Tan Irving

Director · Officer · WDC, SWK

As of 2026-09-27, Tan Irving has 127 Form 4 transactions on record across 2 companies — 102 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.

Pattern in the record: open-market sales filed in August in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $797KIndirect: $51.4M$52.2Mas of 2026-09-27
  • Direct $797K
  • Indirect $51.4M
WDCindirect112,500 sh$51.4M
SWKdirect4,714 sh$431K
WDCdirect800 sh$366K

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

WDC · 124 trades
2026-09-20: Withheld for tax, 1,091 sh ($482K)2026-09-20: Option exercise, 57 sh ($0)2026-09-20: Option exercise, 57 sh ($0)2026-09-17: Award / grant, 83 sh ($0)2026-09-01: Gift, 112,500 sh ($0)2026-09-01: Gift, 112,500 sh ($0)2026-08-31: Other acquisition, 112,500 sh ($0)2026-08-31: Other acquisition, 112,500 sh ($0)2026-08-26: Withheld for tax, 3,314 sh ($1.6M)2026-08-26: Option exercise, 42 sh ($0)2026-08-26: Option exercise, 42 sh ($0)2026-08-25: Withheld for tax, 476 sh ($215K)2026-08-25: Award / grant, 16,548 sh ($0)2026-08-25: Option exercise, 32 sh ($0)2026-08-25: Option exercise, 32 sh ($0)2026-08-21: Withheld for tax, 545 sh ($250K)2026-08-21: Option exercise, 25 sh ($0)2026-08-21: Option exercise, 25 sh ($0)2026-08-20: Withheld for tax, 144 sh ($68K)2026-08-20: Option exercise, 13 sh ($0)2026-08-20: Option exercise, 13 sh ($0)2026-08-11: Sale, 6,445 sh ($2.9M)2026-08-11: Sale, 4,822 sh ($2.1M)2026-08-11: Sale, 2,478 sh ($1.1M)2026-08-11: Sale, 1,880 sh ($836K)2026-08-11: Sale, 1,840 sh ($816K)2026-08-11: Sale, 1,546 sh ($691K)2026-08-11: Sale, 989 sh ($437K)2026-06-20: Withheld for tax, 1,090 sh ($813K)2026-06-20: Option exercise, 52 sh ($0)2026-06-20: Option exercise, 52 sh ($0)2026-06-17: Award / grant, 57 sh ($0)2026-05-25: Withheld for tax, 479 sh ($232K)2026-05-25: Option exercise, 30 sh ($0)2026-05-25: Option exercise, 30 sh ($0)2026-05-21: Withheld for tax, 587 sh ($286K)2026-05-21: Option exercise, 24 sh ($0)2026-05-21: Option exercise, 23 sh ($0)2026-05-20: Withheld for tax, 145 sh ($67K)2026-05-20: Option exercise, 12 sh ($0)2026-05-20: Option exercise, 13 sh ($0)2026-05-01: Sale, 7,355 sh ($3.0M)2026-05-01: Sale, 5,711 sh ($2.4M)2026-05-01: Sale, 3,257 sh ($1.3M)2026-05-01: Sale, 920 sh ($378K)2026-05-01: Sale, 680 sh ($280K)2026-05-01: Sale, 584 sh ($238K)2026-05-01: Sale, 546 sh ($224K)2026-05-01: Sale, 512 sh ($209K)2026-05-01: Sale, 435 sh ($181K)2026-03-20: Withheld for tax, 1,042 sh ($305K)2026-03-20: Option exercise, 49 sh ($0)2026-03-20: Option exercise, 49 sh ($0)2026-03-18: Award / grant, 123 sh ($0)2026-03-03: Withheld for tax, 3,512 sh ($880K)2026-03-03: Option exercise, 93 sh ($0)2026-03-03: Option exercise, 92 sh ($0)2026-02-25: Withheld for tax, 425 sh ($124K)2026-02-25: Option exercise, 27 sh ($0)2026-02-25: Option exercise, 27 sh ($0)2026-02-21: Withheld for tax, 523 sh ($149K)2026-02-21: Option exercise, 21 sh ($0)2026-02-21: Option exercise, 21 sh ($0)2026-02-20: Withheld for tax, 134 sh ($38K)2026-02-20: Option exercise, 11 sh ($0)2026-02-20: Option exercise, 11 sh ($0)2026-02-02: Sale, 3,626 sh ($949K)2026-02-02: Sale, 2,444 sh ($637K)2026-02-02: Sale, 2,250 sh ($585K)2026-02-02: Sale, 2,096 sh ($542K)2026-02-02: Sale, 1,500 sh ($387K)2026-02-02: Sale, 1,298 sh ($316K)2026-02-02: Sale, 1,100 sh ($274K)2026-02-02: