Michael E Stillabower
CIK 1192955 · View on SEC EDGAR ↗
Insider
First SEC filing: Aug. 6, 2019 · Latest: Aug. 6, 2019
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 69 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
69 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 2, 2019 | MMSI | S | 40,750 | $40.05 | $1,632,038 | 107,868 Direct | -27.42% | Disposed | 127.1% (price as of 2026-08-18) |
| March 4, 2019 | MMSI | S | 10,000 | $58.05 | $580,500 | 53,618 Direct | -15.72% | Disposed | 56.7% (price as of 2026-08-18) |
| June 6, 2018 | MMSI | S | 12,050 | $50.50 | $608,525 | 43,618 Direct | -21.65% | Disposed | 80.1% (price as of 2026-08-18) |
| May 19, 2017 | MMSI | S | 17,110 | $33.71 | $576,778 | 35,668 Direct | -32.42% | Disposed | 169.8% (price as of 2026-08-18) |
| Aug. 15, 2016 | MMSI | S | 25,000 | $24.29 | $607,250 | 27,778 Direct | -47.37% | Disposed | 274.4% (price as of 2026-08-18) |
| March 13, 2015 | MMSI | S | 37,500 | $19.40 | $727,500 | 27,778 Direct | -57.45% | Disposed | 368.8% (price as of 2026-08-18) |
| Oct. 29, 2013 | MMSI | S | 24,277 | $16.42 | $398,628 | 27,778 Direct | -46.64% | Disposed | 453.8% (price as of 2026-08-18) |
| Oct. 28, 2013 | MMSI | S | 13,223 | $16.41 | $216,989 | 27,778 Direct | -32.25% | Disposed | 454.2% (price as of 2026-08-18) |
| Aug. 24, 2012 | MMSI | S | 52,084 | $14.19 | $739,072 | 27,778 Direct | -65.22% | Disposed | 540.9% (price as of 2026-08-18) |
| March 15, 2012 | MMSI | S | 1,926 | $12.43 | $23,940 | 27,778 Direct | -6.48% | Disposed | 631.6% (price as of 2026-08-18) |
| Dec. 13, 2011 | MMSI | S | 1,082 | $13.65 | $14,769 | 27,778 Direct | -3.75% | Disposed | 566.2% (price as of 2026-08-18) |
| Dec. 2, 2011 | MMSI | S | 19,213 | $13.68 | $262,834 | 27,778 Direct | -40.89% | Disposed | 564.8% (price as of 2026-08-18) |
| July 29, 2008 | MMSI | S | 13,777 | $20.50 | $282,428 | 22,222 Direct | -38.27% | Disposed | 454.5% (price as of 2026-08-18) |
| July 29, 2008 | MMSI | S | 2,562 | $20.48 | $52,470 | 35,999 Direct | -6.64% | Disposed | 455.1% (price as of 2026-08-18) |
| July 29, 2008 | MMSI | S | 11,438 | $20.28 | $231,963 | 38,561 Direct | -22.88% | Disposed | 460.5% (price as of 2026-08-18) |
| March 12, 2004 | MMSI | S | 20,833 | $22.58 | $470,409 | 22,222 Direct | +1499.86% | Acquired | 403.4% (price as of 2026-08-18) |
| July 25, 2003 | MMSI | S | 11,719 | $25.60 | $300,006 | 12,500 Direct | +1500.51% | Acquired | 689.4% (price as of 2026-08-18) |
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 |
|---|---|---|---|---|---|---|---|
| Aug. 2, 2019 | MMSI | Non-qualified stock options (right to buy) | Common Stock (10,000) | $34.40 | May 24, 2024 | 10,000 | Disposed |
| Aug. 2, 2019 | MMSI | Non-qualified stock options (right to buy) | Common Stock (15,000) | $18.80 | May 26, 2023 | 15,000 | Disposed |
| Aug. 2, 2019 | MMSI | Non-qualified stock options (right to buy) | Common Stock (20,000) | $20.27 | May 22, 2022 | 20,000 | Disposed |
