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.

Summary

• This filing is an amendment to a previous Schedule 13D, updating information regarding beneficial ownership of 1stdibs.com, Inc. common stock.
• The reporting persons, including John A. Catsimatidis Jr., United Refining, Inc., United Acquisition Corp., Red Apple Group, Inc., and John A. Catsimatidis, collectively hold 2,635,385 shares.
• This holding represents approximately 7.8% of the outstanding common stock, based on 33,615,293 shares outstanding as of July 31, 2026.
• The shares held by United Refining were purchased through open market transactions using working capital.
• The aggregate purchase price for these shares was approximately $13,216,097.15, including brokerage commissions.
• No transactions were entered into by United Acquisition, Red Apple Group, or Messrs. Catsimatidis Jr. and Catsimatidis in the past sixty days.

Sentiment

Score: 6

Explanation: StockSavvy.ai views this filing as neutral to slightly positive, reflecting routine ownership updates and open market purchases rather than significant strategic shifts.

Positives

• The reporting persons have increased their stake in 1stdibs.com, Inc. through open market purchases, indicating continued investment interest.
• The purchases were made using working capital by United Refining, suggesting the investment is funded through operational cash flow.
• The filing clearly details the ownership structure and the aggregate percentage held by the reporting group.

Negatives

• The filing does not provide any new strategic information or operational updates for 1stdibs.com, Inc., focusing solely on ownership changes.
• The information pertains to past transactions and does not offer forward-looking guidance or performance metrics for the issuer.

Risks

• The primary risk for investors is the lack of insight into the strategic direction or operational performance of 1stdibs.com, Inc. provided by this filing.
• Concentration of ownership among a few reporting persons could potentially influence corporate actions or future strategic decisions.

Future Outlook

The filing does not contain any forward-looking statements or guidance regarding 1stdibs.com, Inc.'s future performance. It solely reports on past transactions and current beneficial ownership.

Management Comments

• "Although United Refining is an operating company with a principal business concerning the refining and marketing of petroleum products, United Refining also regularly invests in securities and uses its cash flow and proceeds for such investment purpose."
• "Each of United Acquisition, Red Apple Group and Messrs. Catsimatidis Jr. and Catsimatidis has not entered into any transactions during the past sixty (60) days."

Industry Context

StockSavvy.ai notes that Schedule 13D filings typically report significant changes in beneficial ownership. This amendment indicates a continued, albeit routine, investment by the Catsimatidis group in 1stdibs.com, Inc., which operates in the online marketplace for art, antiques, and design.

Comparison to Industry Standards

• This filing is a Schedule 13D amendment, which is a standard SEC disclosure for significant beneficial ownership changes. It does not provide performance data to compare against industry benchmarks for 1stdibs.com, Inc. itself.
• The reporting persons' aggregate ownership of 7.8% is a notable stake, but without knowing the specific business segment of 1stdibs.com, Inc. and its competitors' ownership structures, a direct comparison is not feasible based solely on this document.

Stakeholder Impact

• Shareholders: The increased stake by a significant investor group may be viewed positively, but the lack of operational updates limits immediate impact assessment.
• Management of 1stdibs.com, Inc.: The filing confirms a substantial shareholder's continued interest, which could influence future strategic discussions.

Next Steps

• The reporting persons will continue to monitor their investment in 1stdibs.com, Inc.
• Future amendments to Schedule 13D will be filed if there are further material changes in beneficial ownership or other reportable events.

Key Dates

Keywords

1stdibs.com, Schedule 13D, beneficial ownership, common stock, Catsimatidis, Red Apple Group, United Refining, open market purchase