Mark Reinstra
CIK 1835037 · View on SEC EDGAR ↗
Insider
First SEC filing: March 2, 2021 · Latest: June 8, 2026
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
0 buys (P)
23 sells (S)
Net:
$-12,112,536
+ 42 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
42 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 19, 2026 | RBLX | S 10b5-1 | 6,250 | $40.00 | $250,000 | 415,998 Direct | -1.48% | Disposed | -2.8% (price as of 2026-08-21) |
| July 6, 2026 | RBLX | S 10b5-1 | 1,100 | $57.94 | $63,734 | 422,248 Direct | -0.26% | Disposed | -32.9% (price as of 2026-08-21) |
| July 6, 2026 | RBLX | S 10b5-1 | 3,212 | $57.24 | $183,855 | 423,348 Direct | -0.75% | Disposed | -32.1% (price as of 2026-08-21) |
| July 6, 2026 | RBLX | S 10b5-1 | 200 | $55.77 | $11,154 | 426,560 Direct | -0.05% | Disposed | -30.3% (price as of 2026-08-21) |
| June 8, 2026 | RBLX | S 10b5-1 | 5,978 | $41.71 | $249,342 | 426,760 Direct | -1.38% | Disposed | -6.8% (price as of 2026-08-21) |
| May 21, 2026 | RBLX | S 10b5-1 | 561 | $45.93 | $25,767 | 437,637 Direct | -0.13% | Disposed | -15.3% (price as of 2026-08-21) |
| May 21, 2026 | RBLX | S 10b5-1 | 4,899 | $46.46 | $227,608 | 432,738 Direct | -1.12% | Disposed | -16.3% (price as of 2026-08-21) |
| May 20, 2026 | RBLX | S | 1,903 | $44.48 | $84,645 | 453,570 Direct | -0.42% | Disposed | -12.6% (price as of 2026-08-21) |
| May 20, 2026 | RBLX | S | 15,372 | $45.38 | $697,581 | 438,198 Direct | -3.39% | Disposed | -14.3% (price as of 2026-08-21) |
| April 13, 2026 | RBLX | S | 18,553 | $57.94 | $1,074,961 | 455,573 Direct | -3.91% | Disposed | -32.9% (price as of 2026-08-21) |
| April 13, 2026 | RBLX | S | 100 | $58.47 | $5,847 | 455,473 Direct | -0.02% | Disposed | -33.5% (price as of 2026-08-21) |
| Feb. 20, 2026 | RBLX | S | 5,913 | $60.92 | $360,220 | 388,409 Direct | -1.50% | Disposed | -36.2% (price as of 2026-08-21) |
| Feb. 20, 2026 | RBLX | S | 10,203 | $61.89 | $631,464 | 378,206 Direct | -2.63% | Disposed | -37.2% (price as of 2026-08-21) |
| Feb. 20, 2026 | RBLX | S | 1,070 | $62.69 | $67,078 | 377,136 Direct | -0.28% | Disposed | -38.0% (price as of 2026-08-21) |
| Feb. 13, 2026 | RBLX | S | 60,000 | $63.94 | $3,836,400 | 394,322 Direct | -13.21% | Disposed | -39.2% (price as of 2026-08-21) |
| Feb. 10, 2026 | RBLX | S | 31,705 | $72.61 | $2,302,100 | 456,937 Direct | -6.49% | Disposed | -46.4% (price as of 2026-08-21) |
| Feb. 10, 2026 | RBLX | S | 2,615 | $73.14 | $191,261 | 454,322 Direct | -0.57% | Disposed | -46.8% (price as of 2026-08-21) |
| Nov. 20, 2025 | RBLX | S | 2,796 | $93.36 | $261,035 | 384,518 Direct | -0.72% | Disposed | -58.3% (price as of 2026-08-21) |
| Nov. 20, 2025 | RBLX | S | 2,901 | $94.30 | $273,564 | 381,617 Direct | -0.75% | Disposed | -58.8% (price as of 2026-08-21) |
| Nov. 20, 2025 | RBLX | S | 4,995 | $95.30 | $476,024 | 376,622 Direct | -1.31% | Disposed | -59.2% (price as of 2026-08-21) |
| Nov. 20, 2025 | RBLX | S | 3,960 | $96.21 | $380,992 | 372,662 Direct | -1.05% | Disposed | -59.6% (price as of 2026-08-21) |
| Nov. 20, 2025 | RBLX | S | 2,130 | $97.07 | $206,759 | 370,532 Direct | -0.57% | Disposed | -59.9% (price as of 2026-08-21) |
| Nov. 5, 2025 | RBLX | S 10b5-1 | 2,401 | $104.60 | $251,145 | 387,314 Direct | -0.62% | Disposed | -62.8% (price as of 2026-08-21) |
