Meister Keith A.

Director · Ten-percent owner · ILMN, MGM, WGS, VSTS

As of 2026-09-16, Meister Keith A. has 196 Form 4 transactions on record across 4 companies — 156 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 September in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $5.0MIndirect: $1.1B$1.1Bas of 2026-09-16
  • Direct $5.0M
  • Indirect $1.1B
WGSindirect4,784,570 sh$466.1M
VSTSindirect19,813,963 sh$272.8M
MGMindirect5,347,978 sh$205.3M
ILMNindirect770,350 sh$176.4M
MGMdirect70,478 sh$2.7M
ILMNdirect6,780 sh$1.6M
VSTSdirect50,443 sh$695K

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

ILMN · 114 trades
2026-09-04: Sale, 100,650 sh ($22.0M)2026-09-04: Sale, 11,351 sh ($2.5M)2026-09-04: Sale, 7,500 sh ($1.6M)2026-09-03: Sale, 14,196 sh ($3.1M)2026-09-03: Sale, 13,717 sh ($3.0M)2026-09-03: Sale, 13,261 sh ($2.9M)2026-09-03: Sale, 9,961 sh ($2.2M)2026-09-03: Sale, 9,721 sh ($2.1M)2026-09-03: Sale, 8,439 sh ($1.8M)2026-09-03: Sale, 6,656 sh ($1.5M)2026-09-02: Sale, 57,488 sh ($12.3M)2026-09-02: Sale, 10,620 sh ($2.3M)2026-08-27: Sale, 54,309 sh ($12.4M)2026-08-27: Sale, 28,439 sh ($6.6M)2026-08-27: Sale, 24,363 sh ($5.6M)2026-08-27: Sale, 16,990 sh ($3.9M)2026-08-27: Sale, 9,405 sh ($2.2M)2026-08-27: Sale, 4,873 sh ($1.1M)2026-08-26: Sale, 53,123 sh ($12.0M)2026-08-26: Sale, 38,213 sh ($8.6M)2026-08-26: Sale, 14,782 sh ($3.3M)2026-08-26: Sale, 425 sh ($97K)2026-08-25: Sale, 92,776 sh ($20.9M)2026-08-25: Sale, 38,201 sh ($8.6M)2026-08-25: Sale, 42 sh ($10K)2026-08-21: Sale, 133,256 sh ($29.2M)2026-08-21: Sale, 86,825 sh ($19.0M)2026-08-21: Sale, 13,668 sh ($2.9M)2026-08-21: Sale, 13,050 sh ($2.8M)2026-08-21: Sale, 12,602 sh ($2.7M)2026-08-21: Sale, 9,365 sh ($2.0M)2026-08-21: Sale, 8,187 sh ($1.8M)2026-08-21: Sale, 7,151 sh ($1.5M)2026-08-21: Sale, 6,821 sh ($1.5M)2026-08-21: Sale, 4,528 sh ($953K)2026-08-21: Sale, 3,883 sh ($855K)2026-08-20: Sale, 71,939 sh ($15.3M)2026-08-20: Sale, 42,218 sh ($9.1M)2026-08-20: Sale, 34,009 sh ($7.2M)2026-08-20: Sale, 29,805 sh ($6.3M)2026-08-20: Sale, 23,638 sh ($5.0M)2026-08-20: Sale, 21,147 sh ($4.6M)2026-08-20: Sale, 18,405 sh ($4.0M)2026-08-20: Sale, 15,263 sh ($3.3M)2026-08-20: Sale, 9,348 sh ($2.1M)2026-08-20: Sale, 9,078 sh ($1.9M)2026-08-20: Sale, 5,693 sh ($1.2M)2026-08-20: Sale, 3,563 sh ($743K)2026-08-20: Sale, 1,132 sh ($235K)2026-08-19: Sale, 57,544 sh ($11.7M)2026-08-19: Sale, 19,884 sh ($4.0M)2026-08-19: Sale, 12,813 sh ($2.6M)2026-08-19: Sale, 4,759 sh ($972K)2026-08-05: Sale, 118,753 sh ($23.7M)2026-08-05: Sale, 68,047 sh ($13.5M)2026-08-05: Sale, 52,249 sh ($10.4M)2026-08-05: Sale, 30,398 sh ($6.1M)2026-08-05: Sale, 11,372 sh ($2.3M)2026-08-05: Sale, 2,450 sh ($498K)2026-08-04: Sale, 166,501 sh ($33.0M)2026-08-04: Sale, 67,988 sh ($13.8M)2026-08-04: Sale, 67,725 sh ($13.6M)2026-08-04: Sale, 48,186 sh ($9.8M)2026-08-04: Sale, 37,242 sh ($7.5M)2026-08-04: Sale, 35,160 sh ($7.0M)2026-08-04: Sale, 27,854 sh ($5.5M)2026-08-04: Sale, 7,202 sh ($1.4M)2026-06-30: Award / grant, 142 sh ($21K)2026-06-01: Sale, 87,653 sh ($14.4M)2026-06-01: Sale, 70,262 sh ($11.4M)2026-06-01: Sale, 61,613 sh ($10.1M)2026-06-01: Sale, 15,472 sh ($2.6M)2026-05-29: Sale, 92,877 sh ($15.3M)2026-05-29: Sale, 63,020 sh ($10.3M)2026-05-29: Sale, 19,832 sh ($3.2M)2026-05-29: Sale, 11,760 sh ($1.9M)2026-05-29: Sale, 6,888 sh ($1.1M)2026-05-29: Sale, 6,198 sh ($1.0M)2026-05-29: Sale, 5,256 sh ($850K)2026-05-29: Sale, 4,579 sh ($735K)2026-05-29: Sale, 2,225 sh ($361K)2026-05-29: Sale, 1,961 sh ($324K)2026-05-28: Sale, 110,424 sh ($16.3M)2026-05-28: Sale, 71,986 sh ($11.3M)2026-05-28: Sale, 37,590 sh ($5.9M)2026-05-28: Other acquisition, 24,562 sh ($3.8M)2026-05-28: Exercise, 24,562 sh ($2.5M)2026-05-28: Exercise, 24,562 sh2026-05-28: Exercise, 24,562 sh2026-05-21: Award / grant, 2,072 sh ($300K)2026-05-14: Sale, 52,776 sh ($7.6M)2026-05-14: Sale, 25,352 sh ($3.7M)2026-05-14: Sale, 13,776 sh ($2.0M)2026-05-14: Sale, 12,309 sh ($1.8M)2026-05-14: Sale, 180 sh ($27K)2026-05-13: Sale, 159,623 sh ($23.2M)2026-05-13: Sale, 53,610 sh ($7.8M)2026-05-13: Sale, 6,524 sh ($962K)2026-05-13: Sale, 5,310 sh ($787K)2026-05-12: Other acquisition, 255,378 sh ($36.9M)2026-05-12: Exercise, 255,378 sh ($26.3M)2026-05-12: Exercise, 255,378 sh2026-05-12: Exercise, 255,378 sh2026-05-11: Other acquisition, 79,568 sh ($11.4M)2026-05-11: Exercise, 79,568 sh ($8.2M)2026-05-11: Exercise, 79,568 sh2026-05-11: Exercise, 79,568 sh2026-05-07: Other acquisition, 9,236 sh ($1.3M)2026-05-07: Exercise, 9,236 sh ($950K)2026-05-07: Exercise, 9,236 sh2026-05-07: Exercise, 9,236 sh2026-03-31: Award / grant, 161 sh ($21K)2025-05-21: Award / grant, 3,780 sh ($0)2025-03-28: Award / grant, 625 sh ($0)
WGS · 52 trades
2026-06-18: Award / grant, 4,248 sh ($0)2026-06-18: Option exercise, 3,576 sh ($0)2026-06-18: Option exercise, 3,576 sh ($0)2026-05-15: Purchase, 27,408 sh ($1.0M)2026-05-15: Purchase, 18,865 sh ($751K)2026-05-14: Purchase, 88,107 sh ($3.4M)2026-05-14: Purchase, 51,893 sh ($2.1M)2026-05-13: Purchase, 94,074 sh ($3.7M)2026-05-13: Purchase, 70,926 sh ($2.8M)2026-05-11: Purchase, 252,734 sh ($10.0M)2026-05-11: Purchase, 246,734 sh ($9.6M)2026-05-11: Purchase, 532 sh ($21K)2026-05-08: Purchase, 