ZG - SEC Form 4 insider transactions

Director Blachford Erik C sold $27,527 worth of Class C Capital Stock (791 units at $34.80) as part of a pre-agreed trading plan, decreasing direct ownership by 2% to 34,952 units (SEC Form 4)

Chief Executive Officer Wacksman Jeremy sold $331,491 worth of Class C Capital Stock (9,072 units at $36.54) as part of a pre-agreed trading plan, decreasing direct ownership by 6% to 153,699 units (SEC Form 4)

Chief People Officer Spaulding Dan sold $193,091 worth of Class C Capital Stock (5,134 units at $37.61) as part of a pre-agreed trading plan, decreasing direct ownership by 9% to 49,696 units (SEC Form 4) to satisfy tax liability

Chief Financial Officer Hofmann Jeremy sold $344,990 worth of Class C Capital Stock (9,172 units at $37.61) as part of a pre-agreed trading plan, decreasing direct ownership by 12% to 68,315 units (SEC Form 4) to cover withholding tax

Chief Executive Officer Wacksman Jeremy sold $229,469 worth of Class C Capital Stock (6,051 units at $37.92), decreasing direct ownership by 4% to 162,771 units (SEC Form 4) (for withholding tax)

Chief Operating Officer Choo Jun sold $46,602 worth of Class C Capital Stock (1,228 units at $37.95), decreasing direct ownership by 1% to 107,699 units (SEC Form 4) to cover withholding tax

Chief Technology Officer Beitel David A. sold $71,279 worth of Class C Capital Stock (1,879 units at $37.93), decreasing direct ownership by 1% to 134,811 units (SEC Form 4) (tax withholding)

Chief Accounting Officer Rock Jennifer sold $39,282 worth of Class C Capital Stock (1,034 units at $37.99), decreasing direct ownership by 2% to 59,742 units (SEC Form 4) to cover withholding tax

Chief Industry Dev. Officer Samuelson Errol G sold $111,599 worth of Class C Capital Stock (2,939 units at $37.97), decreasing direct ownership by 2% to 134,039 units (SEC Form 4) to cover withholding tax

General Counsel Owens Bradley D. sold $210,443 worth of Class C Capital Stock (5,610 units at $37.51) as part of a pre-agreed trading plan, decreasing direct ownership by 8% to 65,245 units (SEC Form 4) to cover taxes

Amendment: SEC Form 4 filed by Barton Richard N

SEC Form 4 filed by Samuelson Errol G

SEC Form 4 filed by Owens Bradley D.

SEC Form 4 filed by Chief Technology Officer Beitel David A.

SEC Form 4 filed by Co -Exec. Chairman & President Frink Lloyd D

SEC Form 4 filed by Co-Executive Chairman Barton Richard N

SEC Form 4 filed by Chief Operating Officer Choo Jun

Chief Executive Officer Wacksman Jeremy was granted 52,500 units of Class C Capital Stock, increasing direct ownership by 45% to 168,822 units (SEC Form 4)

Chief Accounting Officer Rock Jennifer was granted 21,750 units of Class C Capital Stock, increasing direct ownership by 56% to 60,776 units (SEC Form 4)

General Counsel Owens Bradley D. was granted 37,500 units of Class C Capital Stock, increasing direct ownership by 112% to 70,855 units (SEC Form 4)

Chief Industry Dev. Officer Samuelson Errol G was granted 20,000 units of Class C Capital Stock, increasing direct ownership by 18% to 133,800 units (SEC Form 4)

Chief People Officer Spaulding Dan was granted 13,750 units of Class C Capital Stock, increasing direct ownership by 33% to 54,830 units (SEC Form 4)

Chief Financial Officer Hofmann Jeremy was granted 20,000 units of Class C Capital Stock, increasing direct ownership by 35% to 77,487 units (SEC Form 4)

SEC Form 4 filed by Director Hoag Jay C

SEC Form 4 filed by Director Stephenson Gordon Sheridan

Director Blachford Erik C was granted 3,166 units of Class C Capital Stock, disposed of 8,417 units of Class C Capital Stock and sold $41,393 worth of Class C Capital Stock (966 units at $42.85), decreasing direct ownership by 15% to 35,743 units (SEC Form 4)

Director Cormier Thielke Claire sold $10,370 worth of Class C Capital Stock (242 units at $42.85) and was granted 4,749 units of Class C Capital Stock, increasing direct ownership by 1,862% to 4,749 units (SEC Form 4)

SEC Form 4 filed by Director Bohutinsky Amy

SEC Form 4 filed by Director Underwood April

Director Maffei Gregory B exercised 16,835 units of Class C Capital Stock at a strike of $21.46 and sold $363,458 worth of Class C Capital Stock (8,050 units at $45.15), increasing direct ownership by 1% to 637,783 units (SEC Form 4)

SEC Form 4 filed by Director Gurley J William

Director Blachford Erik C exercised 8,417 units of Class C Capital Stock at a strike of $21.46, increasing direct ownership by 25% to 41,960 units (SEC Form 4)

Co -Exec. Chairman & President Frink Lloyd D exercised 56,394 units of Class C Capital Stock at a strike of $22.41 and sold $1,796,191 worth of Class C Capital Stock (39,663 units at $45.29), increasing direct ownership by 0.75% to 2,249,920 units (SEC Form 4)