| Aug. 20, 2025 | RBLX | S | 1,236 | $115.96 | $143,327 | 388,253 Direct | -0.32% | Disposed | -66.5% (price as of 2026-08-21) |
| Aug. 20, 2025 | RBLX | S | 4,868 | $117.05 | $569,799 | 383,385 Direct | -1.25% | Disposed | -66.8% (price as of 2026-08-21) |
| Aug. 20, 2025 | RBLX | S | 6,271 | $118.04 | $740,229 | 377,114 Direct | -1.64% | Disposed | -67.1% (price as of 2026-08-21) |
| Aug. 20, 2025 | RBLX | S | 3,445 | $118.69 | $408,887 | 373,669 Direct | -0.91% | Disposed | -67.2% (price as of 2026-08-21) |
| June 16, 2025 | RBLX | S 10b5-1 | 150,000 | $99.75 | $14,962,500 | 389,489 Direct | -27.80% | Disposed | -61.0% (price as of 2026-08-21) |
| May 27, 2025 | RBLX | S 10b5-1 | 50,000 | $84.64 | $4,232,000 | 389,489 Direct | -11.38% | Disposed | -54.1% (price as of 2026-08-21) |
| May 20, 2025 | RBLX | S | 14,649 | $80.61 | $1,180,856 | 390,692 Direct | -3.61% | Disposed | -51.8% (price as of 2026-08-21) |
| May 20, 2025 | RBLX | S | 1,203 | $81.23 | $97,720 | 389,489 Direct | -0.31% | Disposed | -52.1% (price as of 2026-08-21) |
| Feb. 20, 2025 | RBLX | S | 16,432 | $61.39 | $1,008,760 | 322,774 Direct | -4.84% | Disposed | -36.7% (price as of 2026-08-21) |
| Feb. 11, 2025 | RBLX | S | 19,525 | $65.94 | $1,287,478 | 339,206 Direct | -5.44% | Disposed | -41.0% (price as of 2026-08-21) |
| Jan. 22, 2025 | RBLX | S 10b5-1 | 23,400 | $65.87 | $1,541,358 | 281,761 Direct | -7.67% | Disposed | -41.0% (price as of 2026-08-21) |
| Jan. 22, 2025 | RBLX | S 10b5-1 | 600 | $66.49 | $39,894 | 281,161 Direct | -0.21% | Disposed | -41.5% (price as of 2026-08-21) |
| Jan. 16, 2025 | RBLX | S 10b5-1 | 50,000 | $64.98 | $3,249,000 | 281,161 Direct | -15.10% | Disposed | -40.2% (price as of 2026-08-21) |
| Dec. 23, 2024 | RBLX | S 10b5-1 | 16,200 | $59.51 | $964,062 | 285,961 Direct | -5.36% | Disposed | -34.6% (price as of 2026-08-21) |
| Dec. 23, 2024 | RBLX | S 10b5-1 | 7,800 | $60.24 | $469,872 | 278,161 Direct | -2.73% | Disposed | -35.4% (price as of 2026-08-21) |
| Dec. 11, 2024 | RBLX | S 10b5-1 | 5,000 | $60.00 | $300,000 | 278,161 Direct | -1.77% | Disposed | -35.2% (price as of 2026-08-21) |
| Nov. 26, 2024 | RBLX | S 10b5-1 | 2,000 | $50.00 | $100,000 | 278,161 Direct | -0.71% | Disposed | -22.2% (price as of 2026-08-21) |
| Nov. 25, 2024 | RBLX | S 10b5-1 | 6,800 | $48.37 | $328,916 | 278,361 Direct | -2.38% | Disposed | -19.6% (price as of 2026-08-21) |
| Nov. 25, 2024 | RBLX | S 10b5-1 | 200 | $49.06 | $9,812 | 278,161 Direct | -0.07% | Disposed | -20.7% (price as of 2026-08-21) |
| Nov. 20, 2024 | RBLX | S | 13,701 | $51.36 | $703,683 | 280,940 Direct | -4.65% | Disposed | -24.3% (price as of 2026-08-21) |
| Nov. 20, 2024 | RBLX | S | 2,779 | $51.77 | $143,869 | 278,161 Direct | -0.99% | Disposed | -24.9% (price as of 2026-08-21) |
| Nov. 4, 2024 | RBLX | S 10b5-1 | 3,500 | $50.31 | $176,085 | 332,509 Direct | -1.04% | Disposed | -22.7% (price as of 2026-08-21) |
| Nov. 4, 2024 | RBLX | S 10b5-1 | 1,400 | $51.56 | $72,184 | 331,109 Direct | -0.42% | Disposed | -24.6% (price as of 2026-08-21) |
| Nov. 4, 2024 | RBLX | S 10b5-1 | 4,100 | $52.89 | $216,849 | 327,009 Direct | -1.24% | Disposed | -26.5% (price as of 2026-08-21) |
| Sept. 23, 2024 | RBLX | S 10b5-1 | 16,300 | $45.55 | $742,465 | 327,709 Direct | -4.74% | Disposed | -14.6% (price as of 2026-08-21) |
| Sept. 23, 2024 | RBLX | S 10b5-1 | 700 | $46.29 | $32,403 | 327,009 Direct | -0.21% | Disposed | -16.0% (price as of 2026-08-21) |