79,144 sh ($3.2M)2026-05-08: Purchase, 73,104 sh ($3.0M)2026-05-08: Purchase, 15,745 sh ($598K)2026-05-08: Purchase, 3,396 sh ($131K)2026-05-07: Purchase, 123,393 sh ($4.6M)2026-05-07: Purchase, 128,181 sh ($4.5M)2026-05-07: Purchase, 116,412 sh ($4.5M)2026-05-07: Purchase, 94,356 sh ($3.7M)2026-05-07: Purchase, 56,630 sh ($2.3M)2026-05-07: Purchase, 14,786 sh ($537K)2026-03-05: Purchase, 60,892 sh ($5.0M)2026-03-05: Purchase, 47,623 sh ($3.8M)2026-03-05: Purchase, 29,236 sh ($2.4M)2026-03-05: Purchase, 1,971 sh ($156K)2026-03-05: Purchase, 304 sh ($24K)2026-03-03: Purchase, 19,686 sh ($1.4M)2026-03-03: Purchase, 8,439 sh ($603K)2026-03-03: Purchase, 921 sh ($70K)2026-03-03: Purchase, 249 sh ($19K)2026-03-03: Purchase, 200 sh ($14K)2025-06-18: Award / grant, 3,576 sh ($0)2025-06-18: Option exercise, 12,924 sh ($0)2025-06-18: Option exercise, 12,924 sh ($0)2025-05-14: Purchase, 25,356 sh ($1.5M)2025-05-14: Purchase, 24,644 sh ($1.5M)2025-05-08: Purchase, 79,236 sh ($4.4M)2025-05-08: Purchase, 10,897 sh ($621K)2025-05-08: Purchase, 9,867 sh ($568K)2025-05-06: Award / grant, 44,942 sh ($2.8M)2025-05-06: Award / grant, 42,500 sh ($2.7M)2025-05-06: Award / grant, 26,798 sh ($1.6M)2025-05-06: Award / grant, 9,728 sh ($622K)2025-05-05: Award / grant, 62,198 sh ($4.1M)2025-05-05: Award / grant, 42,472 sh ($2.8M)2025-05-05: Award / grant, 40,335 sh ($2.6M)2025-05-05: Award / grant, 7,528 sh ($504K)2025-05-02: Award / grant, 57,012 sh ($3.6M)2025-05-02: Award / grant, 51,172 sh ($3.3M)2025-05-02: Award / grant, 26,678 sh ($1.7M)2025-05-02: Award / grant, 23,485 sh ($1.5M)
MGM · 18 trades
2026-06-30: Award / grant, 837 sh ($40K)2026-05-07: Award / grant, 6,298 sh ($0)2026-05-06: Option exercise, 6,675 sh ($0)2026-05-06: Option exercise, 6,675 sh ($0)2026-03-31: Award / grant, 1,081 sh ($40K)2026-03-09: Sale, 37,500 sh ($1.3M)2025-12-31: Award / grant, 1,096 sh ($40K)2025-09-30: Award / grant, 1,154 sh ($40K)2025-09-11: Sale, 242,000 sh ($8.6M)2025-06-30: Award / grant, 1,163 sh ($40K)2025-06-13: Sale, 59,634 sh ($1.9M)2025-06-13: Sale, 366 sh ($12K)2025-05-08: Award / grant, 6,675 sh ($0)2025-05-02: Option exercise, 5,261 sh ($0)2025-05-02: Option exercise, 5,261 sh ($0)2025-03-31: Award / grant, 1,350 sh ($40K)2024-12-31: Award / grant, 1,154 sh ($40K)2024-12-13: Sale, 51,000 sh ($1.9M)
VSTS · 12 trades