Sale, 1,000 sh ($257K)2026-02-02: Sale, 1,000 sh ($252K)2026-02-02: Sale, 1,005 sh ($248K)2026-02-02: Sale, 981 sh ($238K)2026-02-02: Sale, 800 sh ($196K)2026-02-02: Sale, 400 sh ($100K)2026-02-02: Sale, 200 sh ($50K)2026-02-02: Sale, 100 sh ($26K)2026-02-02: Sale, 100 sh ($26K)2026-02-02: Sale, 100 sh ($25K)2025-12-20: Withheld for tax, 967 sh ($175K)2025-12-20: Option exercise, 43 sh ($0)2025-12-20: Option exercise, 44 sh ($0)2025-12-18: Award / grant, 255 sh ($0)2025-11-25: Withheld for tax, 374 sh ($58K)2025-11-25: Option exercise, 21 sh ($0)2025-11-25: Option exercise, 21 sh ($0)2025-11-21: Withheld for tax, 524 sh ($73K)2025-11-21: Option exercise, 17 sh ($0)2025-11-21: Option exercise, 16 sh ($0)2025-11-20: Withheld for tax, 104 sh ($15K)2025-11-20: Option exercise, 8 sh ($0)2025-11-20: Option exercise, 9 sh ($0)2025-11-03: Sale, 6,359 sh ($953K)2025-11-03: Sale, 6,019 sh ($897K)2025-11-03: Sale, 2,927 sh ($446K)2025-11-03: Sale, 2,500 sh ($383K)2025-11-03: Sale, 1,495 sh ($230K)2025-11-03: Sale, 700 sh ($106K)2025-09-20: Withheld for tax, 779 sh ($83K)2025-09-20: Option exercise, 34 sh ($0)2025-09-20: Option exercise, 35 sh ($0)2025-09-18: Award / grant, 369 sh ($0)2025-08-26: Award / grant, 74,162 sh ($0)2025-08-25: Withheld for tax, 247 sh ($20K)2025-08-25: Option exercise, 13 sh ($0)2025-08-25: Option exercise, 14 sh ($0)2025-08-21: Withheld for tax, 1,490 sh ($111K)2025-08-21: Option exercise, 42 sh ($0)2025-08-21: Option exercise, 42 sh ($0)2025-08-20: Withheld for tax, 1,205 sh ($91K)2025-08-20: Option exercise, 101 sh ($0)2025-08-20: Option exercise, 103 sh ($0)2025-08-19: Sale, 8,621 sh ($654K)2025-06-18: Award / grant, 688 sh ($0)2025-05-25: Withheld for tax, 116 sh ($6K)2025-05-23: Withheld for tax, 1,869 sh ($94K)2025-05-20: Withheld for tax, 39 sh ($2K)2025-05-13: Sale, 11,379 sh ($548K)2025-03-20: Withheld for tax, 457 sh ($20K)2025-03-03: Award / grant, 55,307 sh ($0)
SWK · 3 trades
2024-03-19: Award / grant, 54 sh ($5K)2024-03-19: Award / grant, 39 sh ($3K)2024-03-15: Award / grant, 408 sh ($36K)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-08-11WDCSale6,445 @ $446.38$2.9M−1.1% of holding577,512Form 4
2026-08-11WDCSale4,822 @ $445.45$2.1M−0.8% of holding583,957Form 4
2026-08-11WDCSale2,478 @ $441.48$1.1M−0.4% of holding593,488Form 4
2026-08-11WDCSale1,880 @ $444.67$836K−0.3% of holding588,779Form 4
2026-08-11WDCSale1,840 @ $443.35$816K−0.3% of holding590,659Form 4
2026-08-11WDCSale1,546 @ $447.18$691K−0.3% of holding575,966Form 4
2026-08-11WDCSale989 @ $442.22$437K−0.2% of holding592,499Form 4
2026-05-01WDCSale7,355 @ $413.92$3.0M−1.2% of holding598,585Form 4
2026-05-01WDCSale5,711 @ $413.12$2.4M−0.9% of holding605,940Form 4
2026-05-01WDCSale3,257 @ $406.52$1.3M−0.5% of holding614,893Form 4
2026-05-01WDCSale920 @ $410.76$378K−0.2% of holding612,331Form 4
2026-05-01WDCSale680 @ $411.87$280K−0.1% of holding611,651Form 4
2026-05-01WDCSale584 @ $408.23$238K−0.1% of holding613,797Form 4
2026-05-01WDCSale546 @ $409.63$224K−0.1% of holding613,251Form 4
2026-05-01WDCSale512 @ $407.32$209K−0.1% of holding614,381Form 4
2026-05-01WDCSale435 @ $415.02$181K−0.1% of holding598,150Form 4
2026-02-02WDCSale3,626 @ $261.84$949K−0.6% of holding624,086Form 4
2026-02-02WDCSale2,444 @ $260.84$637K−0.4% of holding627,712Form 4
