Richard W. Brissenden
CIK 1540320 · View on SEC EDGAR ↗
Insider
First SEC filing: Jan. 26, 2012 · Latest: Feb. 14, 2024
On this page
Insider at
Insider transactions
0 buys (P)
3 sells (S)
Net:
$-226,141
+ 25 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
25 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 29, 2026 | MUX | S | 3,275 | $18.13 | $59,376 | 18,022 Direct | -15.38% | Disposed | 13.5% (price as of 2026-08-21) |
| Sept. 22, 2025 | MUX | S | 4,775 | $14.88 | $71,052 | 12,964 Direct | -26.92% | Disposed | 38.3% (price as of 2026-08-21) |
| Sept. 22, 2025 | MUX | S | 6,428 | $14.89 | $95,713 | 9,405 Direct | -40.60% | Disposed | 38.2% (price as of 2026-08-21) |
| Aug. 9, 2019 | MUX | S | 25,000 | $2.01 | $50,250 | 0 Direct | — | Acquired | 2.4% (price as of 2026-08-21) |
| June 11, 2019 | MUX | S | 4,000 | $1.93 | $7,720 | 0 Direct | -100.00% | Disposed | 6.6% (price as of 2026-08-21) |
| May 7, 2019 | MUX | S | 26,000 | $1.93 | $50,180 | 4,000 Direct | -86.67% | Disposed | 6.6% (price as of 2026-08-21) |
| Nov. 19, 2018 | MUX | S | 25,000 | $1.80 | $45,000 | 30,000 Direct | -45.45% | Disposed | 14.3% (price as of 2026-08-21) |
| Sept. 22, 2017 | MUX | P | 5,000 | — | — | 5,000 Direct | — | Acquired | (price as of 2026-08-21) |
| Sept. 22, 2017 | MUX | P | 10,000 | — | — | 30,000 Direct | +50.00% | Acquired | (price as of 2026-08-21) |
| Dec. 15, 2016 | MUX | S | 5,000 | — | — | 20,000 Direct | -20.00% | Disposed | (price as of 2026-08-21) |
| Dec. 14, 2016 | MUX | S | 10,000 | — | — | 25,000 Direct | -28.57% | Disposed | (price as of 2026-08-21) |
| Dec. 18, 2015 | MUX | P | 10,000 | $0.98 | $9,800 | 10,000 Direct | — | Acquired | 110.0% (price as of 2026-08-21) |
| Nov. 19, 2012 | MUX | S | 15,100 | $3.61 | $54,511 | 0 Direct | -100.00% | Disposed | -43.0% (price as of 2026-08-21) |
| Nov. 16, 2012 | MUX | S | 14,900 | $3.51 | $52,299 | 15,100 Direct | -49.67% | Disposed | -41.4% (price as of 2026-08-21) |
| Nov. 15, 2012 | MUX | S | 75,000 | $0.14 | $10,500 | 0 Direct | -100.00% | Disposed | 1370.0% (price as of 2026-08-21) |
| Nov. 15, 2012 | MUX | S | 45,000 | $3.50 | $157,500 | 30,000 Direct | -60.00% | Disposed | -41.2% (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| June 29, 2026 | MUX | Stock Option (right to buy) | Common Stock (8,333) | $7.10 | June 28, 2028 | 8,333 | Disposed |
| Sept. 22, 2025 | MUX | Stock Option (right to buy) | Common Stock (8,334) | $7.10 | June 28, 2028 | 8,334 | Disposed |
| Sept. 22, 2025 | MUX | Stock Option (right to buy) | Common Stock (7,500) | $1.25 | Sept. 28, 2025 | 7,500 | Disposed |
| Aug. 11, 2025 | MUX | Stock Option (right to buy) | Common Stock (20,000) | $10.43 | Aug. 11, 2030 | 20,000 | Acquired |
| Dec. 31, 2024 | MUX | Stock Option (right to buy) | Common Stock (8,333) | $7.10 | June 28, 2028 | 8,333 | Disposed |
| Sept. 29, 2020 | MUX | Stock Option (right to buy) | Common Stock (75,000) | $1.25 | Sept. 28, 2025 | 75,000 | Acquired |
| Aug. 9, 2019 | MUX | Stock Option (right to buy) | Common Stock (25,000) | $1.02 | Nov. 26, 2020 | 25,000 | Disposed |
| June 11, 2019 | MUX | Stock Option (right to buy) | Common Stock (75,000) | $1.67 | June 10, 2024 | 75,000 | Acquired |
| Nov. 19, 2018 | MUX | Stock Option (Right to Buy) | Common Stock (25,000) | $1.02 | Nov. 26, 2020 | 25,000 | Disposed |
| Sept. 22, 2017 | MUX | Common Stock Purchase Warrant (Right to Buy) | Common Stock (5,000) | $2.70 | Sept. 28, 2018 | 5,000 | Acquired |
| April 26, 2017 | MUX | Stock option (right to buy) | Common Stock (5,600) | — | — | 100,000 | Acquired |
| Dec. 14, 2016 | MUX | Stock Option (Right to Buy) | Common Stock (75,000) | $1.02 | Nov. 26, 2020 | 25,000 | Disposed |
| Nov. 27, 2015 | MUX | Stock Option (Right to Buy) | Common Stock (75,000) | $1.02 | Nov. 26, 2020 | 75,000 | Acquired |
| Aug. 11, 2014 | MUX | Stock Option (Right to buy) | Common Stock (45,000) | $2.90 | Aug. 11, 2019 | 45,000 | Acquired |
| May 21, 2013 | MUX | Stock Option - Right to Buy | Common Stock (45,000) | $2.25 | May 21, 2018 | 45,000 | Acquired |
| Nov. 15, 2012 | MUX | Subscription Rights (Right to Buy) | Common Stock (7,500) | — | Dec. 4, 2012 | 75,000 | Disposed |
| Nov. 7, 2012 | MUX | Stock Option-Right to Buy | Common Stock (30,000) | $2.26 | May 13, 2015 | 30,000 | Disposed |
| Nov. 7, 2012 | MUX | Stock Option-Right to Buy | Common Stock (45,000) | $1.62 | March 1, 2014 | 45,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.