Michael G Grey
CIK 1240122 · View on SEC EDGAR ↗
Insider
First SEC filing: June 8, 2026 · Latest: June 8, 2026
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
0 buys (P)
3 sells (S)
Net:
$-11,100,000
+ 89 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
89 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 19, 2025 | MIRM | S 10b5-1 | 50,000 | $78.00 | $3,900,000 | 0 Direct | -100.00% | Disposed | 31.4% (price as of 2026-08-19) |
| Dec. 1, 2025 | MIRM | S 10b5-1 | 50,000 | $74.00 | $3,700,000 | 0 Direct | -100.00% | Disposed | 38.5% (price as of 2026-08-19) |
| Nov. 21, 2025 | MIRM | S 10b5-1 | 50,000 | $70.00 | $3,500,000 | 0 Direct | -100.00% | Disposed | 46.5% (price as of 2026-08-19) |
| Sept. 14, 2023 | MIRM | S 10b5-1 | 14,216 | $32.00 | $454,912 | 0 Direct | -100.00% | Disposed | 220.4% (price as of 2026-08-19) |
| Sept. 13, 2023 | MIRM | S 10b5-1 | 392 | $32.00 | $12,544 | 0 Direct | -100.00% | Disposed | 220.4% (price as of 2026-08-19) |
| June 8, 2023 | MIRM | S 10b5-1 | 14,608 | $29.00 | $423,632 | 0 Direct | -100.00% | Disposed | 253.5% (price as of 2026-08-19) |
| May 3, 2023 | MIRM | S 10b5-1 | 14,608 | $28.00 | $409,024 | 0 Direct | -100.00% | Disposed | 266.1% (price as of 2026-08-19) |
| Feb. 22, 2016 | BMRN | S 10b5-1 | 7,500 | $80.00 | $600,000 | 26,250 Direct | -22.22% | Disposed | -14.4% (price as of 2026-08-19) |
| Nov. 16, 2015 | BMRN | S 10b5-1 | 7,500 | $104.27 | $782,025 | 26,250 Direct | -22.22% | Disposed | -34.3% (price as of 2026-08-19) |
| Dec. 11, 2013 | BMRN | S | 30,000 | $69.66 | $2,089,800 | 23,050 Direct | -56.55% | Disposed | -1.7% (price as of 2026-08-19) |
| March 6, 2013 | BMRN | S | 15,000 | $60.61 | $909,150 | 19,650 Direct | -43.29% | Disposed | 12.9% (price as of 2026-08-19) |
Showing latest 100 of 143 transactions
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. 7, 2026 | OKUR | Stock Option (right to buy) | Class A Common Stock (22,350) | $4.14 | Aug. 6, 2036 | 22,350 | Acquired |
| June 15, 2026 | MIRM | Restricted Stock Units | Common Stock (1,980) | — | — | 1,980 | Acquired |
| June 15, 2026 | MIRM | Stock Option (right to buy) | Common Stock (3,772) | $101.00 | June 14, 2036 | 3,772 | Acquired |
| June 4, 2026 | OKUR | Stock Option (right to buy) | Class A Common Stock (7,650) | $4.30 | June 3, 2036 | 7,650 | Acquired |
| May 21, 2026 | SPRB | Stock Option (Right to Buy) | Common Stock (1,700) | $52.70 | May 20, 2036 | 1,700 | Acquired |
| Dec. 19, 2025 | MIRM | Stock Option (right to buy) | Common Stock (50,000) | $2.94 | March 11, 2029 | 50,000 | Disposed |
| Dec. 11, 2025 | SPRB | Stock Option (Right to Buy) | Common Stock (387) | $104.13 | July 22, 2029 | 387 | Acquired |
| Dec. 11, 2025 | SPRB | Stock Option (Right to Buy) | Common Stock (387) | — | July 22, 2029 | 387 | Disposed |
| Dec. 11, 2025 | SPRB | Stock Option (Right to Buy) | Common Stock (1,255) | $104.13 | June 7, 2030 | 1,255 | Acquired |
| Dec. 11, 2025 | SPRB | Stock Option (Right to Buy) | Common Stock (1,255) | — | June 7, 2030 | 1,255 | Disposed |
| Dec. 11, 2025 | SPRB | Stock Option (Right to Buy) | Common Stock (1,499) | $104.13 | Aug. 6, 2030 | 1,499 | Acquired |
| Dec. 11, 2025 | SPRB | Stock Option (Right to Buy) | Common Stock (1,499) | — | Aug. 6, 2030 | 1,499 | Disposed |
| Dec. 11, 2025 | SPRB | Stock Option (right to buy) | Common Stock (133) | $104.13 | May 19, 2031 | 133 | Acquired |
| Dec. 11, 2025 | SPRB | Stock Option (right to buy) | Common Stock (133) | — | May 19, 2031 | 133 | Disposed |
| Dec. 11, 2025 | SPRB | Stock Option (Right to Buy) | Common Stock (666) | $104.13 | Dec. 15, 2031 | 666 | Acquired |
| Dec. 11, 2025 | SPRB | Stock Option (Right to Buy) | Common Stock (666) | — | Dec. 15, 2031 | 666 | Disposed |
