There are two badges:
One is Altruist which says First bounty you manually awarded on another person's question
And another is Investor which says First bounty you offered on another person's question
How are they both different from each other?
Offering a bounty is saying "I'll give reputation the people who answer this question". It then appears on the featured tab. Awarding bounty is saying "OK, you people have answered this question, so I'm giving this much reputation to what I think is the best answer".
More info here: How does the bounty system work?
