Mark Reinstra, Chief Legal Officer and Corporate Secretary of Roblox Corp, filed a Form 4 on August 20, 2026, disclosing the sale of 6,250 shares of Class A Common Stock on August 19, 2026.

Key Highlights

  • Sale transaction: Reinstra disposed of 6,250 shares of Class A Common Stock at $40 per share on August 19, 2026.
  • 10b5-1 plan: The sale was made pursuant to a Rule 10b5-1 plan adopted by Reinstra on February 19, 2026.
  • Direct holdings after transaction: Reinstra directly beneficially owned 415,998 shares of Class A Common Stock following the reported transaction, a portion of which are Restricted Stock Units (RSUs).
  • Indirect holdings: Reinstra also holds indirect beneficial ownership across four annuity trusts and one family trust, totaling 220,654 additional shares of Class A Common Stock.
  • Reporting person role: Reinstra is identified in the filing as Chief Legal Officer and Corporate Secretary of Roblox Corp (NASDAQ:RBLX).

Reinstra's Sale Details and Beneficial Ownership Across Multiple Trusts

According to the filing, Mark Reinstra sold 6,250 shares of Roblox Corp Class A Common Stock on August 19, 2026, at a price of $40 per share, with the transaction coded as a sale (S). The filing states that this transaction was "effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 19, 2026." Following the sale, Reinstra directly beneficially owned 415,998 shares, which the filing notes include Restricted Stock Units, each representing "a contingent right to receive one share of the Issuer's Class A Common Stock."

In addition to direct holdings, the filing discloses indirect beneficial ownership across five separate trust arrangements. Reinstra holds 128,006 shares indirectly through the San Domenico Trust dated August 12, 1999, for which he serves as trustee. Two annuity trusts established in 2022 each hold 12,786 shares: the Mark L. Reinstra 2022 Annuity Trust and the Susan P. Reinstra 2022 Annuity Trust. Two annuity trusts established in 2023 each hold 33,538 shares: the Mark L. Reinstra 2023 Annuity Trust and the Susan P. Reinstra 2023 Annuity Trust. The filing notes that for the trusts bearing his spouse's name, "the spouse of the Reporting Person may be deemed to have beneficial ownership" of those securities.

No derivative securities transactions were reported in Table II of the filing. The Form 4 was signed by Mark Reinstra and filed on August 20, 2026.

What Was Disclosed

Roblox Corp's Chief Legal Officer and Corporate Secretary, Mark Reinstra, disclosed a single open-market sale of 6,250 Class A Common Stock shares at $40 each, conducted under a pre-established 10b5-1 trading plan, along with his direct and indirect beneficial ownership positions across multiple trusts.