| Dec. 11, 2025 | SPRB | Stock Option (Right to Buy) | Common Stock (400) | $104.13 | May 24, 2033 | 400 | Acquired |
| Dec. 11, 2025 | SPRB | Stock Option (Right to Buy) | Common Stock (400) | — | May 24, 2033 | 400 | Disposed |
| Dec. 1, 2025 | MIRM | Stock Option (right to buy) | Common Stock (50,000) | $2.94 | March 11, 2029 | 50,000 | Disposed |
| Nov. 21, 2025 | MIRM | Stock Option (right to buy) | Common Stock (50,000) | $2.94 | March 11, 2029 | 50,000 | Disposed |
| Sept. 14, 2023 | MIRM | Stock Option (right to buy) | Common Stock (14,216) | $2.94 | March 11, 2029 | 14,216 | Disposed |
| Sept. 13, 2023 | MIRM | Stock Option (right to buy) | Common Stock (392) | $2.94 | March 11, 2029 | 392 | Disposed |
| June 12, 2023 | MIRM | Stock Option (right to buy) | Common Stock (17,000) | $28.97 | June 11, 2033 | 17,000 | Acquired |
| June 8, 2023 | MIRM | Stock Option (right to buy) | Common Stock (14,608) | $2.94 | March 11, 2029 | 14,608 | Disposed |
| June 6, 2023 | OKUR | Stock Option (right to buy) | Common Stock (17,500) | $9.01 | June 5, 2033 | 17,500 | Acquired |
| May 25, 2023 | SPRB | Stock Option (Right to Buy) | Common Stock (30,000) | $2.26 | May 24, 2033 | 30,000 | Acquired |
| May 3, 2023 | MIRM | Stock Option (right to buy) | Common Stock (14,608) | $2.94 | March 11, 2029 | 14,608 | Disposed |
| Aug. 31, 2022 | OKUR | Stock option (right to buy) | Common Stock (50,000) | $1.97 | April 4, 2028 | 50,000 | Disposed |
| June 2, 2022 | MIRM | Stock Option (right to buy) | Common Stock (17,000) | $23.51 | June 1, 2032 | 17,000 | Acquired |
| June 1, 2022 | OKUR | Stock Option (right to buy) | Common Stock (17,500) | $2.09 | May 31, 2032 | 17,500 | Acquired |
| May 25, 2022 | SPRB | Stock Option (Right to Buy) | Common Stock (22,500) | $1.32 | May 24, 2032 | 22,500 | Acquired |
| Dec. 16, 2021 | SPRB | Employee Stock Option (right to buy) | Common Stock (50,000) | $2.48 | Dec. 15, 2031 | 50,000 | Acquired |
| June 4, 2021 | MIRM | Stock Option (right to buy) | Common Stock (17,000) | $16.88 | June 3, 2031 | 17,000 | Acquired |
| May 20, 2021 | SPRB | Stock Option (Right to Buy) | Common Stock (10,000) | $15.24 | May 19, 2021 | 10,000 | Acquired |
| April 13, 2021 | OKUR | Series A Preferred Stock | Common Stock (20,162) | — | — | 90,222 | Disposed |
| April 8, 2021 | OKUR | Stock Option (right to buy) | Common Stock (14,000) | $15.00 | April 7, 2031 | 14,000 | Acquired |
| June 11, 2020 | MIRM | Stock Option (right to buy) | Common Stock (17,000) | $16.71 | June 10, 2030 | 17,000 | Acquired |
| Jan. 1, 2020 | MIRM | Stock Option (right to buy) | Common Stock (100,000) | $24.52 | Dec. 31, 2029 | 100,000 | Acquired |
| July 22, 2019 | MIRM | Series A Prefered Stock | Common Stock | — | — | 63,585 | Disposed |
| June 6, 2017 | BMRN | Stock Option (right to buy) Common Stock | Common Stock (4,910) | $89.60 | June 5, 2027 | 4,910 | Acquired |
| June 6, 2016 | BMRN | Stock Option (right to buy) Common Stock | Common Stock (4,440) | $89.52 | June 5, 2026 | 4,440 | Acquired |
| Feb. 22, 2016 | BMRN | Stock Option (right to buy) Common Stock | Common Stock (7,500) | $38.59 | May 21, 2018 | 7,500 | Disposed |
| Nov. 16, 2015 | BMRN | Stock Option (right to buy) Common Stock | Common Stock (7,500) | $38.59 | May 21, 2018 | 7,500 | Disposed |
| June 10, 2015 | BMRN | Stock Option (right to buy) common stock | Common Stock (3,300) | $122.27 | June 9, 2025 | 3,300 | Acquired |
| June 4, 2014 | BMRN | Stock Option (right to buy) common stock | Common Stock (6,600) | $63.10 | June 4, 2014 | 6,600 | Acquired |
| Dec. 11, 2013 | BMRN | Stock Option (right to buy) | Common Stock (7,500) | $26.49 | May 11, 2021 | 7,500 | Disposed |
| Dec. 11, 2013 | BMRN | Stock Option (right to buy) | Common Stock (15,000) | $21.51 | May 11, 2020 | 15,000 | Disposed |
