Profusa, Inc. said its previously approved 1-for-4 reverse stock split became effective on Aug. 18, 2026, consolidating every four shares of common stock into one. The move reduces the number of shares outstanding on a proportional basis while keeping the company’s par value unchanged at $0.0001 per share. Profusa also noted that fractional shares will not be issued and that shareholders will receive cash in lieu.
The company’s common stock continues to trade on Nasdaq under the ticker PFSA, but with a new CUSIP number. Profusa said the reverse split does not change shareholder rights other than adjusting the share count.
Key takeaways
- Price move: Profusa shares were trading at $11.74, up 160.16%.
- Catalyst: The 1-for-4 reverse stock split took effect Aug. 18, 2026.
- How it works: Four existing shares were consolidated into one; fractional shares will receive cash in lieu.
- Investor implication: The split changes the share count and potentially per-share metrics, but Profusa said it does not alter shareholder rights.
What the reverse split changes
Profusa’s reverse split consolidates its common shares at a ratio of 1-for-4. As a result, the company’s outstanding shares fall proportionally, reflecting the same underlying ownership structure scaled down to a smaller number of shares.
While the par value remains at $0.0001 per share, Profusa said fractional shares will not be issued. In those cases, the company will provide cash payments in lieu of fractional interests, a standard feature of reverse splits meant to prevent holders from ending up with fractional shares after the consolidation.
Nasdaq trading updates and corporate details
Following the effective date, Profusa said its shares continue to trade on Nasdaq under the same ticker, PFSA. The company added that the split results in a new CUSIP number, which typically serves administrative and settlement purposes for brokers and market infrastructure.
Profusa also reiterated that authorized shares remain unchanged at 601 million. In its disclosure, the company emphasized that the reverse split does not affect shareholder rights beyond the mechanical adjustment to the number of shares held.
Why this matters to shareholders
Reverse stock splits often draw attention because they can affect how investors view per-share figures such as earnings, book value, and other metrics. Even when the underlying economics of a company do not change, the share count reduction can change the scale at which investors analyze performance.
Profusa’s statement also signals that holders should expect continuity in corporate rights, with the primary change being the conversion of their share holdings into the consolidated share structure. Because fractional shares are handled through cash payments, investors’ total ownership value is managed through a conversion process rather than leaving holders with partial shares.
Context from 2026 reverse splits
The Aug. 18, 2026 split is Profusa’s third reverse stock split in 2026. The company previously implemented a 1-for-75 reverse split on Feb. 9, 2026, and followed with a 1-for-25 reverse split on July 7, 2026, according to the company’s disclosures.
Taken together, the sequence suggests Profusa has repeatedly adjusted its share structure within a short time window. While reverse splits are typically used to address share price and listing-related considerations, they can also complicate historical comparisons of per-share data because earlier share counts were similarly altered.
Profusa is headquartered in Berkeley, California, and develops tissue-integrated biosensors designed to continuously transmit medical-grade biochemical data.
Investors may want to monitor how Profusa presents its financial results after the split, including any changes to per-share reporting and the company’s guidance cadence. The next key updates to watch will be its upcoming financial disclosures and any related corporate communications surrounding its capital needs and operational milestones.