2026-02-18: Award / grant, 18,253 sh ($0)2026-01-02: Award / grant, 15,958 sh ($0)2025-12-17: Purchase, 209,842 sh ($1.4M)2025-12-16: Purchase, 800,222 sh ($5.4M)2025-05-28: Purchase, 314,390 sh ($1.9M)2025-05-27: Purchase, 109,008 sh ($659K)2025-05-23: Purchase, 377,277 sh ($2.2M)2025-05-09: Purchase, 138,048 sh ($872K)2025-05-08: Purchase, 857,299 sh ($5.2M)2025-03-18: Award / grant, 28 sh ($0)2025-01-28: Award / grant, 8,734 sh ($0)2025-01-06: Award / grant, 16 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-09-04ILMNSale100,650 @ $218.39$22.0M−11.4% of holding781,701Form 4
2026-09-04ILMNSale11,351 @ $219.18$2.5M−1.5% of holding770,350Form 4
2026-09-04ILMNSale7,500 @ $217.28$1.6M−0.8% of holding882,351Form 4
2026-09-03ILMNSale14,196 @ $217.29$3.1M−1.5% of holding929,906Form 4
2026-09-03ILMNSale13,717 @ $219.41$3.0M−1.5% of holding906,468Form 4
2026-09-03ILMNSale13,261 @ $216.38$2.9M−1.4% of holding944,102Form 4
2026-09-03ILMNSale9,961 @ $221.55$2.2M−1.1% of holding889,851Form 4
2026-09-03ILMNSale9,721 @ $218.33$2.1M−1.0% of holding920,185Form 4
2026-09-03ILMNSale8,439 @ $215.20$1.8M−0.9% of holding957,363Form 4
2026-09-03ILMNSale6,656 @ $220.17$1.5M−0.7% of holding899,812Form 4
2026-09-02ILMNSale57,488 @ $213.20$12.3M−5.6% of holding976,422Form 4
2026-09-02ILMNSale10,620 @ $213.73$2.3M−1.1% of holding965,802Form 4
2026-08-27ILMNSale54,309 @ $227.67$12.4M−4.7% of holding1,113,107Form 4
2026-08-27ILMNSale28,439 @ $230.54$6.6M−2.7% of holding1,043,315Form 4
2026-08-27ILMNSale24,363 @ $228.64$5.6M−2.2% of holding1,088,744Form 4
2026-08-27ILMNSale16,990 @ $229.72$3.9M−1.6% of holding1,071,754Form 4
2026-08-27ILMNSale9,405 @ $231.23$2.2M−0.9% of holding1,033,910Form 4
2026-08-27ILMNSale4,873 @ $226.74$1.1M−0.4% of holding1,167,416Form 4
2026-08-26ILMNSale53,123 @ $225.69$12.0M−4.3% of holding1,187,496Form 4
2026-08-26ILMNSale38,213 @ $224.72$8.6M−3.0% of holding1,240,619Form 4
2026-08-26ILMNSale14,782 @ $226.50$3.3M−1.2% of holding1,172,714Form 4
2026-08-26ILMNSale425 @ $227.22$97K−0.0% of holding1,172,289Form 4
2026-08-25ILMNSale92,776 @ $225.26$20.9M−6.6% of holding1,317,075Form 4
2026-08-25ILMNSale38,201 @ $226.13$8.6M−2.9% of holding1,278,874Form 4
2026-08-25ILMNSale42 @ $226.79$10K−0.0% of holding1,278,832Form 4
2026-08-21ILMNSale133,256 @ $219.47$29.2M−8.6% of holding1,413,734Form 4
2026-08-21ILMNSale86,825 @ $218.60$19.0M−5.3% of holding1,546,990Form 4
2026-08-21ILMNSale13,668 @ $214.64$2.9M−0.8% of holding1,663,969Form 4
2026-08-21ILMNSale13,050 @ $212.65$2.8M−0.8% of holding1,684,458Form 4
2026-08-21ILMNSale12,602 @ $216.44$2.7M−0.8% of holding1,642,002Form 4
2026-08-21ILMNSale9,365 @ $215.61$2.0M−0.6% of holding1,654,604Form 4
2026-08-21ILMNSale8,187 @ $217.84$1.8M−0.5% of holding1,633,815Form 4
2026-08-21ILMNSale7,151 @ $211.54$1.5M−0.4% of holding1,697,508Form 4
