Reinstra Mark

Officer · RBLX

As of 2026-09-16, Reinstra Mark has 66 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.

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: $18.6MIndirect: $5.5M$24.1Mas of 2026-09-16
  • Direct $18.6M
  • Indirect $5.5M
RBLXdirect392,291 sh$18.6M
RBLXindirect116,630 sh$5.5M

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

RBLX · 66 trades
2026-09-08: Sale, 3,753 sh ($169K)2026-09-08: Sale, 1,920 sh ($85K)2026-09-08: Sale, 100 sh ($5K)2026-08-20: Sale, 13,020 sh ($492K)2026-08-20: Sale, 4,914 sh ($189K)2026-08-19: Sale, 6,250 sh ($250K)2026-07-06: Sale, 3,212 sh ($184K)2026-07-06: Sale, 1,100 sh ($64K)2026-07-06: Sale, 200 sh ($11K)2026-06-08: Sale, 5,978 sh ($249K)2026-05-21: Sale, 4,899 sh ($228K)2026-05-21: Sale, 561 sh ($26K)2026-05-20: Sale, 15,372 sh ($698K)2026-05-20: Sale, 1,903 sh ($85K)2026-04-13: Sale, 18,553 sh ($1.1M)2026-04-13: Sale, 100 sh ($6K)2026-03-01: Award / grant, 104,236 sh ($0)2026-03-01: Award / grant, 96,790 sh ($0)2026-02-20: Sale, 10,203 sh ($631K)2026-02-20: Sale, 5,913 sh ($360K)2026-02-20: Sale, 1,070 sh ($67K)2026-02-13: Sale, 60,000 sh ($3.8M)2026-02-10: Sale, 31,705 sh ($2.3M)2026-02-10: Sale, 2,615 sh ($191K)2026-02-09: Option exercise, 118,110 sh ($0)2026-02-09: Option exercise, 118,110 sh ($0)2025-11-20: Sale, 4,995 sh ($476K)2025-11-20: Sale, 3,960 sh ($381K)2025-11-20: Sale, 2,901 sh ($274K)2025-11-20: Sale, 2,796 sh ($261K)2025-11-20: Sale, 2,130 sh ($207K)2025-11-05: Sale, 2,401 sh ($251K)2025-09-30: Award / grant, 16,046 sh ($0)2025-08-20: Sale, 6,271 sh ($740K)2025-08-20: Sale, 4,868 sh ($570K)2025-08-20: Sale, 3,445 sh ($409K)2025-08-20: Sale, 1,236 sh ($143K)2025-08-05: Gift, 2,500 sh ($0)2025-06-16: Sale, 150,000 sh ($15.0M)2025-06-16: Option exercise, 150,000 sh ($511K)2025-06-16: Option exercise, 150,000 sh ($0)2025-05-27: Sale, 50,000 sh ($4.2M)2025-05-27: Option exercise, 50,000 sh ($170K)2025-05-27: Option exercise, 50,000 sh ($0)2025-05-20: Sale, 14,649 sh ($1.2M)2025-05-20: Sale, 1,203 sh ($98K)2025-03-07: Award / grant, 87,912 sh ($0)2025-03-07: Award / grant, 81,634 sh ($0)2025-02-20: Sale, 16,432 sh ($1.0M)2025-02-11: Sale, 19,525 sh ($1.3M)2025-02-10: Option exercise, 77,570 sh ($0)2025-02-10: Option exercise, 77,570 sh ($0)2025-01-22: Sale, 23,400 sh ($1.5M)2025-01-22: Option exercise, 24,000 sh ($82K)2025-01-22: Sale, 600 sh ($40K)2025-01-22: Option exercise, 24,000 sh ($0)2025-01-16: Sale, 50,000 sh ($3.2M)2025-01-16: Option exercise, 50,000 sh ($170K)2025-01-16: Option exercise, 50,000 sh ($0)2024-12-23: Sale, 16,200 sh ($964K)2024-12-23: Sale, 7,800 sh ($470K)2024-12-23: Option exercise, 24,000 sh ($82K)2024-12-23: Option exercise, 24,000 sh ($0)2024-12-11: Sale, 5,000 sh ($300K)2024-12-11: Option exercise, 5,000 sh ($17K)2024-12-11: Option exercise, 5,000 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-09-08RBLXSale3,753 @ $45.03$169K−0.9% of holding392,391Form 4
2026-09-08RBLXSale1,920 @ $44.30$85K−0.5% of holding396,144Form 4
2026-09-08RBLXSale100 @ $45.73$5K−0.0% of holding392,291Form 4
2026-08-20RBLXSale13,020 @ $37.78$492K−3.1% of holding402,978Form 4
2026-08-20RBLXSale4,914 @ $38.45$189K−1.2% of holding398,064Form 4
2026-08-19RBLXSale6,250 @ $40.00$250K−1.5% of holding415,998Form 4
2026-07-06RBLXSale3,212 @ $57.24$184K−0.8% of holding423,348Form 4
2026-07-06RBLXSale1,100 @ $57.94$64K−0.3% of holding422,248Form 4
2026-07-06RBLXSale200 @ $55.77$11K−0.0% of holding426,560Form 4
