Dataset Of Historical US Public-company Mergers And Acquisitions, Including Failed Deals?

I’m looking for a historical dataset of US public-company M&A transactions for quantitative research.

Minimum useful fields:

• target company / ticker / CUSIP
• acquirer
• announcement date
• offer price / consideration
• cash vs stock vs mixed
• deal status
• completion date OR withdrawal/termination date

Revision history and revised offer prices would be a major bonus.

Most importantly, the dataset must include failed/withdrawn deals, not only completed acquisitions, because otherwise it introduces obvious survivorship bias into merger-arbitrage research.

Time period: ideally 2000-present, although even a shorter clean sample would be useful.

Sources I’ve already looked into:

• SEC EDGAR
• LSEG / SDC
• FactSet Mergers
• S&P Capital IQ
• PitchBook
• MarketLine

Does anyone know of a legitimate open dataset, university/academic dataset, replication package, API, or reasonably priced commercial source?

I’m also happy to build it myself if someone can point me toward a reliable methodology or existing open-source project.