David Tsao

CIK 2087127 · View on SEC EDGAR ↗

Insider

First SEC filing: Nov. 5, 2025 · Latest: June 17, 2026

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Insider at

Insider transactions

1 buys (P) 22 sells (S) Net: $-5,411,600 + 18 non-open-market transactions below Avg return of open purchases vs now: 55.4% last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

18 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Aug. 10, 2026 BLLN S 10b5-1 10,000 $92.86 $928,600 1,000 Direct -90.91% Disposed 0.4% (price as of 2026-08-20)
July 13, 2026 BLLN S 10b5-1 1,028 $126.90 $130,453 1,000 Direct -50.69% Disposed -26.5% (price as of 2026-08-20)
July 13, 2026 BLLN S 10b5-1 3,835 $125.76 $482,290 2,028 Direct -65.41% Disposed -25.8% (price as of 2026-08-20)
July 13, 2026 BLLN S 10b5-1 1,725 $124.65 $215,021 5,863 Direct -22.73% Disposed -25.2% (price as of 2026-08-20)
July 13, 2026 BLLN S 10b5-1 2,274 $123.71 $281,317 7,588 Direct -23.06% Disposed -24.6% (price as of 2026-08-20)
July 13, 2026 BLLN S 10b5-1 1,138 $122.84 $139,792 9,862 Direct -10.35% Disposed -24.1% (price as of 2026-08-20)
July 13, 2026 BLLN S 10b5-1 821 $126.89 $104,177 11,000 Direct -6.95% Disposed -26.5% (price as of 2026-08-20)
July 13, 2026 BLLN S 10b5-1 3,185 $125.85 $400,832 11,821 Direct -21.22% Disposed -25.9% (price as of 2026-08-20)
July 13, 2026 BLLN S 10b5-1 2,415 $124.90 $301,634 15,006 Direct -13.86% Disposed -25.3% (price as of 2026-08-20)
July 13, 2026 BLLN S 10b5-1 2,477 $123.84 $306,752 17,421 Direct -12.45% Disposed -24.7% (price as of 2026-08-20)
July 13, 2026 BLLN S 10b5-1 1,102 $122.90 $135,436 19,898 Direct -5.25% Disposed -24.1% (price as of 2026-08-20)
June 15, 2026 BLLN S 10b5-1 563 $104.32 $58,732 1,000 Direct -36.02% Disposed -10.6% (price as of 2026-08-20)
June 15, 2026 BLLN S 10b5-1 2,398 $103.63 $248,505 1,563 Direct -60.54% Disposed -10.0% (price as of 2026-08-20)
June 15, 2026 BLLN S 10b5-1 2,978 $102.60 $305,543 3,961 Direct -42.92% Disposed -9.1% (price as of 2026-08-20)
June 15, 2026 BLLN S 10b5-1 2,461 $101.37 $249,472 6,939 Direct -26.18% Disposed -8.0% (price as of 2026-08-20)
June 15, 2026 BLLN S 10b5-1 1,000 $100.05 $100,050 9,400 Direct -9.62% Disposed -6.8% (price as of 2026-08-20)
June 15, 2026 BLLN S 10b5-1 600 $98.74 $59,244 10,400 Direct -5.45% Disposed -5.5% (price as of 2026-08-20)
June 15, 2026 BLLN S 10b5-1 230 $104.47 $24,028 11,000 Direct -2.05% Disposed -10.7% (price as of 2026-08-20)
June 15, 2026 BLLN S 10b5-1 2,889 $103.68 $299,532 11,230 Direct -20.46% Disposed -10.0% (price as of 2026-08-20)
June 15, 2026 BLLN S 10b5-1 2,816 $102.77 $289,400 14,119 Direct -16.63% Disposed -9.2% (price as of 2026-08-20)
June 15, 2026 BLLN S 10b5-1 2,361 $101.55 $239,760 16,935 Direct -12.24% Disposed -8.2% (price as of 2026-08-20)
June 15, 2026 BLLN S 10b5-1 1,704 $100.37 $171,030 19,296 Direct -8.11% Disposed -7.1% (price as of 2026-08-20)
Nov. 7, 2025 BLLN P 1,000 $60.00 $60,000 1,000 Direct — Acquired 55.4% (price as of 2026-08-20)

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
Aug. 10, 2026 BLLN Stock Option (right to buy) Class A Common Stock (10,000) $2.80 June 7, 2031 10,000 Disposed
July 13, 2026 BLLN Stock Option (right to buy) Class A Common Stock (10,000) $2.80 June 7, 2031 10,000 Disposed
July 13, 2026 BLLN Stock Option (right to buy) Class A Common Stock (10,000) $2.80 June 7, 2031 10,000 Disposed
June 15, 2026 BLLN Stock Option (right to buy) Class A Common Stock (10,000) $2.80 June 7, 2031 10,000 Disposed
June 15, 2026 BLLN Stock Option (right to buy) Class A Common Stock (10,000) $2.80 June 7, 2031 10,000 Disposed
Nov. 7, 2025 BLLN Stock Option (right to buy) Class A Common Stock (501,551) $20.04 June 18, 2035 501,551 Acquired
Nov. 7, 2025 BLLN Stock Option (right to buy) Common Stock (501,551) $20.04 June 18, 2035 501,551 Disposed
Nov. 7, 2025 BLLN Stock Option (right to buy) Class A Common Stock (640,000) $2.80 June 7, 2031 640,000 Acquired
Nov. 7, 2025 BLLN Stock Option (right to buy) Common Stock (640,000) $2.80 June 7, 2031 640,000 Disposed
Nov. 7, 2025 BLLN Class B Common Stock Class A Common Stock (2,325,108) — — 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.

Date Ticker Security Shares Ownership
Nov. 5, 2025 BLLN Common Stock [F1] 2,325,108 Direct
Nov. 5, 2025 BLLN Stock Option (right to buy)→ Common Stock [F4] (640,000) 640,000 Direct
Nov. 5, 2025 BLLN Stock Option (right to buy)→ Common Stock [F4] (501,551) 501,551 Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

BLLN

CTO
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.