Michael E Marks insider trades: Berkeley Lights (BLI) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Michael reports to the SEC
and 4 more companies
Open-market buys and sales
95 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Mar 11, 2021 | BLI | ↓ Sell | 28,260 | $54.97 | $1.6M | By Marks Family Trust | Mar 15, 2021 (4d) |
| Mar 10, 2021 | BLI | ↓ Sell | 130,000 | $53.19 | $6.9M | By Marks Family Trust | Mar 11, 2021 (1d) |
| Mar 3, 2021 | BLI | ↓ Sell | 1,740 | $61.54 | $107K | By Marks Family Trust | Mar 5, 2021 (2d) |
| Mar 2, 2021 | BLI | ↓ Sell | 40,000 | $62.33 | $2.5M | By Mark Family Trust | Mar 3, 2021 (1d) |
| Dec 10, 2020 | BLI | ↓ Sell | 55,162 | $82.56 | $4.6M | Indirect | Dec 18, 2020 (8d) |
| Nov 23, 2020 | BLI | ↓ Sell | 362,586 | $82.56 | $29.9M | Indirect | Nov 25, 2020 (2d) |
| Sep 6, 2018 | SLB | ↑ Buy | 8,000 | $60.31 | $482K | by Trust | Sep 7, 2018 (1d) |
| Oct 26, 2017 | SLB | ↑ Buy | 16,000 | $63.56 | $1.0M | by Trust | Dec 3, 2018 (403d) |
| Aug 11, 2017 | SLB | ↑ Buy | 8,000 | $64.20 | $514K | by trust | Aug 14, 2017 (3d) |
| Feb 17, 2017 | GPRO | ↓ Sell | 30,000 | $9.22 | $277K | Direct | Feb 22, 2017 (5d) |
| Aug 31, 2016 | GPRO | ↓ Sell | 247 | $14.94 | $4K | By Riverwood Capital GP Ltd. | Sep 1, 2016 (1d) |
| Aug 31, 2016 | GPRO | ↓ Sell | 17 | $14.94 | $254 | By RWCP Capital GP Ltd. | Sep 1, 2016 (1d) |
| Aug 29, 2016 | SLB | ↓ Sell | 13,600 | $81.19 | $1.1M | by limited liability company | Aug 29, 2016 (0d) |
| Aug 15, 2016 | GPRO | ↓ Sell | 40,000 | $15.58 | $623K | Direct | Aug 17, 2016 (2d) |
| Aug 27, 2015 | SLB | ↑ Buy | 13,600 | $73.18 | $995K | by limited liability company | Aug 28, 2015 (1d) |
| Feb 26, 2015 | GPRO | ↓ Sell | 185,000 | $45.20 | $8.4M | By RW Camera Holdings LLC | Mar 2, 2015 (4d) |
| Feb 24, 2015 | GPRO | ↓ Sell | 300,000 | $44.32 | $13.3M | By RW Camera Holdings LLC | Feb 26, 2015 (2d) |
| Feb 20, 2015 | GPRO | ↓ Sell | 700,000 | $45.26 | $31.7M | By RW Camera Holdings LLC | Feb 23, 2015 (3d) |
| Feb 18, 2015 | GPRO | ↓ Sell | 5,000,000 | $46.56 | $232.8M | By RW Camera Holdings LLC | Feb 19, 2015 (1d) |
| Dec 3, 2014 | GPRO | ↓ Sell | 332,572 | $72.38 | $24.1M | By RW Camera Holdings LLC | Dec 4, 2014 (1d) |
| Nov 25, 2014 | GPRO | ↓ Sell | 1,627,400 | $72.38 | $117.8M | By RW Camera Holdings LLC | Nov 26, 2014 (1d) |
| Oct 30, 2014 | SNDK | ↓ Sell | 20,000 | $90.08 | $1.8M | Direct | Oct 31, 2014 (1d) |
| Oct 27, 2014 | SLB | ↑ Buy | 3,250 | $92.59 | $301K | By limited liability company | Oct 28, 2014 (1d) |
| Jul 1, 2014 | GPRO | ↓ Sell | 1,651,540 | $22.56 | $37.3M | By RW Camera Holdings LLC | Jul 1, 2014 (0d) |
| Jan 28, 2014 | SNDK | ↓ Sell | 10,000 | $69.59 | $696K | By Limited Liability Company | Jan 29, 2014 (1d) |
| Nov 8, 2013 | SNDK | ↓ Sell | 12,500 | $68.05 | $851K | Direct | Nov 8, 2013 (0d) |
