SEC Form 4
Roblox Corporation (RBLX) insider trading
In the 12 months to Oct 26, 2026, 10 RBLX insiders reported open-market sales of $54.7M across 34 filings; one director bought $950.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $54.7M
- 34 filings · 10 insiders
- Open-market purchases
- $950
- 1 filing · Gina Mastantuono, Director
- Pre-arranged sales (10b5-1)
- 29 of 34
- $46.7M of $54.7M sold (85%)
Who traded RBLX, and when
- Purchase
- Sale
- Sale, pre-arranged (10b5-1)
RBLX daily close from Oct 27, 2025 to Oct 26, 2026, between $35.54 and $133.74, last $53.47. 34 sale and 1 purchase filings by 10 insiders, marked at their filing dates. Anthony P. Lee, Director: sold $18.3M across 4 filings, first filed Nov 5, 2025, last Jan 14, 2026. David Baszucki, President & CEO: sold $17.8M across 3 filings, first filed Nov 13, 2025, last Jan 9, 2026. Gregory Baszucki, Director: sold $6.6M across 8 filings, first filed Mar 3, 2026, last Oct 2, 2026. Mark Reinstra, Chief Legal Off. & Corp. Sec.: sold $5.6M across 8 filings, first filed Nov 7, 2025, last Oct 6, 2026. Arvind Chakravarthy, Chief People & Systems Officer: sold $4.1M across 1 filing, first filed Feb 11, 2026, last Feb 11, 2026. Matthew D. Kaufman, Chief Safety Officer: sold $1.9M across 3 filings, first filed Nov 5, 2025, last Nov 24, 2025. Gina Mastantuono, Director: sold $790 and bought $950 across 2 filings, first filed Feb 13, 2026, last Feb 13, 2026. 3 others: sold $469.7K across 6 filings, first filed Feb 26, 2026, last Sep 1, 2026.
Largest mark · tap a row for others
David Baszucki · President & CEO
Sale $6,992,961
66,896 shares at $104.53 avg
Filed Nov 13, 2025 · traded Nov 11
Pre-arranged (10b5-1) · close on filing date $101.27
Anthony P. Lee · Director
Director
$18.3M soldDavid Baszucki · President & CEO
President & CEO
$17.8M soldGregory Baszucki · Director
Director
$6.6M soldMark Reinstra · Chief Legal Off. & Corp. Sec.
Chief Legal Off. & Corp. Sec.
$5.6M soldArvind Chakravarthy · Chief People & Systems Officer
Chief People & Systems Officer
$4.1M soldMatthew D. Kaufman · Chief Safety Officer
Chief Safety Officer
$1.9M soldGina Mastantuono · Director
Director
$790 sold$950 bought3 others
Combined, one mark per week
$469.7K soldOpen-market trades
35 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Anthony P. Lee | Director | $18.3M | — | 4 | 100% of sales | |
| David Baszucki | President & CEO | $17.8M | — | 3 | 100% of sales | |
| Gregory Baszucki | Director | $6.6M | — | 8 | 100% of sales | |
| Mark Reinstra | Chief Legal Off. & Corp. Sec. | $5.6M | — | 8 | 32% of sales | |
| Arvind Chakravarthy | Chief People & Systems Officer | $4.1M | — | 1 | — | |
| Matthew D. Kaufman | Chief Safety Officer | $1.9M | — | 3 | 100% of sales | |
| Sean Jack Buckley | Chief People & Systems Officer | $387.1K | — | 2 | 100% of sales | |
| Andrea L. Wong | Director | $60.2K | — | 2 | — | |
| Amy Marie Rawlings | Chief Accounting Officer | $22.4K | — | 2 | 100% of sales | |
| Gina Mastantuono | Director | $790 | $950 | 2 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Mark Reinstra Chief Legal Off. & Corp. Sec. | SalePre-arranged (10b5-1) | 5,666 | $44.20 | $250.4K | 386,625 | |
traded | Gregory Baszucki Director | SalePre-arranged (10b5-1) | 16,666 | $42.87 | $714.4K | 8,937,052 | |
traded | Mark Reinstra Chief Legal Off. & Corp. Sec. | SalePre-arranged (10b5-1) | 5,773 | $44.80 | $258.6K | 392,391 | |
traded | Gregory Baszucki Director | SalePre-arranged (10b5-1) | 16,666 | $40.47 | $674.4K | 1,264,321 | |
traded | Andrea L. Wong Director | Sale | 562 | $40.89 | $23.0K | 45,265 | |
traded | Amy Marie Rawlings Chief Accounting Officer | SalePre-arranged (10b5-1) | 237 | $38.89 | $9.2K | 68,508 | |
traded | Sean Jack Buckley Chief People & Systems Officer | SalePre-arranged (10b5-1) | 4,321 | $38.68 | $167.1K | 87,213 | |
traded | Mark Reinstra Chief Legal Off. & Corp. Sec. | SalePre-arranged (10b5-1) | 6,250 | $40.00 | $250.0K | 415,998 | |
traded | Gregory Baszucki Director | SalePre-arranged (10b5-1) | 16,666 | $37.46 | $624.4K | 1,270,503 | |
traded | Mark Reinstra Chief Legal Off. & Corp. Sec. | SalePre-arranged (10b5-1) | 4,512 | $57.34 | $258.7K | 423,348 | |
traded | Gregory Baszucki Director | SalePre-arranged (10b5-1) | 16,666 | $57.69 | $961.4K | 8,962,051 | |
traded | Mark Reinstra Chief Legal Off. & Corp. Sec. | SalePre-arranged (10b5-1) | 5,978 | $41.71 | $249.3K | 426,760 | |
traded | Gregory Baszucki Director | SalePre-arranged (10b5-1) | 16,666 | $46.63 | $777.1K | 1,289,301 | |
traded | Sean Jack Buckley Chief People & Systems Officer | SalePre-arranged (10b5-1) | 4,744 | $46.36 | $219.9K | 97,141 | |
traded | Amy Marie Rawlings Chief Accounting Officer | SalePre-arranged (10b5-1) | 274 | $48.00 | $13.2K | 34,964 | |
