MICROSOFT CORP

CUSIP: 594918954 Class: PUT

GENERAL AMERICAN INVESTORS CO INC's Holding History (CIK: 0000040417)

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

Q4 2018
Shares 1,500 Value ($000) $728 Avg Close — Range —
Q3 2018
Shares 1,500 Value ($000) $263 Avg Close — Range —