As of December 31, 2017 and 2016 the common stock of CEMEX, S.A.B. de C.V. was presented as follows:
| 2017 | 2016 | |||||||||||||||
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Shares 1 |
Series A2 | Series B2 | Series A2 | Series B2 | ||||||||||||
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Subscribed and paid shares |
30,214,469,912 | 15,107,234,956 | 28,121,583,148 | 14,060,791,574 | ||||||||||||
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Unissued shares authorized for executives’ stock compensation programs |
531,739,616 | 265,869,808 | 638,468,154 | 319,234,077 | ||||||||||||
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Shares that guarantee the issuance of convertible securities3 |
4,529,605,020 | 2,264,802,510 | 5,218,899,920 | 2,609,449,960 | ||||||||||||
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| 35,275,814,548 | 17,637,907,274 | 33,978,951,222 | 16,989,475,611 | |||||||||||||
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| 1 | As of December 31, 2017 and 2016, 13,068,000,000 shares correspond to the fixed portion, and 39,845,721,822 shares in 2017 and 37,900,426,833 shares in 2016, correspond to the variable portion. |
| 2 | Series “A” or Mexican shares must represent at least 64% of CEMEX’s capital stock; meanwhile, Series “B” or free subscription shares must represent at most 36% of CEMEX’s capital stock. |
| 3 | Shares that guarantee the conversion of both the outstanding voluntary and mandatorily convertible securities and new securities issues (note 16.2). |