Teresa S. Gendron serves as Executive at NII HOLDINGS INC, where they oversee executive responsibilities. Since joining the company, Teresa S. Gendron has executed 26 insider transactions totaling $1.3M, demonstrating a bearish approach to their equity position. Their most recent transaction on Dec 16, 2025 involved receiving (via award) 2,624,671 shares valued at $0.
Teresa S. Gendron currently holds 2,624,671 shares of NII HOLDINGS INC (NIHD), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Teresa S. Gendron has been a net seller of NIHD stock. They have purchased $0 and sold $1.3M worth of shares.
Teresa S. Gendron's most recent insider trade was on Dec 16, 2025, when they sold 2,624,671 shares at $0.00 per share.
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| $N/A |
| Discretionary |
| May 31, 2023 | HLMN | $0 | Award | 14,669 | $N/A | Discretionary |
| Jun 14, 2022 | HLMN | $0 | Award | 10,330 | $N/A | Discretionary |
| Jul 15, 2021 | HLMN | $0 | Award | 7,207 | $N/A | Discretionary |
| Sep 1, 2014 | LUK | $750.0K | Award | 30,084 | $24.93 | Discretionary |
| Aug 6, 2014 | GCI | $118.3K | Option Exercise | 11,250 | $10.52 | Discretionary |
| Aug 6, 2014 | GCI | $386.3K | Sale | 11,250 | $34.34 | Discretionary |
| May 6, 2011 | NIHD | $30.7K | Sale | 700 | $43.81 | Discretionary |
| May 6, 2011 | NIHD | $88.4K | Award | 6,166 | $14.33 | Discretionary |
| May 6, 2011 | NIHD | $157.6K | Sale | 3,600 | $43.78 | Discretionary |
| May 6, 2011 | NIHD | $30.7K | Sale | 700 | $43.80 | Discretionary |
| May 6, 2011 | NIHD | $118.2K | Sale | 2,700 | $43.79 | Discretionary |
| Apr 20, 2011 | NIHD | $0 | Award | 3,721 | $N/A | Discretionary |
| May 3, 2010 | NIHD | $88.4K | Award | 6,167 | $14.33 | Discretionary |
| May 3, 2010 | NIHD | $196.5K | Award | 7,500 | $26.20 | Discretionary |
| May 3, 2010 | NIHD | $86.6K | Sale | 2,077 | $41.70 | Discretionary |
| May 3, 2010 | NIHD | $237.7K | Sale | 5,700 | $41.71 | Discretionary |
| May 3, 2010 | NIHD | $141.8K | Sale | 3,400 | $41.71 | Discretionary |
| May 3, 2010 | NIHD | $29.8K | Sale | 715 | $41.72 | Discretionary |
| May 3, 2010 | NIHD | $4.2K | Sale | 100 | $41.72 | Discretionary |
| May 3, 2010 | NIHD | $37.5K | Sale | 900 | $41.72 | Discretionary |
| May 3, 2010 | NIHD | $40.7K | Sale | 975 | $41.73 | Discretionary |
| May 3, 2010 | NIHD | $20.9K | Sale | 500 | $41.74 | Discretionary |
| May 3, 2010 | NIHD | $12.5K | Sale | 300 | $41.73 | Discretionary |
| Apr 23, 2010 | NIHD | $0 | Award | 1,600 | $N/A | Discretionary |