Did you just stumble upon a file that has been digitally signed by OpenVPN Inc.? If that's the case, please read on.
You will probably see OpenVPN Inc. when double-clicking to run the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the digital signature details for OpenVPN Inc. with the following steps:
Here's a screenshot of a file digitally signed by OpenVPN Inc.:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This implies that the file has been published by OpenVPN Inc. and that no one has tampered with the file.
If you click the View Certificate button shown in the screengrab above, you can examine all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, etc. You can also examine the address for OpenVPN Inc., such as the street name, city and country.
DigiCert SHA2 Assured ID Code Signing CA has issued the OpenVPN Inc. certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the OpenVPN Inc. files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/72 | openvpn-gui.exe |
| 0/67 | openvpn.exe |
| 0/69 | openvpnserv.exe |
| 0/69 | openvpnserv.exe |
| 0/70 | openvpn.exe |
The detection percentage is based on the fact that I have gathered 347 scan reports for the OpenVPN Inc. files. 0 of these scan results came up with some sort of detection. If you like, you can review the full details of the scan results by examining the files listed above.
The analysis is based on certificates with the following serial numbers: