Kaufman Matthew D
Officer · RBLX
As of 2026-09-16, Kaufman Matthew D has 44 Form 4 transactions on record across 1 company — 25 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 $15.9M
- Indirect $0
| RBLX | direct | 335,060 sh | $15.9M |
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 | 10,994 @ $37.78 | $415K | −3.1% of holding | 338,970 | Form 4 |
| 2026-08-20 | RBLX | Sale | 3,910 @ $38.47 | $150K | −1.2% of holding | 335,060 | Form 4 |
| 2026-05-20 | RBLX | Sale | 12,756 @ $45.36 | $579K | −3.5% of holding | 350,154 | Form 4 |
| 2026-05-20 | RBLX | Sale | 1,410 @ $44.42 | $63K | −0.4% of holding | 362,910 | Form 4 |
| 2026-05-20 | RBLX | Sale | 190 @ $45.89 | $9K | −0.1% of holding | 349,964 | Form 4 |
| 2026-04-13 | RBLX | Sale | 13,225 @ $57.94 | $766K | −3.5% of holding | 364,420 | Form 4 |
| 2026-04-13 | RBLX | Sale | 100 @ $58.45 | $6K | −0.0% of holding | 364,320 | Form 4 |
| 2026-02-20 | RBLX | Sale | 8,589 @ $61.88 | $531K | −2.8% of holding | 293,086 | Form 4 |
| 2026-02-20 | RBLX | Sale | 5,588 @ $60.94 | $341K | −1.8% of holding | 301,675 | Form 4 |
| 2026-02-20 | RBLX | Sale | 1,050 @ $62.73 | $66K | −0.4% of holding | 292,036 | Form 4 |
| 2026-02-10 | RBLX | Sale | 27,634 @ $72.61 | $2.0M | −8.2% of holding | 309,663 | Form 4 |
| 2026-02-10 | RBLX | Sale | 2,400 @ $73.15 | $176K | −0.8% of holding | 307,263 | Form 4 |
| 2025-11-20 | RBLX | Sale | 6,000 @ $98.21 | $589K | −2.3% of holding | 254,642 | Form 4 |
| 2025-11-20 | RBLX | Sale | 4,886 @ $95.52 | $467K | −2.0% of holding | 244,030 | Form 4 |
| 2025-11-20 | RBLX | Sale | 3,595 @ $96.55 | $347K | −1.5% of holding | 240,435 | Form 4 |
| 2025-11-20 | RBLX | Sale | 3,200 @ $93.49 | $299K | −1.3% of holding | 251,442 | Form 4 |
| 2025-11-20 | RBLX | Sale | 2,526 @ $94.57 | $239K | −1.0% of holding | 248,916 | Form 4 |
| 2025-11-20 | RBLX | Sale | 660 @ $97.15 | $64K | −0.3% of holding | 239,775 | Form 4 |
| 2025-11-06 | RBLX | Sale | 6,000 @ $101.48 | $609K | −2.3% of holding | 260,642 | Form 4 |
| 2025-11-03 | RBLX | Sale | 6,000 @ $112.99 | $678K | −2.2% of holding | 266,642 | Form 4 |
| 2025-10-02 | RBLX | Sale | 6,000 @ $135.02 | $810K | −2.2% of holding | 272,642 | Form 4 |
| 2025-09-18 | RBLX | Sale | 6,000 @ $136.55 | $819K | −2.1% of holding | 278,642 | Form 4 |
| 2025-09-04 | RBLX | Sale | 6,000 @ $134.20 | $805K | −2.1% of holding | 275,015 | Form 4 |
| 2025-08-21 | RBLX | Sale | 6,000 @ $116.84 | $701K | −2.1% of holding | 281,015 | Form 4 |
| 2025-08-20 | RBLX | Sale | 5,621 @ $117.97 | $663K | −1.9% of holding | 290,427 | Form 4 |
| 2025-08-20 | RBLX | Sale | 3,945 @ $117.02 | $462K | −1.3% of holding | 296,048 | Form 4 |
| 2025-08-20 | RBLX | Sale | 3,412 @ $118.67 | $405K | −1.2% of holding | 287,015 | Form 4 |
| 2025-08-20 | RBLX | Sale | 1,230 @ $116.05 | $143K | −0.4% of holding | 299,993 | Form 4 |
| 2025-08-07 | RBLX | Sale | 6,000 @ $133.67 | $802K | −2.0% of holding | 301,223 | Form 4 |
| 2025-07-17 | RBLX | Sale | 6,000 @ $118.51 | $711K | −1.9% of holding | 307,223 | Form 4 |
| 2025-07-03 | RBLX | Sale | 6,000 @ $102.58 | $615K | −1.9% of holding | 313,223 | Form 4 |
| 2025-06-20 | RBLX | Sale | 6,000 @ $103.35 | $620K | −1.8% of holding | 319,223 | Form 4 |
| 2025-06-05 | RBLX | Sale | 6,000 @ $91.69 | $550K | −1.8% of holding | 325,223 | Form 4 |
| 2025-05-20 | RBLX | Sale | 13,928 @ $80.61 | $1.1M | −4.0% of holding | 332,316 | Form 4 |
| 2025-05-20 | RBLX | Sale | 1,093 @ $81.23 | $89K | −0.3% of holding | 331,223 | Form 4 |
| 2025-05-15 | RBLX | Sale | 6,000 @ $79.94 | $480K | −1.7% of holding | 346,244 | Form 4 |
| 2025-05-05 | RBLX | Sale | 11,425 @ $71.80 | $820K | −3.1% of holding | 352,819 | Form 4 |
| 2025-05-05 | RBLX | Sale | 575 @ $72.46 | $42K | −0.2% of holding | 352,244 | Form 4 |
| 2025-04-03 | RBLX | Sale | 6,000 @ $57.99 | $348K | −1.6% of holding | 364,244 | Form 4 |
5 award / exercise / gift records — not counted as purchases
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.