| Aug. 20, 2024 | RBLX | S | 16,553 | $40.35 | $667,914 | 326,103 Direct | -4.83% | Disposed | -3.6% (price as of 2026-08-21) |
| Aug. 20, 2024 | RBLX | S | 26 | $40.72 | $1,059 | 326,077 Direct | -0.01% | Disposed | -4.5% (price as of 2026-08-21) |
| Aug. 19, 2024 | RBLX | S 10b5-1 | 16,837 | $40.47 | $681,393 | 342,819 Direct | -4.68% | Disposed | -3.9% (price as of 2026-08-21) |
| Aug. 19, 2024 | RBLX | S 10b5-1 | 163 | $40.81 | $6,652 | 342,656 Direct | -0.05% | Disposed | -4.7% (price as of 2026-08-21) |
| Aug. 15, 2024 | RBLX | S 10b5-1 | 12,000 | $40.00 | $480,000 | 342,656 Direct | -3.38% | Disposed | -2.8% (price as of 2026-08-21) |
| Aug. 13, 2024 | RBLX | S 10b5-1 | 8,300 | $38.86 | $322,538 | 344,356 Direct | -2.35% | Disposed | 0.1% (price as of 2026-08-21) |
| Aug. 13, 2024 | RBLX | S 10b5-1 | 1,700 | $39.33 | $66,861 | 342,656 Direct | -0.49% | Disposed | -1.1% (price as of 2026-08-21) |
| May 22, 2024 | RBLX | S 10b5-1 | 4,000 | $33.19 | $132,760 | 342,656 Direct | -1.15% | Disposed | 17.2% (price as of 2026-08-21) |
| May 21, 2024 | RBLX | S | 16,797 | $32.56 | $546,910 | 342,656 Direct | -4.67% | Disposed | 19.4% (price as of 2026-08-21) |
Showing latest 100 of 190 transactions
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| March 1, 2026 | RBLX | Performance Stock Unit | Class A Common Stock | — | — | 104,236 | Acquired |
| Feb. 9, 2026 | RBLX | Performance Stock Unit | Class A Common Stock (118,110) | — | — | 118,110 | Disposed |
| June 16, 2025 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (150,000) | $3.40 | Dec. 9, 2029 | 150,000 | Disposed |
| May 27, 2025 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (50,000) | $3.40 | Dec. 9, 2029 | 50,000 | Disposed |
| March 7, 2025 | RBLX | Performance Stock Unit | Class A Common Stock | — | — | 87,912 | Acquired |
| Feb. 10, 2025 | RBLX | Performance Stock Unit | Class A Common Stock (77,570) | — | — | 77,570 | Disposed |
| Jan. 22, 2025 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (24,000) | $3.40 | Dec. 9, 2030 | 24,000 | Disposed |
| Jan. 16, 2025 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (50,000) | $3.40 | Dec. 9, 2030 | 50,000 | Disposed |
| Dec. 23, 2024 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (24,000) | $3.40 | Dec. 9, 2030 | 24,000 | Disposed |
| Dec. 11, 2024 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (5,000) | $3.40 | Dec. 9, 2030 | 5,000 | Disposed |
| Nov. 26, 2024 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (2,000) | $3.40 | Dec. 9, 2030 | 2,000 | Disposed |
| Nov. 25, 2024 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (7,000) | $3.40 | Dec. 9, 2030 | 7,000 | Disposed |
| Nov. 4, 2024 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (9,000) | $3.40 | Dec. 9, 2030 | 9,000 | Disposed |
| Sept. 23, 2024 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (17,000) | $3.40 | Dec. 9, 2030 | 17,000 | Disposed |
| Aug. 19, 2024 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (17,000) | $3.40 | Dec. 9, 2030 | 17,000 | Disposed |
| Aug. 15, 2024 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (12,000) | $3.40 | Dec. 9, 2030 | 12,000 | Disposed |
| Aug. 13, 2024 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (10,000) | $3.40 | Dec. 9, 2030 | 10,000 | Disposed |
