1/5SYNTEC OPTICS HOLDINGS, INC. (OPTX): Auditor change

Market data

Price before filing: $2.18 (2025-10-13 close, split/dividend-adjusted)
Market cap at flag: $84.5M (2025-10-14) · Latest: $255.5M (2026-10-16)

What happened next

Return from the last close before the filing date to the first close on/after the window end. Pending windows have not fully elapsed. Past performance says nothing certain about the future.

Insider trading around this filing

90 days before the flag: no open-market insider sales or purchases reported.
30 days after: none reported.

Open-market purchases and sales (Form 4 codes P and S) by officers, directors and 10% owners, by transaction date, from 2025-07-16 to 2025-11-13. Excludes option exercises, grants, gifts and tax withholding. Amended filings replace the originals; joint filings count once. Foreign private issuers do not file Form 4. Many insider sales are pre-scheduled (10b5-1 plans) and are not by themselves a sign of wrongdoing.

Verified excerpt

"On October 10, 2025, Marcum informed Syntec Optics Holdings, Inc."

Quoted from the filing. Source

What this means

The company changed its outside auditor (8-K Item 4.01). A dismissal or resignation, especially near an annual report or with reported disagreements, is a warning sign. Changes caused by audit firms merging are usually routine.

Type: routine (audit-firm merger)
Disagreements reported: no
Former auditor: Marcum LLP · New auditor: CBIZ CPAs P.C.

Why this score: routine: audit firm merged/was acquired