Peter W. Sonsini insider trades: Arcellx (ACLX) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Peter reports to the SEC
and 33 more companies
Open-market buys and sales
82 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 21, 2022 | ACLX | ↑ Buy | 312,500 | $16.00 | $5.0M | Direct | Jun 23, 2022 (2d) |
| May 31, 2022 | IONQ | ↓ Sell | 2,922,966 | $5.84 | $17.1M | Direct | May 31, 2022 (0d) |
| May 25, 2022 | GNCA | ↓ Sell | 10,376,936 | $0.07 | $751K | See Note 2 | May 26, 2022 (1d) |
| Apr 11, 2022 | TRVI | ↑ Buy | 2,631,578 | $1.90 | $5.0M | See Note 2 | Apr 13, 2022 (2d) |
| Apr 11, 2022 | TRVI | ↑ Buy | 948,948 | $1.90 | $1.8M | See Note 3 | Apr 13, 2022 (2d) |
| Apr 6, 2022 | IMRA | ↓ Sell | 694,551 | $1.08 | $751K | Direct | Apr 7, 2022 (1d) |
| Feb 8, 2022 | ACLX | ↑ Buy | 1,583,333 | $15.00 | $23.7M | Direct | Feb 9, 2022 (1d) |
| Jan 25, 2022 | IMRA | ↓ Sell | 134,558 | $1.50 | $202K | Direct | Jan 25, 2022 (0d) |
| Jan 20, 2022 | IMRA | ↓ Sell | 26,555 | $1.83 | $49K | Direct | Jan 20, 2022 (0d) |
| Jan 14, 2022 | IMRA | ↓ Sell | 21,550 | $1.94 | $42K | Direct | Jan 14, 2022 (0d) |
| Jan 11, 2022 | IMRA | ↓ Sell | 18,760 | $2.07 | $39K | Direct | Jan 11, 2022 (0d) |
| Jan 6, 2022 | IMRA | ↓ Sell | 31,916 | $2.26 | $72K | Direct | Jan 6, 2022 (0d) |
| Jan 3, 2022 | IMRA | ↓ Sell | 116,476 | $2.29 | $267K | Direct | Jan 3, 2022 (0d) |
| Dec 29, 2021 | IMRA | ↓ Sell | 67,427 | $2.37 | $159K | Direct | Dec 29, 2021 (0d) |
| Dec 23, 2021 | IMRA | ↓ Sell | 291,152 | $2.36 | $688K | Direct | Dec 27, 2021 (4d) |
| Dec 22, 2021 | MTCR | ↓ Sell | 497,270 | $0.99 | $494K | See Note 1 | Dec 27, 2021 (5d) |
| Jun 28, 2021 | BHG | ↑ Buy | 1,694,444 | $18.00 | $30.5M | See Note 6 | Jun 30, 2021 (2d) |
| Jun 28, 2021 | GLUE | ↑ Buy | 1,050,000 | $19.00 | $19.9M | See Note 2 | Jun 30, 2021 (2d) |
| Jun 28, 2021 | BHG | ↑ Buy | 250,000 | $18.00 | $4.5M | See Note 5 | Jun 30, 2021 (2d) |
| Apr 13, 2021 | RPHM | ↑ Buy | 666,666 | $15.00 | $10.0M | Direct | Apr 15, 2021 (2d) |
| Mar 16, 2021 | MRKR | ↑ Buy | 5,714,285 | $1.75 | $10.0M | See Note 1 | Mar 18, 2021 (2d) |
| Dec 4, 2020 | RGLS | ↑ Buy | 4,398,602 | $0.62 | $2.7M | See Note 2 | Dec 7, 2020 (3d) |
| Oct 20, 2020 | EAR | ↑ Buy | 311,111 | $18.00 | $5.6M | See note 2 | Oct 22, 2020 (2d) |
| Sep 18, 2020 | MTCR | ↑ Buy | 769,230 | $13.00 | $10.0M | Indirect | Sep 22, 2020 (4d) |
| Jul 28, 2020 | INZY | ↑ Buy | 250,000 | $16.00 | $4.0M | See Note 2 | Jul 28, 2020 (0d) |
| Jul 24, 2020 | GNCA | ↑ Buy | 3,151,260 | $2.25 | $7.1M | See Note 2 | Jul 28, 2020 (4d) |
| Jul 14, 2020 | NKTK | ↑ Buy | 666,666 | $18.00 | $12.0M | See Note 2 | Jul 16, 2020 (2d) |