| May 22, 2024 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (4,000) | $3.40 | Dec. 9, 2030 | 4,000 | Disposed |
| April 17, 2024 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (4,000) | $3.40 | Dec. 9, 2030 | 4,000 | Disposed |
| March 20, 2024 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (4,000) | $3.40 | Dec. 9, 2030 | 4,000 | Disposed |
| March 1, 2024 | RBLX | Performance Stock Unit | Class A Common Stock | — | — | 118,110 | Acquired |
| Feb. 21, 2024 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (4,000) | $3.40 | Dec. 9, 2030 | 4,000 | Disposed |
| Jan. 17, 2024 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (4,000) | $3.40 | Dec. 9, 2030 | 4,000 | Disposed |
| Dec. 26, 2023 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (29,368) | $3.40 | Dec. 9, 2030 | 29,368 | Disposed |
| Dec. 20, 2023 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (4,000) | $3.40 | Dec. 9, 2030 | 4,000 | Disposed |
| Nov. 21, 2023 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (4,000) | $3.40 | Dec. 9, 2030 | 4,000 | Disposed |
| Oct. 18, 2023 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (4,000) | $3.40 | Dec. 9, 2030 | 4,000 | Disposed |
| July 19, 2023 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (4,000) | $3.40 | Dec. 9, 2030 | 4,000 | Disposed |
| June 21, 2023 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (4,000) | $3.40 | Dec. 9, 2030 | 4,000 | Disposed |
| May 26, 2023 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (14,000) | $3.40 | Dec. 9, 2030 | 14,000 | Disposed |
| April 13, 2023 | RBLX | Performance Stock Unit | Class A Common Stock | — | — | 88,794 | Acquired |
| Feb. 23, 2023 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (12,500) | $3.40 | Dec. 9, 2030 | 12,500 | Disposed |
| Nov. 15, 2022 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (12,500) | $3.40 | Dec. 9, 2030 | 12,500 | Disposed |
| April 8, 2022 | RBLX | Performance Stock Unit | Class A Common Stock | — | — | 49,859 | Acquired |
| Feb. 4, 2022 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (12,702) | $3.40 | Dec. 9, 2030 | 12,702 | Disposed |
| Jan. 7, 2022 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (16,666) | $3.40 | Dec. 9, 2030 | 16,666 | Disposed |
| June 7, 2021 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (5,000) | $3.40 | Dec. 9, 2030 | 5,000 | Disposed |
| March 15, 2021 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (40,000) | $3.40 | Dec. 9, 2030 | 40,000 | Disposed |
| March 10, 2021 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (150,000) | $3.40 | Dec. 9, 2030 | 150,000 | Disposed |
| March 5, 2021 | RBLX | Stock Option (Right to Buy) | Class A Common Stock (58,736) | $3.40 | Dec. 9, 2030 | 58,736 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 4 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| March 2, 2021 | RBLX | Class A Common Stock | 202,410 | Indirect |
| March 2, 2021 | RBLX | Class A Common Stock | 40,000 | Indirect |
| March 2, 2021 | RBLX | Class A Common Stock | 40,000 | Indirect |
| March 2, 2021 | RBLX | Stock Option (Right to Buy)→ Class A Common Stock (800,000) | 800,000 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2024 | $715,000 | — | — | — | — | — | — | $7,706,077 |
| 2023 | $698,750 | — | — | — | — | — | — | $7,821,573 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.