1stdibscom, INC Schedule 13D activist filings

Filed when an investor crosses five percent and intends to influence the company — the activist disclosure.

NASDAQ

19 Oct 2026

DIBS

SCHEDULE: Catsimatidis Group Updates 1stdibs.com Stake

Filings reveal John A. Catsimatidis Jr. and associated entities have updated their beneficial ownership of 1stdibs.com, Inc. common stock, reporting 7.8% ownership after recent open market purchases.

NASDAQ

22 Nov 2025

DIBS

1stdibscom, INC

SCHEDULE: Red Apple Group Takes 5.1% Stake in 1stdibs.com

Red Apple Group and its affiliates have acquired a 5.1% stake in 1stdibs.com, citing the company's strategic plan, financial inflection point, and undervaluation as key investment drivers.