| Aug. 2, 2019 | MMSI | Non-qualified stock options (right to buy) | Common Stock (25,000) | $13.99 | June 11, 2021 | 25,000 | Disposed |
| Aug. 2, 2019 | MMSI | Non-qualified stock options (right to buy) | Common Stock (25,000) | $9.95 | May 22, 2020 | 25,000 | Disposed |
| March 4, 2019 | MMSI | Non-qualified stock options (right to buy) | Common Stock (20,000) | $12.91 | May 23, 2019 | 20,000 | Disposed |
| June 7, 2018 | MMSI | Common Stock | Common Stock (25,000) | $50.50 | June 7, 2025 | 25,000 | Acquired |
| June 6, 2018 | MMSI | Non-qualified stock options (right to buy) | Common Stock (20,000) | $13.75 | Aug. 11, 2018 | 20,000 | Disposed |
| May 24, 2017 | MMSI | Non-qualified stock options (right to buy) | Common Stock (25,000) | $34.40 | May 24, 2024 | 25,000 | Acquired |
| May 19, 2017 | MMSI | Non-qualified stock options (right to buy) | Common Stock (25,000) | $13.16 | June 25, 2017 | 25,000 | Disposed |
| Aug. 15, 2016 | MMSI | Non-qualified stock options (right to buy) | Common Stock (25,000) | $13.82 | Sept. 26, 2016 | 25,000 | Disposed |
| May 26, 2016 | MMSI | Non-qualified stock options (right to buy) | Common Stock (25,000) | $18.80 | May 26, 2023 | 25,000 | Acquired |
| May 22, 2015 | MMSI | Non-qualified stock options (right to buy) | Common Stock (25,000) | $20.27 | May 22, 2022 | 25,000 | Acquired |
| March 13, 2015 | MMSI | Non-qualified stock options (right to buy) | Common Stock (18,750) | $11.53 | May 21, 2015 | 18,750 | Disposed |
| March 13, 2015 | MMSI | Non-qualified stock options (right to buy) | Common Stock (18,750) | $11.41 | May 25, 2015 | 18,750 | Disposed |
| June 11, 2014 | MMSI | Non-qualified stock options (right to buy) | Common Stock (25,000) | $13.99 | June 11, 2021 | 25,000 | Acquired |
| Oct. 29, 2013 | MMSI | Non-qualified stock options (right to buy) | Common Stock (5,527) | $9.70 | June 27, 2014 | 5,527 | Disposed |
| Oct. 29, 2013 | MMSI | Non-qualified stock options (right to buy) | Common Stock (18,750) | $11.05 | June 10, 2014 | 18,750 | Disposed |
| Oct. 28, 2013 | MMSI | Non-qualified stock options (right to buy) | Common Stock (13,223) | $9.70 | June 27, 2014 | 13,223 | Disposed |
| May 22, 2013 | MMSI | Non-qualified stock options (right to buy) | Common Stock (25,000) | $9.95 | May 22, 2020 | 25,000 | Acquired |
| Aug. 24, 2012 | MMSI | Non-qualified stock options (right to buy) | Common Stock (18,750) | $9.22 | May 25, 2013 | 18,750 | Disposed |
| Aug. 24, 2012 | MMSI | Non-qualified stock options (right to buy) | Common Stock (33,334) | $8.38 | May 22, 2013 | 33,334 | Disposed |
| May 23, 2012 | MMSI | Non-qualified stock options (right to buy) | Common Stock (20,000) | $12.91 | May 23, 2019 | 20,000 | Acquired |
| March 15, 2012 | MMSI | Non-qualified stock options (right to buy) | Common Stock (1,926) | $7.65 | May 23, 2012 | 1,926 | Disposed |
