It appears that the owner is a stand up guy.

http://beerpulse.com/2013/01/lagunitas-brewing-may-have-been-courted-by-a-b-inbev/

Finn, you may know better than I,  but Louis at the Brewery said their new expansion makes Lagunitas the 9th largest Brewery in the United States.  If that is the case, then InBev would be crazy not to TRY to buy them out...

Here is a list from 2011.  Found a couple articles referring to overall volume being up in 2012 but not by list of breweries.

1. MillerCoors; Chicago IL
2. Pabst Brewing; Woodridge IL
3. D. G. Yuengling and Son; Pottsville PA
4. Boston Beer Co.; Boston MA
5. North American Breweries; Rochester, NY
6. Sierra Nevada Brewing; Chico CA
7. New Belgium Brewing; Fort Collins CO
8. Craft Brewers Alliance, Inc.; Portland, OR
9. Gambrinus Company; San Antonio TX
10. Deschutes Brewery; Bend OR
11. Matt Brewing; Utica NY
12. Bell’s Brewery; Galesburg MI
13. Minhas Craft Brewery; Monroe WI
14. Harpoon Brewery; Boston, MA
15. Lagunitas Brewing; Petaluma CA
16. Boulevard Brewing; Kansas City MO
17. Stone Brewing; Escondido CA
18. Dogfish Head Craft Brewery; Lewes DE
19. Brooklyn Brewery; Brooklyn NY
20. Alaskan Brewing; Juneau AK
21. Long Trail Brewing; Burlington VT
22. August Schell Brewing; New Ulm MN
23. Shipyard Brewing; Portland ME
24. Abita Brewing; New Orleans LA