Baszucki David
Director · Officer · Ten-percent owner · RBLX
As of 2026-09-16, Baszucki David has 257 Form 4 transactions on record across 1 company — 48 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
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
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-20 | RBLX | Sale | 38,208 @ $37.78 | $1.4M | −4.5% of holding | 814,006 | Form 4 |
| 2026-08-20 | RBLX | Sale | 14,360 @ $38.44 | $552K | −1.8% of holding | 799,646 | Form 4 |
| 2026-05-20 | RBLX | Sale | 45,042 @ $45.36 | $2.0M | −5.0% of holding | 853,114 | Form 4 |
| 2026-05-20 | RBLX | Sale | 4,686 @ $44.40 | $208K | −0.5% of holding | 898,156 | Form 4 |
| 2026-05-20 | RBLX | Sale | 900 @ $45.89 | $41K | −0.1% of holding | 852,214 | Form 4 |
| 2026-02-20 | RBLX | Sale | 6,019 @ $61.93 | $373K | −0.7% of holding | 801,309 | Form 4 |
| 2026-02-20 | RBLX | Sale | 4,045 @ $60.97 | $247K | −0.5% of holding | 807,328 | Form 4 |
| 2026-02-20 | RBLX | Sale | 770 @ $62.76 | $48K | −0.1% of holding | 800,539 | Form 4 |
| 2026-02-10 | RBLX | Sale | 250,482 @ $72.62 | $18.2M | −23.1% of holding | 833,160 | Form 4 |
| 2026-02-10 | RBLX | Sale | 21,787 @ $73.13 | $1.6M | −2.6% of holding | 811,373 | Form 4 |
| 2026-01-07 | RBLX | Sale | 24,514 @ $76.22 | $1.9M | −53.2% of holding | 21,548 | Form 4 |
| 2026-01-07 | RBLX | Sale | 21,410 @ $76.78 | $1.6M | −99.4% of holding | 138 | Form 4 |
| 2026-01-07 | RBLX | Sale | 11,088 @ $76.22 | $845K | −1.2% of holding | 884,750 | Form 4 |
| 2026-01-07 | RBLX | Sale | 9,684 @ $76.78 | $744K | −1.1% of holding | 875,066 | Form 4 |
| 2026-01-07 | RBLX | Sale | 138 @ $77.46 | $11K | −100.0% of holding | 0 | Form 4 |
| 2026-01-07 | RBLX | Sale | 62 @ $77.46 | $5K | −0.0% of holding | 875,004 | Form 4 |
| 2025-12-18 | RBLX | Sale | 20,022 @ $83.97 | $1.7M | −43.5% of holding | 26,040 | Form 4 |
| 2025-12-18 | RBLX | Sale | 17,381 @ $85.02 | $1.5M | −66.7% of holding | 8,659 | Form 4 |
| 2025-12-18 | RBLX | Sale | 9,056 @ $83.97 | $760K | −0.9% of holding | 976,366 | Form 4 |
| 2025-12-18 | RBLX | Sale | 8,521 @ $85.86 | $732K | −98.4% of holding | 138 | Form 4 |
| 2025-12-18 | RBLX | Sale | 7,862 @ $85.02 | $668K | −0.8% of holding | 968,504 | Form 4 |
| 2025-12-18 | RBLX | Sale | 3,854 @ $85.86 | $331K | −0.4% of holding | 964,650 | Form 4 |
| 2025-12-18 | RBLX | Sale | 138 @ $87.13 | $12K | −100.0% of holding | 0 | Form 4 |
| 2025-12-18 | RBLX | Sale | 62 @ $87.13 | $5K | −0.0% of holding | 964,588 | Form 4 |
| 2025-11-20 | RBLX | Sale | 3,550 @ $95.67 | $340K | −1.8% of holding | 193,084 | Form 4 |
