The Dane has done a remarkable job since being appointed in 2018, taking Brentford to the Premier League for the first time in their history in 2021, before securing a 13th-place finish in their debut season in the top flight.
He had signed a new deal just back in January to keep him at the Bees until 2025, but he has been rewarded with yet another contract after starting this campaign incredibly well, sitting in the top half of the table. Their standout result was a 2-1 victory over champions Manchester City at the Etihad Stadium.
"The warmth, support and kindness every time I meet a Bees fan has been amazing and it gives me extra energy to continue the work going forward," he said.
“We attacked the Premier League in the first season and we’re attacking it in our second season. I’m looking forward to hopefully continuing our progress and creating more magic moments together.”
Also speaking to Sky Sports, Frank revealed that he feels privileged to be able to sign a new deal, and that he has unfinished business at Brentford.
"I'm so pleased and I said earlier this year that I still feel, deep inside me, there is a lot of unfinished business here at Brentford, even though we've been extremely successful, all of us together, in the last years with some fantastic milestones: the new stadium, promotion, attacking the first season in the Premier League and now we are in a fine position in the league so far," he said.
"I work in a place where there is an unbelievable alignment from top to bottom and everybody's on the same page, everybody wants to attack, everyone wants to be better and that culture and environment inspires mate me and I'm pleased to be part of that."
Frank was also positive about those around him, and sees a very high ceiling at Brentford.
He added: "The most important thing for me is that I can see we can progress a lot more. The strategies are in place. We want to develop, we want to build, we want to add layers every single day. The club is willing to do that and they want the same. I have a fantastic co-operation and a daily one-to-one with Phil Giles the sporting director, Lee Dykes the technical director and, of course (owner) Matthew Benham - and that is massive.
"When you get that special feeling of a special place with the atmosphere where people are coming in every day with a smile on their face, big energy, big determination to want to get better, everyone pushing in the same direction, then you need to really protect it and take care of it.
"I will do my very best in the moment. Enjoy every day, try to improve and develop the club and myself every day and I hope we can achieve other magic moments."
Brentford are currently 10th in the Premier League, and return to action when they host Tottenham on Boxing Day.