| Dec. 13, 2011 | MMSI | Non-qualified stock options (right to buy) | Common Stock (1,082) | $7.65 | May 23, 2012 | 1,082 | Disposed |
| Dec. 2, 2011 | MMSI | Non-qualified stock options (right to buy) | Common Stock (19,213) | $7.65 | May 23, 2012 | 19,213 | Disposed |
| Aug. 11, 2011 | MMSI | Non-qualified stock options (right to buy) | Common Stock (20,000) | $13.75 | Aug. 11, 2018 | 20,000 | Acquired |
| June 25, 2010 | MMSI | Non-qualified stock options (right to buy) | Common Stock (20,000) | $16.45 | June 25, 2017 | 20,000 | Acquired |
| Sept. 26, 2009 | MMSI | Non-qualified stock options (right to buy) | Common Stock (20,000) | $17.28 | Sept. 26, 2016 | 20,000 | Acquired |
| July 29, 2008 | MMSI | Non-qualified stock options (right to buy) | Common Stock (27,777) | $2.85 | May 23, 2011 | 27,777 | Disposed |
| May 21, 2008 | MMSI | Non-qualified stock options (right to buy) | Common Stock (15,000) | $14.41 | May 21, 2015 | 15,000 | Acquired |
| June 27, 2007 | MMSI | Non-qualified stock options (right to buy) | Common Stock (15,000) | $12.13 | June 27, 2014 | 15,000 | Acquired |
| May 25, 2006 | MMSI | Non-qualified stock options (right to buy) | Common Stock (15,000) | $11.52 | May 25, 2013 | 15,000 | Acquired |
| May 25, 2005 | MMSI | Non-qualified stock options (right to buy) | Common Stock (15,000) | $14.26 | May 25, 2015 | 15,000 | Acquired |
| June 10, 2004 | MMSI | Non-qualified stock Options (right to buy) | Common Stock (15,000) | $13.81 | June 10, 2014 | 15,000 | Acquired |
| March 12, 2004 | MMSI | Nonqualified Stock Options (right to buy) | Common Stock (20,833) | $1.62 | May 24, 2005 | 20,833 | Disposed |
| Dec. 13, 2003 | MMSI | Non-qualified Stock Option (right to buy) | Common Stock (15,000) | $21.67 | Dec. 13, 2013 | 15,000 | Acquired |
| July 25, 2003 | MMSI | Non-qualified Stock Option (right to buy) | Common Stock (11,719) | $3.76 | May 26, 2004 | 11,719 | Acquired |
| Aug. 8, 1988 | MMSI | Nonqualified Stock Options (right to buy) | Common Stock (15,000) | $21.67 | Dec. 13, 2013 | 15,000 | Acquired |
| Aug. 8, 1988 | MMSI | Nonqualified Stock Options (right to buy) | Common Stock (26,667) | $10.47 | May 22, 2013 | 26,667 | Acquired |
| Aug. 8, 1988 | MMSI | Nonqualified Stock Options (right to buy) | Common Stock (17,777) | $9.56 | May 23, 2012 | 17,777 | Acquired |
| Aug. 8, 1988 | MMSI | Nonqualified Stock Options (right to buy) | Common Stock (27,777) | $2.85 | May 23, 2011 | 27,777 | Acquired |
| Aug. 8, 1988 | MMSI | Non-qualified Stock Option (right to buy) | Common Stock | — | May 22, 2013 | 26,667 | Acquired |
| Aug. 8, 1988 | MMSI | Non-qualified Stock Option (right to buy) | Common Stock | — | May 23, 2012 | 17,777 | Acquired |
| Aug. 8, 1988 | MMSI | Non-qualified Stock Option (right to buy) | Common Stock | — | May 23, 2011 | 27,777 | Acquired |
| Aug. 8, 1988 | MMSI | Non-qualified Stock Option (right to buy) | Common Stock | — | May 24, 2005 | 20,833 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).