| Dec. 11, 2013 | BMRN | Stock Option Right to Buy | Common Stock (7,500) | $17.33 | June 6, 2017 | 7,500 | Disposed |
| May 15, 2013 | BMRN | Stock Option (right to buy) | Common Stock (8,500) | $67.81 | May 14, 2023 | 8,500 | Acquired |
| March 6, 2013 | BMRN | Stock Option (right to buy) | Common Stock (15,000) | $14.39 | May 11, 2019 | 15,000 | Disposed |
| May 8, 2012 | BMRN | Stock Option (right to buy) | Common Stock (8,500) | $37.46 | May 7, 2022 | 8,500 | Acquired |
| Feb. 23, 2012 | BMRN | Stock Option (right to buy) | Common Stock (15,000) | $16.92 | Dec. 14, 2016 | 30,000 | Acquired |
| May 12, 2011 | BMRN | Stock Option (right to buy) | Common Stock (15,000) | $26.49 | May 11, 2021 | 15,000 | Acquired |
| May 12, 2010 | BMRN | Stock Option (right to buy) | Common Stock (15,000) | $21.51 | May 11, 2020 | 15,000 | Acquired |
| May 22, 2009 | BMRN | Restricted Stock Unit [F2] | Common Stock (2,500) | — | — | 2,500 | Disposed |
| May 12, 2009 | BMRN | Stock Option (right to buy) | Common Stock (15,000) | $14.39 | May 11, 2019 | 15,000 | Acquired |
| July 7, 2008 | BMRN | Restricted Stock Unit [F2] | Common Stock (1,250) | — | — | 1,250 | Disposed |
| May 22, 2008 | BMRN | Restricted Stock Units | Common Stock (2,500) | — | — | 2,500 | Acquired |
| May 22, 2008 | BMRN | Stock Option (right to buy) | Common Stock (15,000) | $38.59 | May 21, 2018 | 15,000 | Acquired |
| March 5, 2008 | BMRN | Stock Option (right to buy) | Common Stock (30,000) | $10.33 | Dec. 13, 2015 | 30,000 | Disposed |
| June 7, 2007 | BMRN | Restricted Stock Units | Common Stock (1,250) | — | — | 1,250 | Acquired |
| June 7, 2007 | BMRN | Stock Option (right to buy) | Common Stock (7,500) | $17.33 | June 6, 2017 | 7,500 | Acquired |
| Dec. 14, 2006 | BMRN | Stock Option (right to buy) | Common Stock (30,000) | $16.92 | Dec. 13, 2016 | 30,000 | Acquired |
| Dec. 14, 2005 | BMRN | Stock Options (right to buy) | Common Stock (30,000) | $10.33 | Dec. 14, 2015 | 30,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 17 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| April 15, 2021 | OKUR | Common Stock | 424,600 | Indirect |
| April 8, 2021 | OKUR | Common Stock | 134,084 | Indirect |
| April 8, 2021 | OKUR | Common Stock | 424,601 | Indirect |
| April 8, 2021 | OKUR | Stock option (right to buy)→ Common Stock (117,406) | 117,406 | Direct |
| April 8, 2021 | OKUR | Stock option (right to buy)→ Common Stock (32,403) | 32,403 | Direct |
| April 8, 2021 | OKUR | Stock option (right to buy)→ Common Stock (100,563) | 100,563 | Direct |
| April 8, 2021 | OKUR | Series A Preferred Stock→ Common Stock (20,162) | 20,162 | Indirect |
| Oct. 8, 2020 | SPRB | Stock Option (Right to Buy)→ Common Stock (68,796) | 68,796 | Direct |
| Oct. 8, 2020 | SPRB | Stock Option (Right to Buy)→ Common Stock (29,047) | 29,047 | Direct |
| Oct. 8, 2020 | SPRB | Stock Option (Right to Buy)→ Common Stock (94,174) | 94,174 | Direct |
| Oct. 8, 2020 | SPRB | Stock Option (Right to Buy)→ Common Stock (112,520) | 112,520 | Direct |
| July 17, 2019 | MIRM | Common Stock | 281,250 | Indirect |
| July 17, 2019 | MIRM | Common Stock | 93,750 | Indirect |
| July 17, 2019 | MIRM | Series A Preferred Stock→ Common Stock | — | Indirect |
| July 17, 2019 | MIRM | Stock Option (right to buy)→ Common Stock (375,000) | 375,000 | Direct |
| July 17, 2019 | MIRM | Stock Option (right to buy)→ Common Stock (262,500) | 262,500 | Direct |
| Dec. 21, 2005 | BMRN | Common Stock | 0 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2022 | $70,000 | — | — | $29,700 | — | — | — | $99,700 |
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2019 | $300,000 | $150,000 | — | $5,212,396 | — | — | — | $5,662,396 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.