"We're letting you know that this security you are holding is affected by a voluntary corporation action event. tender purchase offer. If you choose to participate you must contact us." ticker: DWAC cutoff: 12/02/2022
Sounds something like the company is agreeing to be acquired, and are offering you the option of selling your shares now, or being converted into the new combined company shares. Why not ask your broker? Or better yet, the company investor hotline of the company you own?
They want you to cast your vote for their Special Meeting. https://finance.yahoo.com/news/decarbonization-plus-acquisition-corporation-iii-213900695.html
RTFM! (Read the filings, man!) https://www.sec.gov/edgar/searchedgar/companysearch.html Further hint: You've got holdings in a SPAC. What did you think they were going to do?
There are two primary types of corporate action - mandatory and voluntary. A mandatory action is initiated by the company's board of directors. This could include, for example, mergers and stock splits. Shareholders don’t have to act on these actions but they’re affected as beneficiaries. In contrast, a voluntary event occurs when shareholders elect to participate in the action. Here, the company can’t act without the shareholders' response. Examples of voluntary actions include events such as rights issues and open offers. So, that's all you need to know about this thing I guess. You can also apply to specialized services, for example, lawyers.
SPAM ALERT: Nice cut and paste from other web sites. Of course, you are completely wrong. "Board of directors" don't get to decide on mergers.