This is the 18809th most frequent Korean word.
실적에
"실적에" means "in performance" or "in achievements."
In this sentence, '실적에' refers to the performance or results of the company being reported on.
지난 해 회사의 실적에 대해 보고했습니다.
I reported about the company's performance last year.
Here, '실적에' is used to indicate the basis on which something (an award, in this case) is given, relating to sales performance.
그의 판매 실적에 기반하여 상을 받았습니다.
He received an award based on his sales performance.
In this case, '실적에' identifies the specific performance period (this quarter) whose impacting factors are being analyzed.