It seems that only 150 characters is allowed. This is kind of crippling :p
Here is what I would like to say:
For engineering contribution to PRODUCT_NAME. Granted quarterly to a small number of engineers that produce an "enormous, measurable value for the company" and was "a defining moment at COMPANY_NAME". The award is given to contributors that "played a central role in some major portion of the project achievement" to a degree that they went "outside the expected scope of their daily jobs, and it would be difficult to imagine anyone else achieving better results in the same roles."
Here is what I am settling on, which fits in the 150 character limit.
For producing an "enormous, measurable value for the company" such that it'd be hard to "imagine anyone else achieving better results".
Am I relaying the right information? Any help would be greatly appreciated!