Research date: September 8, 2026. Selected confirmed announcements, not a complete worldwide corporate-action calendar.

Stock splits and stock dividends can change the number of shares without creating an equivalent increase in economic value. This September review separates forward splits, reverse splits and record dates from effective dates. The original announcements remain the authority for each security.

Selected September-linked events

• Amphenol, APH: its August 6 announcement approved a two-for-one split paid as a stock dividend, with an August 17 record date and expected distribution September 2. The September date is already past at this cutoff. Company announcement.
• Tantech, TANH: its September 1 announcement specified a one-for-50 reverse split effective September 3 at 4:01 p.m. Eastern, with split-adjusted trading from September 4. This is a consolidation, not bonus shares. SEC-filed announcement.
• Tokyo Electron: its August 6 investor guide specified a five-for-one split with September 30 record date and October 1 effective date. It is September-linked, but the split takes effect in October. Investor guide.

Why more shares do not mean free profit

In a simplified two-for-one split, 10 shares priced at $100 become 20 priced around $50 before subsequent market moves. The arithmetic value remains $1,000. A reverse split applies the opposite share-count adjustment. Actual trading can move independently, but the mechanical change itself does not double or destroy the business.

Eligibility rules are not interchangeable

Stock dividends can have different ex-date and due-bill procedures from ordinary cash dividends. Investor.gov’s explanation highlights that distinction. International ordinary shares and depositary receipts may also require separate notices. Verify the exact security with the broker.

What to check in your account

Compare adjusted share count and per-share cost basis, keeping the total basis reconciliation intact before considering taxes or fees. Confirm the treatment of fractional shares in the actual terms. Open orders and derivative contracts may have their own adjustments, so do not assume every instruction remains valid unchanged.

FAQ: Is every high-priced stock about to split?

No. A high price or an old split history is not an announcement. This page includes only the selected sourced events above, not rumored candidates.

For cash distributions, see our September dividend review.

Educational corporate-action information, not personalized investment or tax advice.