Bor-Zen Tien
CIK 2114023 · View on SEC EDGAR ↗
Insider
First SEC filing: March 18, 2026 · Latest: June 9, 2026
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Insider at
Insider transactions
29 buys (P)
0 sells (S)
Net:
$828,956
+ 1 non-open-market transaction below
Avg return of open purchases vs now:
360.0%
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
1 other filing hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 7, 2026 | TSM | P | 42 | $73.31 | $3,079 | 270 Indirect | +18.42% | Acquired | 473.2% (price as of 2026-08-21) |
| Aug. 7, 2026 | TSM | P | 7 | $73.31 | $513 | 80 Indirect | +9.59% | Acquired | 473.2% (price as of 2026-08-21) |
| Aug. 3, 2026 | TSM | P | 1,000 | $73.06 | $73,060 | 14,051 Direct | +7.66% | Acquired | 475.1% (price as of 2026-08-21) |
| July 28, 2026 | TSM | P | 1,000 | $67.97 | $67,970 | 5,000 Indirect | +25.00% | Acquired | 518.2% (price as of 2026-08-21) |
| July 28, 2026 | TSM | P | 5 | $390.00 | $1,950 | 132 Direct | +3.94% | Acquired | 7.7% (price as of 2026-08-21) |
| July 28, 2026 | TSM | P | 10 | $390.00 | $3,900 | 127 Direct | +8.55% | Acquired | 7.7% (price as of 2026-08-21) |
| July 21, 2026 | TSM | P | 1,000 | $74.75 | $74,750 | 4,000 Indirect | +33.33% | Acquired | 462.1% (price as of 2026-08-21) |
| July 21, 2026 | TSM | P | 1,000 | $74.44 | $74,440 | 3,000 Indirect | +50.00% | Acquired | 464.5% (price as of 2026-08-21) |
| July 21, 2026 | TSM | P | 1,000 | $73.98 | $73,980 | 2,000 Indirect | +100.00% | Acquired | 468.0% (price as of 2026-08-21) |
| July 21, 2026 | TSM | P | 1,000 | $74.13 | $74,130 | 13,051 Direct | +8.30% | Acquired | 466.8% (price as of 2026-08-21) |
| July 20, 2026 | TSM | P | 10 | $405.00 | $4,050 | 117 Direct | +9.35% | Acquired | 3.8% (price as of 2026-08-21) |
| July 7, 2026 | TSM | P | 6 | $76.62 | $460 | 73 Indirect | +8.96% | Acquired | 448.4% (price as of 2026-08-21) |
| July 7, 2026 | TSM | P | 40 | $76.62 | $3,065 | 228 Indirect | +21.28% | Acquired | 448.4% (price as of 2026-08-21) |
| June 30, 2026 | TSM | P | 1,000 | $75.70 | $75,700 | 1,000 Indirect | — | Acquired | 455.1% (price as of 2026-08-21) |
| June 29, 2026 | TSM | P | 1,000 | $76.64 | $76,640 | 12,051 Direct | +9.05% | Acquired | 448.3% (price as of 2026-08-21) |
| June 5, 2026 | TSM | P | 7 | $76.01 | $532 | 67 Indirect | +11.67% | Acquired | 452.8% (price as of 2026-08-21) |
| June 5, 2026 | TSM | P | 43 | $76.01 | $3,268 | 188 Indirect | +29.66% | Acquired | 452.8% (price as of 2026-08-21) |
| May 20, 2026 | TSM | P | 7 | $400.00 | $2,800 | 107 Direct | +7.00% | Acquired | 5.0% (price as of 2026-08-21) |
| May 19, 2026 | TSM | P | 10 | $391.81 | $3,918 | 100 Direct | +11.11% | Acquired | 7.2% (price as of 2026-08-21) |
| May 19, 2026 | TSM | P | 1,000 | $69.83 | $69,830 | 11,051 Direct | +9.95% | Acquired | 501.7% (price as of 2026-08-21) |
| May 19, 2026 | TSM | P | 1,000 | $69.98 | $69,980 | 10,051 Direct | +11.05% | Acquired | 500.5% (price as of 2026-08-21) |
| May 8, 2026 | TSM | P | 7 | $71.82 | $503 | 60 Indirect | +13.21% | Acquired | 485.1% (price as of 2026-08-21) |
| May 8, 2026 | TSM | P | 44 | $71.82 | $3,160 | 145 Indirect | +43.56% | Acquired | 485.1% (price as of 2026-08-21) |
| April 28, 2026 | TSM | P | 5 | $390.00 | $1,950 | 90 Direct | +5.88% | Acquired | 7.7% (price as of 2026-08-21) |
| April 28, 2026 | TSM | P | 5 | $390.00 | $1,950 | 85 Direct | +6.25% | Acquired | 7.7% (price as of 2026-08-21) |
| April 28, 2026 | TSM | P | 10 | $386.00 | $3,860 | 80 Direct | +14.29% | Acquired | 8.9% (price as of 2026-08-21) |
| April 9, 2026 | TSM | P | 9 | $57.87 | $521 | 53 Indirect | +20.45% | Acquired | 626.1% (price as of 2026-08-21) |
| April 9, 2026 | TSM | P | 53 | $57.87 | $3,067 | 101 Indirect | +110.42% | Acquired | 626.1% (price as of 2026-08-21) |
| March 22, 2026 | TSM | P | 1,000 | $55.93 | $55,930 | 9,051 Direct | +12.42% | Acquired | 651.3% (price as of 2026-08-21) |
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 |
|---|---|---|---|---|---|---|---|
| April 24, 2026 | TSM | Equity Linked Notes | American Depositary Shares (TSM) [F1,F3,F4,F5] | — | June 3, 2026 | 20,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| March 18, 2026 | TSM | Common Shares (2330.TW) | 8,051 | Direct |
| March 18, 2026 | TSM | American Depositary Shares (TSM) [F1] | 70 | Direct |
| March 18, 2026 | TSM | Common Shares (2330.TW) | 48 | Indirect |
| March 18, 2026 | TSM | Common Shares (2330.TW) | 44 | Indirect |
| March 18, 2026 | TSM | Equity Linked Notes [F3,F4]→ American Depositary Shares (TSM) [F1,F3,F4] | — | Direct |