2026-08-21ILMNSale6,821 @ $213.81$1.5M−0.4% of holding1,677,637Form 4
2026-08-21ILMNSale4,528 @ $210.45$953K−0.3% of holding1,704,659Form 4
2026-08-21ILMNSale3,883 @ $220.13$855K−0.3% of holding1,409,851Form 4
2026-08-20ILMNSale71,939 @ $213.36$15.3M−3.8% of holding1,821,261Form 4
2026-08-20ILMNSale42,218 @ $214.57$9.1M−2.3% of holding1,779,043Form 4
2026-08-20ILMNSale34,009 @ $211.90$7.2M−1.7% of holding1,923,005Form 4
2026-08-20ILMNSale29,805 @ $212.83$6.3M−1.5% of holding1,893,200Form 4
2026-08-20ILMNSale23,638 @ $210.66$5.0M−1.2% of holding1,957,014Form 4
2026-08-20ILMNSale21,147 @ $217.72$4.6M−1.2% of holding1,724,228Form 4
2026-08-20ILMNSale18,405 @ $215.62$4.0M−1.0% of holding1,760,638Form 4
2026-08-20ILMNSale15,263 @ $216.88$3.3M−0.9% of holding1,745,375Form 4
2026-08-20ILMNSale9,348 @ $219.82$2.1M−0.5% of holding1,709,187Form 4
2026-08-20ILMNSale9,078 @ $209.68$1.9M−0.5% of holding1,980,652Form 4
2026-08-20ILMNSale5,693 @ $218.46$1.2M−0.3% of holding1,718,535Form 4
2026-08-20ILMNSale3,563 @ $208.55$743K−0.2% of holding1,989,730Form 4
2026-08-20ILMNSale1,132 @ $207.65$235K−0.1% of holding1,993,293Form 4
2026-08-19ILMNSale57,544 @ $203.16$11.7M−2.8% of holding2,011,997Form 4
2026-08-19ILMNSale19,884 @ $202.37$4.0M−1.0% of holding2,069,541Form 4
2026-08-19ILMNSale12,813 @ $205.00$2.6M−0.6% of holding1,994,425Form 4
2026-08-19ILMNSale4,759 @ $204.16$972K−0.2% of holding2,007,238Form 4
2026-08-05ILMNSale118,753 @ $199.87$23.7M−5.3% of holding2,133,645Form 4
2026-08-05ILMNSale68,047 @ $198.97$13.5M−2.9% of holding2,252,398Form 4
2026-08-05ILMNSale52,249 @ $198.18$10.4M−2.2% of holding2,320,445Form 4
2026-08-05ILMNSale30,398 @ $201.37$6.1M−1.4% of holding2,103,247Form 4
2026-08-05ILMNSale11,372 @ $201.80$2.3M−0.5% of holding2,091,875Form 4
2026-08-05ILMNSale2,450 @ $203.28$498K−0.1% of holding2,089,425Form 4
2026-08-04ILMNSale166,501 @ $198.24$33.0M−6.0% of holding2,628,995Form 4
2026-08-04ILMNSale67,988 @ $203.09$13.8M−2.8% of holding2,372,694Form 4
2026-08-04ILMNSale67,725 @ $201.44$13.6M−2.6% of holding2,488,868Form 4
2026-08-04ILMNSale48,186 @ $202.43$9.8M−1.9% of holding2,440,682Form 4
2026-08-04ILMNSale37,242 @ $200.65$7.5M−1.4% of holding2,556,593Form 4
2026-08-04ILMNSale35,160 @ $199.51$7.0M−1.3% of holding2,593,835Form 4
2026-08-04ILMNSale27,854 @ $197.48$5.5M−1.0% of holding2,795,496Form 4
2026-08-04ILMNSale7,202 @ $196.74$1.4M−0.3% of holding2,823,350Form 4
2026-06-01ILMNSale87,653 @ $164.34$14.4M−3.0% of holding2,845,924Form 4
2026-06-01ILMNSale70,262 @ $162.41$11.4M−2.3% of holding2,995,190Form 4
2026-06-01ILMNSale61,613 @ $163.56$10.1M−2.1% of holding2,933,577Form 4