| 2025-11-20 | RBLX | Sale | 2,467 @ $94.58 | $233K | −1.2% of holding | 196,634 | Form 4 |
| 2025-11-20 | RBLX | Sale | 2,310 @ $96.70 | $223K | −1.2% of holding | 190,774 | Form 4 |
| 2025-11-20 | RBLX | Sale | 2,057 @ $93.45 | $192K | −1.0% of holding | 199,101 | Form 4 |
| 2025-11-20 | RBLX | Sale | 200 @ $97.26 | $19K | −0.1% of holding | 190,574 | Form 4 |
| 2025-11-11 | RBLX | Sale | 24,558 @ $104.85 | $2.6M | −100.0% of holding | 0 | Form 4 |
| 2025-11-11 | RBLX | Sale | 21,504 @ $104.17 | $2.2M | −46.7% of holding | 24,558 | Form 4 |
| 2025-11-11 | RBLX | Sale | 11,108 @ $104.85 | $1.2M | −1.0% of holding | 1,054,172 | Form 4 |
| 2025-11-11 | RBLX | Sale | 9,726 @ $104.17 | $1.0M | −0.9% of holding | 1,065,280 | Form 4 |
| 2025-08-20 | RBLX | Sale | 4,299 @ $118.00 | $507K | −2.1% of holding | 203,450 | Form 4 |
| 2025-08-20 | RBLX | Sale | 3,145 @ $116.99 | $368K | −1.5% of holding | 207,749 | Form 4 |
| 2025-08-20 | RBLX | Sale | 2,292 @ $118.70 | $272K | −1.1% of holding | 201,158 | Form 4 |
| 2025-08-20 | RBLX | Sale | 665 @ $115.99 | $77K | −0.3% of holding | 210,894 | Form 4 |
| 2025-08-05 | RBLX | Sale | 875 @ $126.72 | $111K | −100.0% of holding | 0 | Form 4 |
| 2025-06-26 | RBLX | Sale | 139,507 @ $105.19 | $14.7M | −39.7% of holding | 211,559 | Form 4 |
| 2025-06-26 | RBLX | Sale | 27,901 @ $105.19 | $2.9M | −97.0% of holding | 875 | Form 4 |
| 2025-06-25 | RBLX | Sale | 47,928 @ $105.14 | $5.0M | −18.5% of holding | 211,559 | Form 4 |
| 2025-06-25 | RBLX | Sale | 9,586 @ $105.14 | $1.0M | −91.6% of holding | 875 | Form 4 |
| 2025-06-24 | RBLX | Sale | 192,617 @ $105.13 | $20.3M | −47.7% of holding | 211,559 | Form 4 |
| 2025-06-24 | RBLX | Sale | 38,523 @ $105.13 | $4.0M | −97.8% of holding | 875 | Form 4 |
| 2025-06-17 | RBLX | Sale | 454,963 @ $100.61 | $45.8M | −68.3% of holding | 211,559 | Form 4 |
| 2025-06-17 | RBLX | Sale | 90,992 @ $100.61 | $9.2M | −99.0% of holding | 875 | Form 4 |
| 2025-06-17 | RBLX | Sale | 82,719 @ $100.61 | $8.3M | −85.1% of holding | 14,485 | Form 4 |
| 2025-06-16 | RBLX | Sale | 232,537 @ $100.50 | $23.4M | −52.4% of holding | 211,559 | Form 4 |
| 2025-06-16 | RBLX | Sale | 46,508 @ $100.50 | $4.7M | −98.2% of holding | 875 | Form 4 |
| 2025-06-16 | RBLX | Sale | 42,279 @ $100.50 | $4.2M | −30.3% of holding | 97,201 | Form 4 |
| 2025-06-11 | RBLX | Sale | 60,047 @ $95.97 | $5.8M | −22.1% of holding | 211,559 | Form 4 |
| 2025-06-11 | RBLX | Sale | 12,009 @ $95.97 | $1.2M | −93.2% of holding | 875 | Form 4 |
| 2025-06-11 | RBLX | Sale | 10,917 @ $95.97 | $1.0M | −7.3% of holding | 139,480 | Form 4 |
