The footage shows the moment the employees open their envelopes, which each detailed the amount they were receiving.
"I steer the boat but they're the ones who run the boat", St. John said in the video. "I couldn't think of a better way to show it", he added.
"What happened tonight was magical", one tearful employee said of the gift.
The 37-year-old Ms Ridgway - a 14-year employee - said she will use the bonus for her children's college funds. And, hold your breath, the total amount given away as bonus summed up to a whopping $10 million.
At the event, each of the firm's 198 employees were presented with a sealed envelope. "They were screaming, crying, laughing, hugging", Mr Maykrantz said. "It is life-changing. It is, it's really unbelievable".
The firm's president said the company chose to thank all the employees for helping it achieve its goal.
So when the 198 employees of St John Properties received surprise bonuses averaging US$50,000 ($73,412.80), it was a holiday miracle most didn't see coming.
"Everybody is important in this company and everybody performs in this company, they really do", he said. Larry Maykrantz, the company's president, asked the crowd to an eruption of cheers. "This was something to thank them for the last 48 years of our organization and the achievement we just reached".
A Baltimore-based company gave its employees a very special surprise before the holidays. "It's an investment in our employees". "They're the ones that make the boat go".
In 2005, the goal of developing 20 million square feet of office space was set by the company when it had just 10 million square feet.