2026-06-01ILMNSale15,472 @ $165.50$2.6M−0.5% of holding2,830,452Form 4
2026-05-29ILMNSale92,877 @ $164.56$15.3M−2.9% of holding3,067,413Form 4
2026-05-29ILMNSale63,020 @ $162.86$10.3M−2.0% of holding3,166,488Form 4
2026-05-29ILMNSale19,832 @ $163.57$3.2M−0.6% of holding3,236,396Form 4
2026-05-29ILMNSale11,760 @ $159.57$1.9M−0.4% of holding3,268,288Form 4
2026-05-29ILMNSale6,888 @ $164.75$1.1M−0.2% of holding3,229,508Form 4
2026-05-29ILMNSale6,198 @ $163.97$1.0M−0.2% of holding3,160,290Form 4
2026-05-29ILMNSale5,256 @ $161.64$850K−0.2% of holding3,258,453Form 4
2026-05-29ILMNSale4,579 @ $160.50$735K−0.1% of holding3,263,709Form 4
2026-05-29ILMNSale2,225 @ $162.44$361K−0.1% of holding3,256,228Form 4
57 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-06-30MGMAward / grant83770,478Form 4
2026-06-30ILMNAward / grant1426,780Form 4
2026-06-18WGSAward / grant4,2484,248Form 4
2026-06-18WGSOption exercise3,5760Form 4
2026-06-18WGSOption exercise3,57623,705Form 4
2026-05-28ILMNOther acquisition24,5623,500,048Form 4
2026-05-28ILMNExercise24,5623,524,610Form 4
2026-05-28ILMNExercise24,5620Form 4
2026-05-28ILMNExercise24,5620Form 4
2026-05-21ILMNAward / grant2,0726,638Form 4
2026-05-12ILMNOther acquisition255,3783,829,508Form 4
2026-05-12ILMNExercise255,3784,084,886Form 4
2026-05-12ILMNExercise255,37824,562Form 4
2026-05-12ILMNExercise255,37824,562Form 4
2026-05-11ILMNOther acquisition79,5683,829,508Form 4
2026-05-11ILMNExercise79,5683,909,076Form 4
2026-05-11ILMNExercise79,568279,940Form 4
2026-05-11ILMNExercise79,568279,940Form 4
2026-05-07ILMNOther acquisition9,2363,829,508Form 4
2026-05-07ILMNExercise9,2363,838,744Form 4
2026-05-07MGMAward / grant6,2986,298Form 4
2026-05-07ILMNExercise9,236359,508Form 4
2026-05-07ILMNExercise9,236359,508Form 4
2026-05-06MGMOption exercise6,67569,641Form 4
2026-05-06MGMOption exercise6,6750Form 4
2026-03-31MGMAward / grant1,08162,966Form 4
2026-03-31ILMNAward / grant1614,566Form 4
2026-02-18VSTSAward / grant18,25350,443Form 4
2026-01-02VSTSAward / grant15,95832,190Form 4
2025-12-31MGMAward / grant1,09661,886Form 4
2025-09-30MGMAward / grant1,15460,790Form 4
2025-06-30MGMAward / grant1,16359,635Form 4
2025-06-18WGSAward / grant3,5763,576Form 4
2025-06-18WGSOption exercise12,9240Form 4
2025-06-18WGSOption exercise12,92420,129Form 4
2025-05-21ILMNAward / grant3,7804,405Form 4
2025-05-08MGMAward / grant6,6756,675Form 4
2025-05-06WGSAward / grant44,9422,856,401Form 4
2025-05-06WGSAward / grant42,5002,898,901Form 4
2025-05-06WGSAward / grant26,7982,811,459Form 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.