Are you interviewing or applying for any other opportunities?

"I am keeping an eye out for viable positions with reputable organizations with great opportunities for my skillset. Although I am not in the final stages with any other company, I am actively seeking a new position in this region."

"Yes, I am active in my job search and have completed a second interview with another company. From what I've learned in both interviews, this role at Regeneron is exactly what I am looking for regarding my long-term growth and working for a great organization. Do you have a timeline for a decision on this position?"

Openly tell the interviewer about your search so far. Let your interviewer know if you have applied to other organizations or are even in interview/offer processes elsewhere. Don't divulge specifics about which company you are interviewing with, but it's good to let them know where you are with other companies. If possible, try to reiterate that this role at Regeneron remains at the top of your priority list.