Since launching on July 29th, the ALS "Ice Bucket Challenge" has swept across social media. In an effort to raise awareness for the disease and to raise money for research, participants are asked to either donate money or to dump a bucket of ice cold water on their head within the next 24 hours. They then nominate their peers to do the same.

The ALS organization reports that it has received more than $4 million in the past two weeks alone, and CEO Barbara Newhouse says she "could not be more thrilled with the level of compassion, generosity and sense of humor that people are exhibiting as they take part in this impactful viral initiative."

Here are twelve top executives who've participated in the challenge thus far. Who do you think will be next? 

1. Mark Zuckerberg


2. Martha Stewart


3. Satya Nadella


4. Dick Costolo


5. Gary Vaynerchuk


6. Tim Cook 


7. Bill Gates


8. Reed Hastings


9. Sheryl Sandberg 


10. Elon Musk


11. Larry Page and Sergey Brin 


12. Jeff Bezos