traded | Mark Reinstra Chief Legal Off. & Corp. Sec. | SalePre-arranged (10b5-1) | 5,460 | $46.40 | $253.4K | 437,637 | |
traded | Gregory Baszucki Director | SalePre-arranged (10b5-1) | 16,666 | $44.97 | $749.4K | 8,969,697 | |
traded | Gregory Baszucki Director | SalePre-arranged (10b5-1) | 16,666 | $57.95 | $965.8K | 8,977,830 | |
traded | Gregory Baszucki Director | SalePre-arranged (10b5-1) | 16,666 | $68.98 | $1.1M | 8,988,715 | |
traded | Andrea L. Wong Director | Sale | 563 | $66.16 | $37.2K | 44,702 | |
traded | Mark Reinstra Chief Legal Off. & Corp. Sec. | Sale | 60,000 | $63.94 | $3.8M | 394,322 | |
traded | Gina Mastantuono Director | Sale | 22 | $35.90 | $790 | 16,623 | |
traded | Gina Mastantuono Director | Purchase | 22 | $43.20 | $950 | 16,636 | |
traded | Arvind Chakravarthy Chief People & Systems Officer | Sale | 60,564 | $67.25 | $4.1M | Multiple accounts | |
traded | Anthony P. Lee Director | SalePre-arranged (10b5-1) | 7,000 | $82.45 | $577.2K | 256,768 | |
traded | David Baszucki President & CEO | SalePre-arranged (10b5-1) | 66,896 | $76.48 | $5.1M | 138 | |
traded | Anthony P. Lee Director | SalePre-arranged (10b5-1) | 59,000 | $79.96 | $4.7M | 6,263,331 | |
traded | David Baszucki President & CEO | SalePre-arranged (10b5-1) | 66,896 | $84.73 | $5.7M | 138 | |
traded | Anthony P. Lee Director | SalePre-arranged (10b5-1) | 66,000 | $92.54 | $6.1M | Multiple accounts | |
traded | Matthew D. Kaufman Chief Safety Officer | SalePre-arranged (10b5-1) | 6,000 | $98.21 | $589.3K | 254,642 | |
traded | David Baszucki President & CEO | SalePre-arranged (10b5-1) | 66,896 | $104.53 | $7.0M | 1,054,172 | |
traded | Matthew D. Kaufman Chief Safety Officer | SalePre-arranged (10b5-1) | 6,000 | $101.48 | $608.9K | 260,642 | |
traded | Mark Reinstra Chief Legal Off. & Corp. Sec. | SalePre-arranged (10b5-1) | 2,401 | $104.60 | $251.1K | 387,314 | |
traded | Matthew D. Kaufman Chief Safety Officer | SalePre-arranged (10b5-1) | 6,000 | $112.99 | $677.9K | 266,642 | |
traded | Anthony P. Lee Director | SalePre-arranged (10b5-1) | 66,000 | $104.07 | $6.9M | Multiple accounts |
GET /stocks/filings/vX/form-4?tickers=RBLX&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"RBLX"
],
"issuer_cik": "0001315098",
"owner_cik": "0001835037",
"accession_number": "0001315098-26-000188",
"form_type": "4",
"filing_date": "2026-10-06",
"period_of_report": "2026-10-05",
"issuer_name": "Roblox Corp",
"issuer_trading_symbol": "RBLX",
"owner_name": "Reinstra Mark",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Legal Off. & Corp. Sec.",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-05",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 3000,
"transaction_price_per_share": 43.8773,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 389291,
"transaction_value": 131631.9,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 19, 2026."
},
{
"id": "F2",
"description": "The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $43.36 to $44.25, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."
},
{
"id": "F3",
"description": "A portion of these securities are Restricted Stock Units (\"RSUs\"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."
}
]
},
{
"tickers": [
"RBLX"
],
"issuer_cik": "0001315098",
"owner_cik": "0001835037",
"accession_number": "0001315098-26-000188",
"form_type": "4",
"filing_date": "2026-10-06",
"period_of_report": "2026-10-05",
"issuer_name": "Roblox Corp",
"issuer_trading_symbol": "RBLX",
"owner_name": "Reinstra Mark",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Legal Off. & Corp. Sec.",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-05",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2666,
"transaction_price_per_share": 44.5573,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 386625,
"transaction_value": 118789.7618,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 19, 2026."
},
{
"id": "F4",
"description": "The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $44.39 to $44.72, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."
},
{
"id": "F3",
"description": "A portion of these securities are Restricted Stock Units (\"RSUs\"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 136 records
- Option exercises4 records
- Tax withholding (sold to cover)85 records
- Grants and awards18 records
- Gifts16 records
- Other13 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has the Roblox Corporation's CEO sold stock?
Yes. David Baszucki (CEO) sold 200,688 shares ($17.8M) between Nov 2025 and Jan 2026, all under a pre-arranged 10b5-1 plan.
How current is RBLX’s insider data?
These are RBLX Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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