SEC Form 4 · accession 0001237860-26-000012
1stdibs.com, Inc. · DIBS
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
David S Rosenblatt
Officer — Chief Executive Officer · Director
Period of report
Jun 8, 2026
Accepted (ET)
Jun 10, 2026 · 11:19 am EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001600641
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1 | Jun 8, 2026 | M | 47,500 | — | A | 2,094,698 | D | |
| Common StockF1 | Jun 8, 2026 | M | 47,500 | — | A | 2,142,198 | D | |
| Common StockF1 | Jun 8, 2026 | M | 41,666 | — | A | 2,183,864 | D | |
| Common StockF1 | Jun 8, 2026 | M | 37,500 | — | A | 2,221,364 | D | |
| Common StockF2 | Jun 8, 2026 | F | 96,228 | $4.01 | D | 2,125,136 | D | |
| Common Stock | holding | — | — | — | 22,500 | I | By 2024 Laura Thalheimer Rosenblatt Family Trust effective 4/1/2024 | |
| Common Stock | holding | — | — | — | 712,802 | I | By 2012 David Rosenblatt Family Trust dtd 11/30/2012 |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock UnitsF1,F3 | — | Jun 8, 2026 | M | 47,500 | D | — | — | Common Stock | 47,500 | 332,500 | D |
| Restricted Stock UnitsF1,F4 | — | Jun 8, 2026 | M | 47,500 | D | — | — | Common Stock | 47,500 | 522,500 | D |
| Restricted Stock UnitsF1,F5 | — | Jun 8, 2026 | M | 41,666 | D | — | — | Common Stock | 41,666 | 458,334 | D |
| Restricted Stock UnitsF1,F6 | — | Jun 8, 2026 | M | 37,500 | D | — | — | Common Stock | 37,500 | 112,500 | D |
Explanation of responses
- F1Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.
- F2These 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, March 14, 2025 and March 16, 2026. None of these shares were sold in an open market transaction.
- F3The 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.
- F4The 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.
- F5The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2026, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.
- F6The 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.