2026-06-08RBLXSale5,978 @ $41.71$249K−1.4% of holding426,760Form 4
2026-05-21RBLXSale4,899 @ $46.46$228K−1.1% of holding432,738Form 4
2026-05-21RBLXSale561 @ $45.93$26K−0.1% of holding437,637Form 4
2026-05-20RBLXSale15,372 @ $45.38$698K−3.4% of holding438,198Form 4
2026-05-20RBLXSale1,903 @ $44.48$85K−0.4% of holding453,570Form 4
2026-04-13RBLXSale18,553 @ $57.94$1.1M−3.9% of holding455,573Form 4
2026-04-13RBLXSale100 @ $58.47$6K−0.0% of holding455,473Form 4
2026-02-20RBLXSale10,203 @ $61.89$631K−2.6% of holding378,206Form 4
2026-02-20RBLXSale5,913 @ $60.92$360K−1.5% of holding388,409Form 4
2026-02-20RBLXSale1,070 @ $62.69$67K−0.3% of holding377,136Form 4
2026-02-13RBLXSale60,000 @ $63.94$3.8M−13.2% of holding394,322Form 4
2026-02-10RBLXSale31,705 @ $72.61$2.3M−6.5% of holding456,937Form 4
2026-02-10RBLXSale2,615 @ $73.14$191K−0.6% of holding454,322Form 4
2025-11-20RBLXSale4,995 @ $95.30$476K−1.3% of holding376,622Form 4
2025-11-20RBLXSale3,960 @ $96.21$381K−1.1% of holding372,662Form 4
2025-11-20RBLXSale2,901 @ $94.30$274K−0.8% of holding381,617Form 4
2025-11-20RBLXSale2,796 @ $93.36$261K−0.7% of holding384,518Form 4
2025-11-20RBLXSale2,130 @ $97.07$207K−0.6% of holding370,532Form 4
2025-11-05RBLXSale2,401 @ $104.60$251K−0.6% of holding387,314Form 4
2025-08-20RBLXSale6,271 @ $118.04$740K−1.6% of holding377,114Form 4
2025-08-20RBLXSale4,868 @ $117.05$570K−1.3% of holding383,385Form 4
2025-08-20RBLXSale3,445 @ $118.69$409K−0.9% of holding373,669Form 4
2025-08-20RBLXSale1,236 @ $115.96$143K−0.3% of holding388,253Form 4
2025-06-16RBLXSale150,000 @ $99.75$15.0M−27.8% of holding389,489Form 4
2025-05-27RBLXSale50,000 @ $84.64$4.2M−11.4% of holding389,489Form 4
2025-05-20RBLXSale14,649 @ $80.61$1.2M−3.6% of holding390,692Form 4
2025-05-20RBLXSale1,203 @ $81.23$98K−0.3% of holding389,489Form 4
2025-02-20RBLXSale16,432 @ $61.39$1.0M−4.8% of holding322,774Form 4
2025-02-11RBLXSale19,525 @ $65.94$1.3M−5.4% of holding339,206Form 4
2025-01-22RBLXSale23,400 @ $65.87$1.5M−7.7% of holding281,761Form 4
2025-01-22RBLXSale600 @ $66.49$40K−0.2% of holding281,161Form 4
2025-01-16RBLXSale50,000 @ $64.98$3.2M−15.1% of holding281,161Form 4
2024-12-23RBLXSale16,200 @ $59.51$964K−5.4% of holding285,961Form 4
2024-12-23RBLXSale7,800 @ $60.24$470K−2.7% of holding278,161Form 4
2024-12-11RBLXSale5,000 @ $60.00$300K−1.8% of holding278,161Form 4
22 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-03-01RBLXAward / grant104,236104,236Form 4
2026-03-01RBLXAward / grant96,790474,126Form 4
2026-02-09RBLXOption exercise118,1100Form 4
2026-02-09RBLXOption exercise118,110488,642Form 4
2025-09-30RBLXAward / grant16,046389,715Form 4
2025-08-05RBLXGift2,500116,630Form 4
2025-06-16RBLXOption exercise150,000539,489Form 4
2025-06-16RBLXOption exercise150,00031,528Form 4
2025-05-27RBLXOption exercise50,000439,489Form 4
2025-05-27RBLXOption exercise50,000181,528Form 4
2025-03-07RBLXAward / grant87,91287,912Form 4
2025-03-07RBLXAward / grant81,634405,341Form 4
2025-02-10RBLXOption exercise77,5700Form 4
2025-02-10RBLXOption exercise77,570358,731Form 4
2025-01-22RBLXOption exercise24,000305,161Form 4
2025-01-22RBLXOption exercise24,000231,528Form 4
2025-01-16RBLXOption exercise50,000331,161Form 4
2025-01-16RBLXOption exercise50,000255,528Form 4
2024-12-23RBLXOption exercise24,000302,161Form 4
2024-12-23RBLXOption exercise24,000305,528Form 4
2024-12-11RBLXOption exercise5,000283,161Form 4
2024-12-11RBLXOption exercise5,000329,528Form 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.