
Many web sites put a keyword rich one line short description of the content on the page in their title tag. Many of those companies also add to the end of their title tag the company or brand name of the site. Google confirmed that it is 100% okay to put your company name in your title tag.
John Mueller of Google said on Twitter it "wouldn't be bad" to put your company or brand name in your title tag, "assuming the title has more than just the brand name," he said.
Here are the tweets:
That wouldn't be bad, assuming the title has more than just the brand name.
— π John π (@JohnMu) August 16, 2018
In fact, a ton of sites do this. We don't do it here, but Search Engine Land does it, here is a screen shot of their title tag:

How it shows up in the search results depends on Google's mood.

But that is for another SEO debate.
Forum discussion at Twitter.
Note: This story was pre-written and scheduled to be posted now, I am currently offline for a holiday.





Comments:
Richard Anderson
09/11/2018 12:06 pm
I've seen google do it automatically to websites that didn't already have it in the meta title.
Richard
09/11/2018 12:12 pm
I read it in some document on their site that this is a recommendation - so after reading that I added it to my own site. Eg: https://www.rgraph.net/canvas/docs/hbar.html
Richard Barrett
09/11/2018 02:27 pm
They will 100% try this and sometimes get it wrong!
Tadeusz Szewczyk (Tad Chef)
09/11/2018 04:15 pm
When you don't add your brand name or site name in the title Google will do it for you. This might end up pretty useless. For example Google adds my full name to a blog on a subdomain.
Alex Gramm
09/11/2018 07:08 pm
I see better result when I use company name in the title. IMHO it is not bad for small company too.