John Joseph Giamatteo serves as Executive at REALNETWORKS INC, where they oversee executive responsibilities. Since joining the company, John Joseph Giamatteo has executed 19 insider transactions totaling $390.5K, demonstrating a bearish approach to their equity position. Their most recent transaction on Oct 2, 2025 involved selling 28,343 shares valued at $130.9K.
John Joseph Giamatteo currently holds 568,164 shares of REALNETWORKS INC (RNWK), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, John Joseph Giamatteo has been a net seller of RNWK stock. They have purchased $0 and sold $390.5K worth of shares.
John Joseph Giamatteo's most recent insider trade was on Oct 2, 2025, when they sold 28,343 shares at $4.62 per share.
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| $N/A |
| Discretionary |
| Jan 8, 2024 | BB | $59.0K | Sale | 18,279 | $3.23 | Discretionary |
| Jan 6, 2024 | BB | $0 | Option Exercise | 71,023 | $N/A | Discretionary |
| Jan 3, 2024 | BB | $97.1K | Sale | 29,862 | $3.25 | Discretionary |
| Jan 3, 2024 | BB | $0 | Option Exercise | 106,723 | $N/A | Discretionary |
| Jan 3, 2023 | BB | $103.4K | Sale | 30,239 | $3.42 | Discretionary |
| Jan 3, 2023 | BB | $0 | Option Exercise | 106,724 | $N/A | Discretionary |
| May 3, 2010 | SLH | $0 | Award | 29,365 | $N/A | Discretionary |
| Feb 22, 2010 | RNWK | $0 | Option Exercise | 4,167 | $N/A | Discretionary |
| Feb 22, 2010 | RNWK | $0 | Payment | 1,102 | $N/A | Discretionary |
| Aug 22, 2009 | RNWK | $0 | Option Exercise | 4,167 | $N/A | Discretionary |
| Aug 22, 2009 | RNWK | $0 | Payment | 1,102 | $N/A | Discretionary |
| Jun 24, 2009 | RNWK | $0 | Option Exercise | 33,333 | $N/A | Discretionary |
| Jun 24, 2009 | RNWK | $0 | Payment | 8,816 | $N/A | Discretionary |
| Feb 22, 2009 | RNWK | $0 | Option Exercise | 4,167 | $N/A | Discretionary |
| Feb 22, 2009 | RNWK | $0 | Payment | 1,102 | $N/A | Discretionary |
| Aug 22, 2008 | RNWK | $0 | Option Exercise | 4,167 | $N/A | Discretionary |
| Aug 22, 2008 | RNWK | $0 | Payment | 1,102 | $N/A | Discretionary |