Updated Jul 16, 2026
Reinstra Mark has filed 3 SEC Form 4 filings across 1 company in the last 90 days — selling. Lifetime open-market sales: $15.36M.
Mark Reinstra is the General Counsel and Secretary at Roblox Corporation, where he oversees legal affairs and corporate governance. He has held multiple roles within the company, including Chief Legal Officer and Corporate Secretary.
| Role | Chief Legal Off. & Corp. Sec. |
|---|---|
| Notability | 30/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-07 | RBLX | Roblox Corp | S — Open-market sale | 1.1K | $57.94 | $64K |
| 2026-07-07 | RBLX | Roblox Corp | S — Open-market sale | 3.2K | $57.24 | $184K |
| 2026-07-07 | RBLX | Roblox Corp | S — Open-market sale | 200 | $55.77 | $11K |
| 2026-06-08 | RBLX | Roblox Corp | S — Open-market sale | 6.0K | $41.71 | $249K |
| 2026-05-22 | RBLX | Roblox Corp | S — Open-market sale | 4.9K | $46.46 | $228K |
| 2026-05-22 | RBLX | Roblox Corp | S — Open-market sale | 561 | $45.93 | $26K |
| 2026-05-22 | RBLX | Roblox Corp | S — Open-market sale | 15.4K | $45.38 | $698K |
| 2026-05-22 | RBLX | Roblox Corp | S — Open-market sale | 1.9K | $44.48 | $85K |
| 2026-04-15 | RBLX | Roblox Corp | S — Open-market sale | 100 | $58.47 | $6K |
| 2026-04-15 | RBLX | Roblox Corp | S — Open-market sale | 18.6K | $57.94 | $1.07M |
| 2026-03-03 | RBLX | Roblox Corp | A — Grant or award | 96.8K | $0.00 | |
| 2026-02-24 | RBLX | Roblox Corp | S — Open-market sale | 1.1K | $62.69 | $67K |
| 2026-02-24 | RBLX | Roblox Corp | S — Open-market sale | 10.2K | $61.89 | $631K |
| 2026-02-24 | RBLX | Roblox Corp | S — Open-market sale | 5.9K | $60.92 | $360K |
| 2026-02-19 | RBLX | Roblox Corp | S — Open-market sale | 60.0K | $63.94 | $3.84M |
| 2026-02-11 | RBLX | Roblox Corp | S — Open-market sale | 2.6K | $73.14 | $191K |
| 2026-02-11 | RBLX | Roblox Corp | S — Open-market sale | 31.7K | $72.61 | $2.30M |
| 2026-02-11 | RBLX | Roblox Corp | M — Option exercise | 118.1K | $0.00 | |
| 2025-09-30 | RBLX | Roblox Corp | A — Grant or award | 16.0K | $0.00 | |
| 2025-08-20 | RBLX | Roblox Corp | S — Open-market sale | 3.4K | $118.69 | $409K |
Mark Reinstra is the General Counsel and Secretary at Roblox Corporation, where he oversees legal affairs and corporate governance. He has held multiple roles within the company, including Chief Legal Officer and Corporate Secretary.…
3 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases () and 31 open-market sales ($15.36M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live Reinstra Mark profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.