| Nov 1, 2011 | SNDK | ↓ Sell | 64,000 | $48.74 | $3.1M | Direct | Nov 1, 2011 (0d) |
| Aug 11, 2011 | SLB | ↑ Buy | 2,700 | $74.60 | $201K | By limited liability company | Aug 11, 2011 (0d) |
| Jul 29, 2011 | SNDK | ↓ Sell | 9,473 | $42.99 | $407K | Direct | Jul 29, 2011 (0d) |
| Jul 26, 2011 | SNDK | ↓ Sell | 28,777 | $43.92 | $1.3M | Direct | Jul 28, 2011 (2d) |
| Dec 7, 2010 | CALX | ↓ Sell | 64,653 | $15.42 | $997K | Indirect | Dec 8, 2010 (1d) |
| Dec 3, 2010 | CALX | ↓ Sell | 13,267 | $15.25 | $202K | Indirect | Dec 6, 2010 (3d) |
| Dec 1, 2010 | CALX | ↓ Sell | 352,719 | $13.25 | $4.7M | Indirect | Dec 3, 2010 (2d) |
| Nov 24, 2010 | CALX | ↓ Sell | 9,440 | $13.00 | $123K | Indirect | Nov 29, 2010 (5d) |
| Nov 12, 2010 | SLB | ↓ Sell | 2,250 | $73.86 | $166K | By Marks Family Trust | Nov 15, 2010 (3d) |
| Nov 12, 2010 | SLB | ↓ Sell | 860 | $73.89 | $64K | By Amy G. Marks Trust | Nov 15, 2010 (3d) |
| Nov 12, 2010 | SLB | ↓ Sell | 500 | $73.89 | $37K | By Justin C. Marks Trust | Nov 15, 2010 (3d) |
| Nov 11, 2010 | CALX | ↓ Sell | 20,157 | $13.04 | $263K | Indirect | Nov 15, 2010 (4d) |
| Nov 9, 2010 | SNDK | ↓ Sell | 11,746 | $40.81 | $479K | By Marks Family Trust | Nov 9, 2010 (0d) |
| Nov 9, 2010 | SNDK | ↓ Sell | 6,000 | $40.81 | $245K | By Amy G Marks Trust | Nov 9, 2010 (0d) |
| Nov 1, 2010 | CALX | ↓ Sell | 100,000 | $12.40 | $1.2M | Indirect | Nov 3, 2010 (2d) |
| Apr 29, 2010 | SNDK | ↓ Sell | 20,000 | $41.77 | $835K | By Limited Liability Company | Apr 29, 2010 (0d) |
| Apr 27, 2010 | SNDK | ↓ Sell | 6,000 | $42.00 | $252K | By Justin Caine Marks Trust | Apr 27, 2010 (0d) |
| Mar 26, 2010 | CALX | ↓ Sell | 328,703 | $13.00 | $4.3M | Indirect | Mar 30, 2010 (4d) |
| Feb 26, 2010 | SLB | ↑ Buy | 3,300 | $60.75 | $200K | Direct | Mar 1, 2010 (3d) |
| May 13, 2009 | JAVA | ↓ Sell | 50,000 | $8.96 | $448K | By WB Investors, LLC | Oct 20, 2009 (160d) |
| May 13, 2009 | JAVA | ↓ Sell | 35,000 | $8.96 | $314K | By Epping Investment Holdings, LLC | Oct 20, 2009 (160d) |
| Aug 20, 2008 | JAVA | ↓ Sell | 90,000 | $10.00 | $900K | By Epping Investment Holdings, LLC | Aug 21, 2008 (1d) |
| Aug 15, 2008 | CROX | ↓ Sell | 714,808 | $4.53 | $3.2M | By WB Investors | Aug 19, 2008 (4d) |
| Jul 30, 2008 | CROX | ↓ Sell | 250,000 | $4.44 | $1.1M | Direct | Aug 15, 2008 (16d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About Michael E Marks's insider trades
Michael E Marks is a director at Berkeley Lights (BLI). Since Jun 2, 2005, Michael has reported 14 open-market purchases worth $15.2M and 81 sales worth $668.1M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (42 filings), option exercises (11 filings), conversions (7 filings), gifts (5 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every BLI insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.