | 2,361 | $101.55 | $239,760 | 16,935 Direct | -12.24% | Disposed | 7.4% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | S 10b5-1 | 1,704 | $100.37 | $171,030 | 19,296 Direct | -8.11% | Disposed | 8.7% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | M 10b5-1 | 10,000 | $2.80 | $28,000 | 21,000 Direct | +90.91% | Acquired | 3795.0% (price as of 2026-10-05) |
| June 15, 2026 | BLLN | M 10b5-1 | 10,000 | $2.80 | $28,000 | 11,000 Direct | +1000.00% | Acquired | 3795.0% (price as of 2026-10-05) |
| Nov. 7, 2025 | BLLN | J | 501,551 | · | · | 501,551 Direct | · | Acquired | (price as of 2026-10-05) |
| Nov. 7, 2025 | BLLN | J | 501,551 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Nov. 7, 2025 | BLLN | J | 640,000 | · | · | 640,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Nov. 7, 2025 | BLLN | J | 640,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Nov. 7, 2025 | BLLN | J | 2,325,108 | · | · | 2,325,108 Direct | · | Acquired | (price as of 2026-10-05) |
| Nov. 7, 2025 | BLLN | P | 1,000 | $60.00 | $60,000 | 1,000 Direct | · | Acquired | 81.8% (price as of 2026-10-05) |
| Nov. 7, 2025 | BLLN | J | 2,325,108 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Nov. 7, 2025 | BLLN | J | 2,325,108 | · | · | 2,325,108 Direct | · | Acquired | (price as of 2026-10-05) |
| Nov. 7, 2025 | BLLN | J | 2,325,108 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Sept. 24, 2026 | BLLN | Stock Option (right to buy) | Class A Common Stock | $2.80 | June 7, 2031 | 3,333 | Disposed |
| Sept. 9, 2026 | BLLN | Stock Option (right to buy) | Class A Common Stock | $2.80 | June 7, 2031 | 10,000 | Disposed |
| Sept. 9, 2026 | BLLN | Stock Option (right to buy) | Class A Common Stock | $2.80 | June 7, 2031 | 10,000 | Disposed |
| Sept. 3, 2026 | BLLN | Class B Common Stock | Class A Common Stock | · | · | 20,000 | Disposed |
| Aug. 25, 2026 | BLLN | Stock Option (right to buy) | Class A Common Stock | $2.80 | June 7, 2031 | 10,000 | Disposed |
| Aug. 10, 2026 | BLLN | Stock Option (right to buy) | Class A Common Stock | $2.80 | June 7, 2031 | 10,000 | Disposed |
| July 13, 2026 | BLLN | Stock Option (right to buy) | Class A Common Stock | $2.80 | June 7, 2031 | 10,000 | Disposed |
| July 13, 2026 | BLLN | Stock Option (right to buy) | Class A Common Stock | $2.80 | June 7, 2031 | 10,000 | Disposed |
| June 15, 2026 | BLLN | Stock Option (right to buy) | Class A Common Stock | $2.80 | June 7, 2031 | 10,000 | Disposed |
| June 15, 2026 | BLLN | Stock Option (right to buy) | Class A Common Stock | $2.80 | June 7, 2031 | 10,000 | Disposed |
| Nov. 7, 2025 | BLLN | Stock Option (right to buy) | Class A Common Stock | $20.04 | June 18, 2035 | 501,551 | Acquired |
| Nov. 7, 2025 | BLLN | Stock Option (right to buy) | Common Stock | $20.04 | June 18, 2035 | 501,551 | Disposed |
| Nov. 7, 2025 | BLLN | Stock Option (right to buy) | Class A Common Stock | $2.80 | June 7, 2031 | 640,000 | Acquired |
| Nov. 7, 2025 | BLLN | Stock Option (right to buy) | Common Stock | $2.80 | June 7, 2031 | 640,000 | Disposed |
| Nov. 7, 2025 | BLLN | Class B Common Stock | Class A Common Stock | · | · | 2,325,108 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 3 holdings
Securities held when first becoming an insider, per SEC Form 3.
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $332,939 | $113,845 | · | · | · | · | $14,000 | $10,044,036 |
| 2024 | $303,739 | $52,311 | · | · | · | · | $11,603 | $367,653 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.