| SC 13G | 2017-01-20 | MORGAN STANLEY | OI S.A. | 33,478,863 | 5.0% | EDGAR |
| SC 13G/A | 2017-01-17 | MORGAN STANLEY | OI S.A. | 25,053,686 | 3.7% | EDGAR |
| SC 13D/A | 2016-08-17 | PointState Capital LP | OI S.A. | 43,250,000 | 8.3% | EDGAR |
| SC 13D/A | 2016-07-20 | PointState Capital LP | OI S.A. | 43,250,000 | 8.3% | EDGAR |
| SC 13D | 2016-07-18 | PointState Capital LP | OI S.A. | 43,250,000 | 8.3% | EDGAR |
| SC 13G | 2016-06-27 | MORGAN STANLEY | OI S.A. | 50,503,269 | 7.6% | EDGAR |
| SC 13D/A | 2015-10-21 | PHAROL, SGPS S.A. | OI S.A. | 231,097,076 | 40.7% | EDGAR |
| SC 13D/A | 2015-08-07 | PHAROL, SGPS S.A. | OI S.A. | 108,217,192 | 39.0% | EDGAR |
| SC 13D/A | 2015-08-05 | AG Telecom Participacoes S.A. | OI S.A. | 29,054,978 | 12.6% | EDGAR |
| SC 13D/A | 2015-08-05 | LF Tel S.A. | OI S.A. | 29,054,978 | 12.6% | EDGAR |
| SC 13D/A | 2015-08-05 | Telemar Participacoes S.A. | OI S.A. | 29,054,978 | 12.6% | EDGAR |
| SC 13D/A | 2015-04-16 | PORTUGAL TELECOM SGPS SA | OI S.A. | 137,272,170 | 49.4% | EDGAR |
| SC 13D/A | 2015-04-16 | LF Tel S.A. | OI S.A. | 29,054,978 | 12.6% | EDGAR |
| SC 13D/A | 2015-04-16 | AG Telecom Participacoes S.A. | OI S.A. | 29,054,978 | 12.6% | EDGAR |
| SC 13D/A | 2015-04-16 | Telemar Participacoes S.A. | OI S.A. | 29,054,978 | 12.6% | EDGAR |
| SC 13D/A | 2014-09-17 | PORTUGAL TELECOM SGPS SA | OI S.A. | 1,372,721,714 | 49.4% | EDGAR |
| SC 13D/A | 2014-09-17 | LF Tel S.A. | OI S.A. | 290,549,788 | 10.5% | EDGAR |
| SC 13D/A | 2014-09-17 | Telemar Participacoes S.A. | OI S.A. | 290,549,788 | 10.5% | EDGAR |
| SC 13D/A | 2014-09-17 | AG Telecom Participacoes S.A. | OI S.A. | 290,549,788 | 10.5% | EDGAR |
| SC 13D/A | 2014-07-28 | PORTUGAL TELECOM SGPS SA | OI S.A. | 1,372,721,714 | 49.4% | EDGAR |