FLEX PHARMA INC

CUSIP: 33938A105 Class: COM

PRIMECAP MANAGEMENT CO/CA/'s Holding History (CIK: 0000763212)

Note: Option positions (PUT/CALL) are excluded.

Q4 2018
Shares 38,500 Value ($000) $13 Avg Close — Range —
Q3 2018
Shares 195,809 Value ($000) $91 Avg Close — Range —
Q2 2018
Shares 1,811,300 Value ($000) $1,703 Avg Close — Range —
Q1 2018
Shares 1,811,300 Value ($000) $9,056 Avg Close — Range —
Q4 2017
Shares 1,806,414 Value ($000) $6,304 Avg Close — Range —
Q3 2017
Shares 1,680,000 Value ($000) $5,729 Avg Close — Range —
Q2 2017
Shares 1,576,100 Value ($000) $6,068 Avg Close — Range —
Q1 2017
Shares 1,472,800 Value ($000) $6,480 Avg Close — Range —
Q4 2016
Shares 1,082,600 Value ($000) $5,716 Avg Close — Range —
Q3 2016
Shares 857,359 Value ($000) $10,100 Avg Close — Range —
Q2 2016
Shares 790,911 Value ($000) $8,075 Avg Close — Range —
Q1 2016
Shares 634,721 Value ($000) $6,963 Avg Close — Range —
Q4 2015
Shares 439,375 Value ($000) $5,470 Avg Close — Range —
Q3 2015
Shares 369,400 Value ($000) $4,436 Avg Close — Range —
Q2 2015
Shares 326,200 Value ($000) $5,611 Avg Close — Range —
Q1 2015
Shares 320,200 Value ($000) $6,276 Avg Close — Range —