2026-02-02WDCSale2,250 @ $259.93$585K−0.4% of holding630,156Form 4
2026-02-02WDCSale2,096 @ $258.65$542K−0.3% of holding632,406Form 4
2026-02-02WDCSale1,500 @ $257.82$387K−0.2% of holding634,502Form 4
2026-02-02WDCSale1,298 @ $243.50$316K−0.2% of holding641,307Form 4
2026-02-02WDCSale1,100 @ $248.95$274K−0.2% of holding638,402Form 4
2026-02-02WDCSale1,000 @ $256.76$257K−0.2% of holding636,002Form 4
2026-02-02WDCSale1,000 @ $252.15$252K−0.2% of holding637,202Form 4
2026-02-02WDCSale1,005 @ $247.26$248K−0.2% of holding639,502Form 4
2026-02-02WDCSale981 @ $242.23$238K−0.2% of holding642,605Form 4
2026-02-02WDCSale800 @ $245.00$196K−0.1% of holding640,507Form 4
2026-02-02WDCSale400 @ $250.71$100K−0.1% of holding623,586Form 4
2026-02-02WDCSale200 @ $249.49$50K−0.0% of holding638,202Form 4
2026-02-02WDCSale100 @ $262.55$26K−0.0% of holding623,986Form 4
2026-02-02WDCSale100 @ $255.00$26K−0.0% of holding637,002Form 4
2026-02-02WDCSale100 @ $253.40$25K−0.0% of holding637,102Form 4
2025-11-03WDCSale6,359 @ $149.79$953K−1.0% of holding653,089Form 4
2025-11-03WDCSale6,019 @ $149.02$897K−0.9% of holding659,448Form 4
2025-11-03WDCSale2,927 @ $152.24$446K−0.4% of holding649,462Form 4
2025-11-03WDCSale2,500 @ $153.18$383K−0.4% of holding646,962Form 4
2025-11-03WDCSale1,495 @ $153.93$230K−0.2% of holding645,467Form 4
2025-11-03WDCSale700 @ $150.90$106K−0.1% of holding652,389Form 4
2025-08-19WDCSale8,621 @ $75.90$654K−1.4% of holding594,836Form 4
2025-05-13WDCSale11,379 @ $48.19$548K−1.8% of holding605,481Form 4
86 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-09-20WDCWithheld for tax1,091265,613Form 4
2026-09-20WDCOption exercise57800Form 4
2026-09-20WDCOption exercise57266,704Form 4
2026-09-17WDCAward / grant83857Form 4
2026-09-01WDCGift112,5000Form 4
2026-09-01WDCGift112,500112,500Form 4
2026-08-31WDCOther acquisition112,500112,500Form 4
2026-08-31WDCOther acquisition112,500266,647Form 4
2026-08-26WDCWithheld for tax3,314379,147Form 4
2026-08-26WDCOption exercise42774Form 4
2026-08-26WDCOption exercise42382,461Form 4
2026-08-25WDCWithheld for tax476365,871Form 4
2026-08-25WDCAward / grant16,548382,419Form 4
2026-08-25WDCOption exercise32816Form 4
2026-08-25WDCOption exercise32366,347Form 4
2026-08-21WDCWithheld for tax545575,315Form 4
2026-08-21WDCOption exercise25575,860Form 4
2026-08-21WDCOption exercise25848Form 4
2026-08-20WDCWithheld for tax144575,835Form 4
2026-08-20WDCOption exercise13873Form 4
2026-08-20WDCOption exercise13575,979Form 4
2026-06-20WDCWithheld for tax1,090595,966Form 4
2026-06-20WDCOption exercise52597,056Form 4
2026-06-20WDCOption exercise52887Form 4
2026-06-17WDCAward / grant57939Form 4
2026-05-25WDCWithheld for tax479597,004Form 4
2026-05-25WDCOption exercise30597,483Form 4
2026-05-25WDCOption exercise30882Form 4
2026-05-21WDCWithheld for tax587597,453Form 4
2026-05-21WDCOption exercise24913Form 4
2026-05-21WDCOption exercise23598,040Form 4
2026-05-20WDCWithheld for tax145598,017Form 4
2026-05-20WDCOption exercise12598,162Form 4
2026-05-20WDCOption exercise13936Form 4
2026-03-20WDCWithheld for tax1,042618,150Form 4
2026-03-20WDCOption exercise49619,192Form 4
2026-03-20WDCOption exercise49949Form 4
2026-03-18WDCAward / grant123998Form 4
2026-03-03WDCWithheld for tax3,512619,143Form 4
2026-03-03WDCOption exercise93876Form 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.