Connie Matsui serves as Executive at BIOGEN IDEC INC, where they oversee executive responsibilities. Since joining the company, Connie Matsui has executed 86 insider transactions totaling $16.5M, demonstrating a bearish approach to their equity position. Their most recent transaction on Oct 15, 2025 involved purchasing 50,000 shares valued at $40.0K.
Connie Matsui currently holds 50,000 shares of BIOGEN IDEC INC (BIIB), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Connie Matsui has been a net seller of BIIB stock. They have purchased $90.0K and sold $16.4M worth of shares.
Connie Matsui's most recent insider trade was on Oct 15, 2025, when they purchased 50,000 shares at $0.80 per share.
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| $N/A |
| Discretionary |
| May 5, 2023 | HALO | $0 | Award | 8,065 | $N/A | Discretionary |
| Nov 16, 2022 | HALO | $0 | Gift | 9,250 | $N/A | Discretionary |
| May 5, 2022 | HALO | $0 | Award | 6,206 | $N/A | Discretionary |
| Nov 5, 2021 | HALO | $511.6K | Sale | 12,548 | $40.77 | Discretionary |
| Nov 5, 2021 | HALO | $780.6K | Sale | 19,452 | $40.13 | Discretionary |
| May 5, 2021 | HALO | $0 | Award | 5,230 | $N/A | Discretionary |
| Sep 14, 2020 | HALO | $0 | Gift | 8,000 | $N/A | Discretionary |
| Sep 11, 2020 | HALO | $865.9K | Sale | 32,000 | $27.06 | Discretionary |
| May 4, 2020 | ARTL | $50.0K | Purchase | 41,667 | $1.20 | Discretionary |
| Apr 30, 2020 | HALO | $0 | Award | 8,829 | $N/A | Discretionary |
| May 2, 2019 | HALO | $0 | Award | 12,173 | $N/A | Discretionary |
| Dec 7, 2018 | HALO | $0 | Gift | 15,000 | $N/A | Discretionary |
| May 2, 2018 | HALO | $0 | Award | 10,363 | $N/A | Discretionary |
| Sep 21, 2017 | HALO | $0 | Gift | 15,000 | $N/A | Discretionary |
| May 8, 2017 | HALO | $103.7K | Option Exercise | 10,000 | $10.37 | Discretionary |
| May 4, 2017 | HALO | $0 | Award | 14,135 | $N/A | Discretionary |
| May 4, 2016 | HALO | $0 | Award | 20,202 | $N/A | Discretionary |
| Sep 14, 2015 | HALO | $23.3K | Option Exercise | 10,000 | $2.33 | Discretionary |
| Sep 14, 2015 | HALO | $49.4K | Option Exercise | 10,000 | $4.94 | Discretionary |
| May 6, 2015 | HALO | $0 | Award | 13,175 | $N/A | Discretionary |
| May 13, 2014 | HALO | $0 | Award | 24,876 | $N/A | Discretionary |
| May 16, 2013 | HALO | $0 | Award | 20,000 | $N/A | Discretionary |
| May 3, 2012 | HALO | $0 | Award | 20,000 | $N/A | Discretionary |
| May 5, 2011 | HALO | $0 | Award | 20,000 | $N/A | Discretionary |
| May 6, 2010 | HALO | $0 | Award | 20,000 | $N/A | Discretionary |
| May 7, 2009 | HALO | $0 | Award | 20,000 | $N/A | Discretionary |
| May 8, 2008 | HALO | $74.1K | Award | 15,000 | $4.94 | Discretionary |
| May 15, 2007 | HTI | $155.6K | Award | 15,000 | $10.37 | Discretionary |