Aptevo Therapeutics Inc. 8-K

What Happened
Aptevo Therapeutics Inc. filed an 8-K on December 29, 2025 to report that its Board implemented a reverse stock split of the company’s common stock at a ratio of 1-for-18. Shareholders had approved a range of alternate reverse-split ratios (1-for-6 to 1-for-22) at a special meeting on July 24, 2025; the Board selected the 1-for-18 ratio on December 17, 2025 and the Certificate of Amendment became effective at 5:01 p.m. ET on December 29, 2025. Aptevo’s common stock began trading on The Nasdaq Capital Market on a split-adjusted basis when the market opened on December 30, 2025. The new CUSIP is 03835L702.

Key Details

• Reverse split ratio: 1-for-18 (every 18 pre-split shares combined into one post-split share).
• Effective time/filed: Certificate of Amendment filed with Delaware on Dec 29, 2025; effective at 5:01 p.m. ET Dec 29, 2025.
• Trading: Nasdaq trading adjusted at market open Dec 30, 2025. New CUSIP 03835L702.
• Equity adjustments: Per-share exercise prices and/or number of shares for outstanding stock options, restricted stock units (RSUs) and warrants will be adjusted proportionately (options/warrants will have exercise price increased proportionally). Shares reserved under equity plans will be proportionately reduced.
• Fractions: No fractional shares will be issued; record holders entitled to fractional shares will receive cash in lieu. For warrant exercises that would result in fractions, Aptevo will round up to the next whole share. The split was applied on a record-holder-by-record-holder basis (fractions aggregated per holder).
• Ownership: The reverse split does not change any stockholder’s percentage ownership except to the extent fractional-share cash-outs occur.

Why It Matters
A reverse stock split reduces the number of outstanding shares and raises the per-share price proportionally; it does not, by itself, change an investor’s ownership percentage (aside from cashing out fractional shares). Holders of options, RSUs and warrants should expect adjusted share counts and exercise prices on a proportional basis and should monitor account statements for updated share balances. Retail investors should also note the new CUSIP and that any fractional-share cash payments will be handled by their broker or the transfer agent.