Each material 8-K filed by a company listed on a US stock exchange (NYSE, Nasdaq, Cboe), read and summarized: what happened, the key numbers, whether it reads positive or negative for shareholders, and how big a deal it is (impact 1-5). This page lists the last 45 days; every brief stays on its company's 8-K page (1654 companies, A–Z).
Kardigan said it completed enrollment in its Phase 2b KATALYST-AV trial of ataciguat in aortic stenosis, with 156 participants enrolled. It amended the protocol to assess the primary endpoint of aortic valve calcium at Week 48 instead, and the press release now puts topline data in the second half of 2027, which means a longer wait for shareholders.
156 participants enrolled in KATALYST-AV; baseline data from the first 139 were analyzed
Primary endpoint of aortic valve calcium moved to Week 48; an internal interim analysis is planned for Week 24
Press release gives topline data timing as second half of 2027, while the 8-K item text says second half of 2026
Investor webcast at the American Heart Association meeting on November 7, 2026, at 8:00 AM ET
Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.
Frequently asked questions
Which filings get a brief?
Form 8-K filings by companies listed on a US stock exchange (NYSE, Nasdaq, Cboe; not over-the-counter stocks) that report a material event: results (Item 2.02), deals (1.01, 2.01), executive changes (5.02), restructuring (2.05), impairments (2.06), delisting notices (3.01), restatements (4.02), cybersecurity incidents (1.05), bankruptcy (1.03) and Regulation FD or other events (7.01, 8.01). Routine filings such as vote results or exhibits only are skipped.
How is the impact score set?
The AI rates each filing from 1 (routine) to 5 (major, such as a merger, bankruptcy or restatement) based only on what the filing says. It is a reading aid for sorting the day's filings, not a prediction of how the stock will move.
How quickly do briefs appear?
On weekdays the SEC filing feed is checked every 5 minutes from 6 am to 5:45 pm Eastern, when nearly all 8-Ks come in, and every hour after that until 10 pm. Briefs of the 1,000 largest companies follow within minutes; the others usually within the hour, or later the same day when many filings arrive at once.
Which companies are covered?
Every company with shares listed on the NYSE, Nasdaq or Cboe that files 8-Ks, about 4,500 of them. Foreign companies that report on Form 6-K instead are not included. The S&P 1500 only filter above narrows the list to the large, mid and small caps of the S&P Composite 1500.
Are older briefs kept?
Yes. This page shows the last 45 days, but every brief ever published stays online: each has its own page, and each company has an 8-K page listing all of its briefs, newest first, linked from its stock page and from the A-Z list of companies.