| 2025-06-11 | RBLX | Sale | 12,009 @ $0.00 | $0 | −2.9% of holding | 402,077 | Form 4 |
| 2025-06-06 | RBLX | Sale | 627,453 @ $96.04 | $60.3M | −74.8% of holding | 211,559 | Form 4 |
| 2025-06-06 | RBLX | Sale | 125,491 @ $96.04 | $12.1M | −99.3% of holding | 875 | Form 4 |
| 2025-06-06 | RBLX | Sale | 114,081 @ $96.04 | $11.0M | −43.1% of holding | 150,397 | Form 4 |
| 2025-06-05 | RBLX | Sale | 687,500 @ $92.26 | $63.4M | −76.5% of holding | 211,559 | Form 4 |
| 2025-06-05 | RBLX | Sale | 137,500 @ $92.26 | $12.7M | −99.4% of holding | 875 | Form 4 |
| 2025-06-05 | RBLX | Sale | 124,998 @ $92.26 | $11.5M | −32.1% of holding | 264,478 | Form 4 |
| 2025-06-02 | RBLX | Sale | 643,566 @ $87.92 | $56.6M | −71.6% of holding | 255,493 | Form 4 |
| 2025-06-02 | RBLX | Sale | 128,714 @ $87.92 | $11.3M | −93.0% of holding | 9,661 | Form 4 |
| 2025-06-02 | RBLX | Sale | 117,011 @ $87.92 | $10.3M | −22.7% of holding | 397,463 | Form 4 |
| 2025-06-02 | RBLX | Sale | 43,934 @ $88.76 | $3.9M | −17.2% of holding | 211,559 | Form 4 |
| 2025-06-02 | RBLX | Sale | 8,786 @ $88.76 | $780K | −90.9% of holding | 875 | Form 4 |
| 2025-06-02 | RBLX | Sale | 7,987 @ $88.76 | $709K | −2.0% of holding | 389,476 | Form 4 |
| 2025-05-20 | RBLX | Sale | 9,593 @ $80.61 | $773K | −4.3% of holding | 212,390 | Form 4 |
| 2025-05-20 | RBLX | Sale | 831 @ $81.21 | $67K | −0.4% of holding | 211,559 | Form 4 |
| 2025-05-13 | RBLX | Sale | 429,219 @ $75.00 | $32.2M | −54.2% of holding | 362,214 | Form 4 |
| 2025-05-13 | RBLX | Sale | 140,231 @ $75.72 | $10.6M | −38.7% of holding | 221,983 | Form 4 |
| 2025-05-13 | RBLX | Sale | 85,843 @ $75.00 | $6.4M | −74.8% of holding | 28,921 | Form 4 |
| 2025-05-13 | RBLX | Sale | 78,038 @ $75.00 | $5.9M | −12.6% of holding | 539,970 | Form 4 |
| 2025-05-13 | RBLX | Sale | 28,046 @ $75.72 | $2.1M | −97.0% of holding | 875 | Form 4 |
| 2025-05-13 | RBLX | Sale | 25,496 @ $75.72 | $1.9M | −4.7% of holding | 514,474 | Form 4 |
| 2025-05-12 | RBLX | Sale | 118,051 @ $74.44 | $8.8M | −34.7% of holding | 221,983 | Form 4 |
| 2025-05-12 | RBLX | Sale | 23,610 @ $74.44 | $1.8M | −96.4% of holding | 875 | Form 4 |
| 2025-05-12 | RBLX | Sale | 21,464 @ $74.44 | $1.6M | −3.4% of holding | 618,008 | Form 4 |
| 2025-05-05 | RBLX | Sale | 780,910 @ $71.95 | $56.2M | −48.9% of holding | 816,075 | Form 4 |
| 2025-05-05 | RBLX | Sale | 594,092 @ $72.50 | $43.1M | −72.8% of holding | 221,983 | Form 4 |
| 2025-05-05 | RBLX | Sale | 156,181 @ $71.95 | $11.2M | −56.6% of holding | 119,692 | Form 4 |
