Tien Bor-Zen

Officer · TSM

As of 2026-09-16, Tien Bor-Zen has 33 Form 4 transactions on record across 1 company — 33 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: $5.9MIndirect: $36K$5.9Mas of 2026-09-16
  • Direct $5.9M
  • Indirect $36K
TSMdirect14,051 sh$5.9M
TSMindirect85 sh$36K

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

TSM · 33 trades
2026-09-07: Purchase, 43 sh ($3K)2026-09-07: Purchase, 5 sh ($381)2026-08-07: Purchase, 42 sh ($3K)2026-08-07: Purchase, 7 sh ($513)2026-08-03: Purchase, 1,000 sh ($73K)2026-07-28: Purchase, 1,000 sh ($68K)2026-07-28: Purchase, 10 sh ($4K)2026-07-28: Purchase, 5 sh ($2K)2026-07-21: Purchase, 1,000 sh ($75K)2026-07-21: Purchase, 1,000 sh ($74K)2026-07-21: Purchase, 1,000 sh ($74K)2026-07-21: Purchase, 1,000 sh ($74K)2026-07-20: Purchase, 10 sh ($4K)2026-07-07: Purchase, 40 sh ($3K)2026-07-07: Purchase, 6 sh ($460)2026-06-30: Purchase, 1,000 sh ($76K)2026-06-29: Purchase, 1,000 sh ($77K)2026-06-05: Purchase, 43 sh ($3K)2026-06-05: Purchase, 7 sh ($532)2026-05-20: Purchase, 7 sh ($3K)2026-05-19: Purchase, 1,000 sh ($70K)2026-05-19: Purchase, 1,000 sh ($70K)2026-05-19: Purchase, 10 sh ($4K)2026-05-08: Purchase, 44 sh ($3K)2026-05-08: Purchase, 7 sh ($503)2026-04-28: Purchase, 10 sh ($4K)2026-04-28: Purchase, 5 sh ($2K)2026-04-28: Purchase, 5 sh ($2K)2026-04-24: Code H, 20,000 sh2026-04-24: Code H, 20,000 sh2026-04-09: Purchase, 53 sh ($3K)2026-04-09: Purchase, 9 sh ($521)2026-03-22: Purchase, 1,000 sh ($56K)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-09-07TSMPurchase43 @ $76.20$3K+15.9% of holding313Form 4
2026-09-07TSMPurchase5 @ $76.20$381+6.3% of holding85Form 4
2026-08-07TSMPurchase42 @ $73.31$3K+18.4% of holding270Form 4
2026-08-07TSMPurchase7 @ $73.31$513+9.6% of holding80Form 4
2026-08-03TSMPurchase1,000 @ $73.06$73K+7.7% of holding14,051Form 4
2026-07-28TSMPurchase1,000 @ $67.97$68K+25.0% of holding5,000Form 4
2026-07-28TSMPurchase10 @ $390.00$4K+8.5% of holding127Form 4
2026-07-28TSMPurchase5 @ $390.00$2K+3.9% of holding132Form 4
2026-07-21TSMPurchase1,000 @ $74.75$75K+33.3% of holding4,000Form 4
2026-07-21TSMPurchase1,000 @ $74.44$74K+50.0% of holding3,000Form 4
2026-07-21TSMPurchase1,000 @ $74.13$74K+8.3% of holding13,051Form 4
2026-07-21TSMPurchase1,000 @ $73.98$74K+100.0% of holding2,000Form 4
2026-07-20TSMPurchase10 @ $405.00$4K+9.3% of holding117Form 4
2026-07-07TSMPurchase40 @ $76.62$3K+21.3% of holding228Form 4
2026-07-07TSMPurchase6 @ $76.62$460+9.0% of holding73Form 4
2026-06-30TSMPurchase1,000 @ $75.70$76Kownership Δ n/a1,000Form 4
2026-06-29TSMPurchase1,000 @ $76.64$77K+9.0% of holding12,051Form 4
2026-06-05TSMPurchase43 @ $76.01$3K+29.7% of holding188Form 4
2026-06-05TSMPurchase7 @ $76.01$532+11.7% of holding67Form 4
2026-05-20TSMPurchase7 @ $400.00$3K+7.0% of holding107Form 4
2026-05-19TSMPurchase1,000 @ $69.98$70K+11.0% of holding10,051Form 4
2026-05-19TSMPurchase1,000 @ $69.83$70K+9.9% of holding11,051Form 4
2026-05-19TSMPurchase10 @ $391.81$4K+11.1% of holding100Form 4
2026-05-08TSMPurchase44 @ $71.82$3K+43.6% of holding145Form 4
2026-05-08TSMPurchase7 @ $71.82$503+13.2% of holding60Form 4
2026-04-28TSMPurchase10 @ $386.00$4K+14.3% of holding80Form 4
2026-04-28TSMPurchase5 @ $390.00$2K+5.9% of holding90Form 4
2026-04-28TSMPurchase5 @ $390.00$2K+6.3% of holding85Form 4
2026-04-09TSMPurchase53 @ $57.87$3K+110.4% of holding101Form 4
2026-04-09TSMPurchase9 @ $57.87$521+20.5% of holding53Form 4
2026-03-22TSMPurchase1,000 @ $55.93$56K+12.4% of holding9,051Form 4
2 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-04-24TSMCode H20,0000Form 4
2026-04-24TSMCode H20,0000Form 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.