ROSENBLATT DAVID S 4
4 · 1stdibs.com, Inc. · Filed Mar 11, 2026
Research Summary
AI-generated summary of this filing
1stdibs (DIBS) CEO David Rosenblatt Exercises RSUs; Shares Withheld
What Happened
David S. Rosenblatt, CEO of 1stdibs.com, converted/vested a total of 132,500 restricted stock units (RSUs) on March 9, 2026. Of those vested shares, 62,088 were retained by the company to cover tax withholding at an implied price of $5.49 per share, totaling $340,863. The net result was approximately 70,412 shares issued to Rosenblatt. No shares were sold in an open market transaction.
Key Details
- Transaction date: March 9, 2026; Form 4 filed March 11, 2026 (filed within the normal 2-business-day window).
- RSUs converted/vested: 37,500 + 47,500 + 47,500 = 132,500 shares (reported as derivative conversions, code M).
- Tax withholding: 62,088 shares withheld (code F) at $5.49/share = $340,863; shares were retained by the issuer on a net-settlement basis (not sold in the market).
- Net shares received by Rosenblatt: ~70,412 shares (132,500 vested minus 62,088 withheld).
- Shares owned after transaction: not disclosed in the provided filing excerpt.
- Relevant footnotes: RSUs represent contingent rights to one share each and vest in 16 equal quarterly installments per grants dated Mar 15, 2023; Mar 8, 2024; and Mar 14, 2025. Withholding was to meet tax obligations; no open-market sale.
Context
- These entries reflect routine RSU vesting and net-share withholding for taxes (issuer retained shares), not an open-market sale or purchase. The M code indicates conversion/exercise of derivative awards (RSUs); the F code indicates tax withholding.
- Such vesting-and-withholding transactions are common and typically reflect compensation vesting rather than a signal of insider buying or selling intent.
Insider Transaction Report
Form 4
ROSENBLATT DAVID S
DirectorChief Executive Officer
Transactions
- Exercise/Conversion
Common Stock
[F1]2026-03-09+37,500→ 2,014,286 total - Exercise/Conversion
Common Stock
[F1]2026-03-09+47,500→ 2,061,786 total - Exercise/Conversion
Common Stock
[F1]2026-03-09+47,500→ 2,109,286 total - Tax Payment
Common Stock
[F2]2026-03-09$5.49/sh−62,088$340,863→ 2,047,198 total - Exercise/Conversion
Restricted Stock Units
[F1][F3]2026-03-09−37,500→ 150,000 total→ Common Stock (37,500 underlying) - Exercise/Conversion
Restricted Stock Units
[F1][F4]2026-03-09−47,500→ 380,000 total→ Common Stock (47,500 underlying) - Exercise/Conversion
Restricted Stock Units
[F1][F5]2026-03-09−47,500→ 570,000 total→ Common Stock (47,500 underlying)
Holdings
- 22,500(indirect: By Trust)
Common Stock
- 665,302(indirect: By Trust)
Common Stock
Footnotes (5)
- [F1]Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.
- [F2]These shares were retained by Issuer via settlement on a net withholding basis in order to meet the tax withholding obligations of the reporting person in connection with the vesting of an installment of restricted stock units ("RSUs") granted to the reporting person on March 15, 2023, March 8, 2024 and March 14, 2025. None of these shares were sold in an open market transaction.
- [F3]The initial number of restricted stock units granted shall vest in 16 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.
- [F4]The initial number of restricted stock units granted shall vest in 16 equal quarterly installments starting on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.
- [F5]The initial number of restricted stock units granted shall vest in 16 equal quarterly installments starting on June 8, 2025, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.
Signature
/s/ Melanie Goins, Attorney-In-Fact for David S. Rosenblatt|2026-03-11