SHAREHOLDING STRUCTURE

As of December 31, 2020

OMA has 390.1 million common shares outstanding; 87.2% are Series B shares, and 12.8% are Series BB shares.

OMA's Series B shares are listed on the Mexican Stock Exchange (BMV) and American Depositary Shares (ADSs) are listed on the NASDAQ Stock Market in the U.S.; each ADS represents 8 Series B shares.
 
OMA’s strategic partner, SETA, Servicios de Tecnología Aeroportuaria, S.A. de C.V. (SETA) owns all of the Series BB shares, which are not traded.
 
Each Series B and Series BB share gives the holder equal dividend rights and one vote in shareholders' meetings. The holders of Series BB shares also have veto rights over certain actions, including the payment of dividends and the nomination or removal of certain members of senior management.

Repurchase Program Operations

DATETOTAL SHARES ISSUEDSERIE BB SHARES ISSUED SERIE B SHARES ISSUED ACCUMULATED REPURCHASED SHARES IN TREASURY OUTSTANDING SERIE B SHARESOUTSTANDING TOTAL SHARES
December 31, 2020 390’111,55649’766,000340’345,5560340’345,556390’111,556
December 31, 2019393'770,97349'766,000344'004,9732,470,158341,534,815391,300,815
December 31, 2018 393'770,97349,766,000344,004,973324,507343,680,466393,446,466
December 31, 2017393'770,97349,766,000344,004,973324,507343,680,466393,446,466
December 31, 2016 400'000,00049'766,000350'234,0006,229,027344'004,973393'770,973
December 31, 2015 400'000,00049'766,000350'234,0007,843,623342'390,377392'156,377
December 31, 2014 400'000,00058'800,000341'200,0004'620,150336'579,850395'379,850
December 31, 2013 400'000,00058'800,000341'200,0001'440,783339'759,217398'559,217
December 31, 2012 400'000,00058'800,000341'200,000872,473340'327,527399'127,527
December 31, 2011 400'000,00058'800,000341'200,0001'151,300340'048,700398'848,700
December 31, 2010 400'000,00058'800,000341'200,000818,000340'382,000399'182,000
December 31, 2009 400'000,00058'800,000341'200,0001'643,400339'556,600398'356,600
December 31, 2008400'000,00058'800,000341'200,0004'726,100336'473,900395'273,900
December 31, 2007400'000,00058'800,000341'200,0002'604,700338'595,300397'395,300
December 31, 2006400'000,00058'800,000341'200,0000341'200,000400'000,000