Director Hoag Jay C exercised 16,835 units of Class C Capital Stock at a strike of $21.46 (SEC Form 4)

Chief Financial Officer Hofmann Jeremy sold $340,482 worth of Class C Capital Stock (7,786 units at $43.73), decreasing direct ownership by 12% to 57,487 units (SEC Form 4)

Chief Financial Officer Hofmann Jeremy sold $244,879 worth of Class C Capital Stock (5,538 units at $44.22), decreasing direct ownership by 8% to 65,273 units (SEC Form 4)

Chief Executive Officer Wacksman Jeremy sold $813,589 worth of Class C Capital Stock (18,390 units at $44.24), decreasing direct ownership by 14% to 116,322 units (SEC Form 4)

Chief People Officer Spaulding Dan sold $408,009 worth of Class C Capital Stock (9,262 units at $44.05), decreasing direct ownership by 18% to 41,080 units (SEC Form 4)

Chief Industry Dev. Officer Samuelson Errol G sold $310,124 worth of Class C Capital Stock (7,015 units at $44.21), decreasing direct ownership by 6% to 113,800 units (SEC Form 4)

Chief Accounting Officer Rock Jennifer sold $95,699 worth of Class C Capital Stock (2,164 units at $44.22), decreasing direct ownership by 5% to 39,026 units (SEC Form 4)

Chief Operating Officer Choo Jun sold $91,164 worth of Class C Capital Stock (2,061 units at $44.23), decreasing direct ownership by 2% to 108,927 units (SEC Form 4)

Chief Technology Officer Beitel David A. sold $175,379 worth of Class C Capital Stock (3,966 units at $44.22), decreasing direct ownership by 3% to 136,690 units (SEC Form 4)

General Counsel Owens Bradley D. sold $204,742 worth of Class C Capital Stock (4,619 units at $44.33), decreasing direct ownership by 12% to 33,355 units (SEC Form 4)

Co-Executive Chairman Barton Richard N exercised 300,000 units of Class C Capital Stock at a strike of $22.41, increasing direct ownership by 12% to 2,801,225 units (SEC Form 4)

Co -Exec. Chairman & President Frink Lloyd D exercised 27,774 units of Class C Capital Stock at a strike of $22.41 and sold $1,439,954 worth of Class C Capital Stock (27,774 units at $51.85) (SEC Form 4)

Director Blachford Erik C sold $69,972 worth of Class C Capital Stock (965 units at $72.51), decreasing direct ownership by 3% to 33,543 units (SEC Form 4)

Director Cormier Thielke Claire sold $17,475 worth of Class C Capital Stock (241 units at $72.51), decreasing direct ownership by 50% to 242 units (SEC Form 4)

General Counsel Owens Bradley D. sold $183,490 worth of Class C Capital Stock (2,722 units at $67.41), decreasing direct ownership by 7% to 37,974 units (SEC Form 4)

Chief Operating Officer Choo Jun sold $223,398 worth of Class C Capital Stock (3,141 units at $71.12), decreasing direct ownership by 3% to 110,988 units (SEC Form 4)

General Counsel Owens Bradley D. sold $134,910 worth of Class C Capital Stock (1,897 units at $71.12), decreasing direct ownership by 4% to 40,696 units (SEC Form 4)

Chief Technology Officer Beitel David A. sold $276,863 worth of Class C Capital Stock (3,893 units at $71.12), decreasing direct ownership by 3% to 140,656 units (SEC Form 4)

Chief Industry Dev. Officer Samuelson Errol G sold $543,490 worth of Class C Capital Stock (7,641 units at $71.13), decreasing direct ownership by 6% to 120,815 units (SEC Form 4)

Chief Executive Officer Wacksman Jeremy sold $1,296,473 worth of Class C Capital Stock (18,401 units at $70.46), decreasing direct ownership by 12% to 134,712 units (SEC Form 4)

Chief Financial Officer Hofmann Jeremy sold $935,913 worth of Class C Capital Stock (13,335 units at $70.18), decreasing direct ownership by 16% to 70,811 units (SEC Form 4)

Chief People Officer Spaulding Dan sold $650,155 worth of Class C Capital Stock (9,274 units at $70.11), decreasing direct ownership by 16% to 50,342 units (SEC Form 4)

Chief Accounting Officer Rock Jennifer sold $434,149 worth of Class C Capital Stock (6,001 units at $72.35), decreasing direct ownership by 13% to 41,190 units (SEC Form 4)

Co -Exec. Chairman & President Frink Lloyd D exercised 5,832 units of Class C Capital Stock at a strike of $22.41 and sold $476,445 worth of Class C Capital Stock (5,832 units at $81.70) (SEC Form 4)

Co -Exec. Chairman & President Frink Lloyd D exercised 10,000 units of Class C Capital Stock at a strike of $22.41 and sold $877,709 worth of Class C Capital Stock (10,000 units at $87.77) (SEC Form 4)

Chief Technology Officer Beitel David A. sold $2,047,753 worth of Class C Capital Stock (22,510 units at $90.97), decreasing direct ownership by 13% to 144,549 units (SEC Form 4)

Chief Operating Officer Choo Jun exercised 25,575 units of Class C Capital Stock at a strike of $38.78 and sold $2,328,890 worth of Class C Capital Stock (25,575 units at $91.06) (SEC Form 4)