125 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-04-02 | RBLX | Conversion | 2,687,511 | 3,493,765 | Form 4 |
| 2026-04-02 | RBLX | Conversion | 2,687,511 | 19,194,993 | Form 4 |
| 2026-03-01 | RBLX | Award / grant | 613,822 | 613,822 | Form 4 |
| 2026-03-01 | RBLX | Award / grant | 102,303 | 902,842 | Form 4 |
| 2026-02-09 | RBLX | Option exercise | 893,068 | 1,083,642 | Form 4 |
| 2026-02-09 | RBLX | Option exercise | 893,068 | 0 | Form 4 |
| 2026-01-07 | RBLX | Gift | 46,062 | 46,062 | Form 4 |
| 2026-01-07 | RBLX | Gift | 22,688 | 852,316 | Form 4 |
| 2026-01-07 | RBLX | Gift | 46,062 | 806,254 | Form 4 |
| 2025-12-18 | RBLX | Gift | 46,062 | 895,838 | Form 4 |
| 2025-12-18 | RBLX | Gift | 46,062 | 46,062 | Form 4 |
| 2025-12-18 | RBLX | Gift | 22,688 | 941,900 | Form 4 |
| 2025-11-11 | RBLX | Gift | 46,062 | 985,422 | Form 4 |
| 2025-11-11 | RBLX | Gift | 22,688 | 1,031,484 | Form 4 |
| 2025-11-11 | RBLX | Gift | 46,062 | 46,062 | Form 4 |
| 2025-08-14 | RBLX | Gift | 150,000 | 1,075,006 | Form 4 |
| 2025-08-07 | RBLX | Conversion | 1,143,191 | 1,225,006 | Form 4 |
| 2025-08-07 | RBLX | Conversion | 1,143,191 | 21,882,504 | Form 4 |
| 2025-06-26 | RBLX | Option exercise | 139,507 | 351,066 | Form 4 |
| 2025-06-26 | RBLX | Gift | 13,950 | 109,716 | Form 4 |
| 2025-06-26 | RBLX | Gift | 27,901 | 28,776 | Form 4 |
| 2025-06-26 | RBLX | Gift | 27,901 | 81,815 | Form 4 |
| 2025-06-26 | RBLX | Option exercise | 139,507 | 0 | Form 4 |
| 2025-06-25 | RBLX | Option exercise | 47,928 | 259,487 | Form 4 |
| 2025-06-25 | RBLX | Option exercise | 47,928 | 139,507 | Form 4 |
| 2025-06-25 | RBLX | Gift | 9,586 | 10,461 | Form 4 |
| 2025-06-25 | RBLX | Gift | 4,792 | 133,252 | Form 4 |
| 2025-06-25 | RBLX | Gift | 9,586 | 123,666 | Form 4 |
| 2025-06-24 | RBLX | Option exercise | 192,617 | 404,176 | Form 4 |
| 2025-06-24 | RBLX | Gift | 19,261 | 176,567 | Form 4 |
| 2025-06-24 | RBLX | Gift | 38,523 | 39,398 | Form 4 |
| 2025-06-24 | RBLX | Gift | 38,523 | 138,044 | Form 4 |
| 2025-06-24 | RBLX | Option exercise | 192,617 | 187,435 | Form 4 |
| 2025-06-17 | RBLX | Option exercise | 454,963 | 666,522 | Form 4 |
| 2025-06-17 | RBLX | Gift | 90,992 | 91,867 | Form 4 |
| 2025-06-17 | RBLX | Option exercise | 454,963 | 380,052 | Form 4 |
| 2025-06-17 | RBLX | Gift | 90,992 | 195,828 | Form 4 |
| 2025-06-17 | RBLX | Gift | 45,496 | 286,820 | Form 4 |
| 2025-06-16 | RBLX | Option exercise | 232,537 | 444,096 | Form 4 |
| 2025-06-16 | RBLX | Gift | 23,253 | 378,824 | Form 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.