If you have two verbs governed by he/she/it, does the second verb also need to be singular of only the first one?

Question

When you use he, she, or it in a sentence, you need to modify the verb for the third person singular, but what happens if we use two or more verbs in the same sentence? Example:

1. The thief steals and runs.
2. The thief steals and run.

Which of those is the right sentence? English is not my native language, so I am still learning things.

Answer 1

The plural / singular verbs need to agree with the plural / singular subjects.

The thief steals and runs.
The thieves steal and run.

The thief steals and (the thief) runs.
The thieves steal and (the thieves) run.