| Jun 30, 2020 | AKUS | ↑ Buy | 588,235 | $17.00 | $10.0M | See Note 2 | Jul 1, 2020 (1d) |
| Jun 19, 2020 | AVEO | ↑ Buy | 1,428,571 | $5.25 | $7.5M | See Note 2 | Jun 22, 2020 (3d) |
| May 20, 2020 | SURF | ↓ Sell | 420,000 | $3.66 | $1.5M | Direct | May 22, 2020 (2d) |
| Apr 3, 2020 | TRVI | ↓ Sell | 564 | $2.66 | $2K | See Note 1 | Apr 13, 2020 (10d) |
| Mar 16, 2020 | IMRA | ↑ Buy | 475,000 | $16.00 | $7.6M | Direct | Mar 16, 2020 (0d) |
| Mar 6, 2020 | CSBR | ↓ Sell | 708,155 | $6.99 | $5.0M | Direct | Mar 10, 2020 (4d) |
| Feb 10, 2020 | CSPR | ↑ Buy | 1,250,000 | $12.00 | $15.0M | Direct | Feb 12, 2020 (2d) |
| Jan 24, 2020 | ADAP | ↑ Buy | 7,500,000 | $0.67 | $5.0M | See Note 3 | Jan 28, 2020 (4d) |
| Nov 12, 2019 | GRTX | ↑ Buy | 416,666 | $12.00 | $5.0M | Direct | Nov 12, 2019 (0d) |
| Nov 4, 2019 | OYST | ↑ Buy | 935,000 | $16.00 | $15.0M | Direct | Nov 4, 2019 (0d) |
| Aug 28, 2019 | MRSN | ↓ Sell | 1,211 | $2.91 | $4K | Direct | Apr 13, 2020 (229d) |
| Jul 22, 2019 | MIRM | ↑ Buy | 450,000 | $15.00 | $6.8M | See Note 2 | Jul 24, 2019 (2d) |
| Jun 24, 2019 | GNCA | ↑ Buy | 2,857,142 | $3.50 | $10.0M | See Note 2 | Jun 25, 2019 (1d) |
| May 9, 2019 | TRVI | ↑ Buy | 2,500,000 | $10.00 | $25.0M | See Note 2 | May 13, 2019 (4d) |
| May 7, 2019 | RGLS | ↑ Buy | 1,136,704 | $1.08 | $1.2M | See Note 2 | May 9, 2019 (2d) |
| Apr 8, 2019 | AVEO | ↑ Buy | 4,347,827 | $1.14 | $5.0M | See Note 1 | Apr 8, 2019 (0d) |
| Mar 5, 2019 | MRSN | ↑ Buy | 3,750,000 | $4.00 | $15.0M | Direct | Mar 6, 2019 (1d) |
| Feb 14, 2019 | GNCA | ↑ Buy | 9,948,269 | $0.47 | $4.7M | See Note 2 | Feb 19, 2019 (5d) |
| Dec 21, 2018 | AVEO | ↑ Buy | 500,000 | $1.55 | $774K | See Note 2 | Dec 21, 2018 (0d) |
| Dec 11, 2018 | AVEO | ↑ Buy | 61,200 | $1.98 | $121K | See Note 2 | Dec 12, 2018 (1d) |
| Dec 10, 2018 | AVEO | ↑ Buy | 170,400 | $1.99 | $338K | See Note 2 | Dec 10, 2018 (0d) |
| Nov 30, 2018 | AVEO | ↑ Buy | 96,400 | $1.98 | $191K | See Note 2 | Nov 30, 2018 (0d) |
| Nov 20, 2018 | AVEO | ↑ Buy | 170,000 | $1.98 | $336K | See Note 2 | Nov 21, 2018 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other ACLX insiders
Open-market trades in the last 12 months
About Peter W. Sonsini's insider trades
Peter W. Sonsini is a 10% owner of Arcellx (ACLX). Since Aug 6, 2014, Peter has reported 63 open-market purchases worth $424.5M and 19 sales worth $93.9M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include other transactions (33 filings), conversions (28 filings), grants and awards (4 filings), option exercises (3 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 ACLX insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.