Jack R Lazar insider trades: Astera Labs (ALAB) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Jack reports to the SEC
and 6 more companies
Open-market buys and sales
71 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 4, 2026 | ALAB | ↓ Sell | 10,000 | $355.17 | $3.6M | Direct | Jun 8, 2026 (4d) |
| Mar 16, 2026 | ALAB | ↓ Sell | 2,500 | $130.00 | $325K | Direct | Mar 17, 2026 (1d) |
| Mar 5, 2026 | ALAB | ↓ Sell | 7,500 | $119.80 | $898K | Direct | Mar 9, 2026 (4d) |
| Dec 4, 2025 | BOX | ↓ Sell | 2,500 | $31.77 | $79K | Direct | Dec 5, 2025 (1d) |
| Nov 20, 2025 | ALAB | ↓ Sell | 2,500 | $149.55 | $374K | Direct | Nov 21, 2025 (1d) |
| Sep 26, 2025 | BOX | ↓ Sell | 5,000 | $32.20 | $161K | Direct | Sep 30, 2025 (4d) |
| Aug 27, 2025 | ALAB | ↓ Sell | 22,500 | $178.42 | $4.0M | Direct | Aug 28, 2025 (1d) |
| Feb 18, 2025 | ALAB | ↓ Sell | 5,000 | $91.69 | $458K | Direct | Feb 20, 2025 (2d) |
| Nov 15, 2024 | ALAB | ↓ Sell | 12,500 | $86.44 | $1.1M | Direct | Nov 19, 2024 (4d) |
| Nov 12, 2024 | BOX | ↓ Sell | 2,500 | $34.75 | $87K | Direct | Nov 14, 2024 (2d) |
| Oct 11, 2024 | ALAB | ↓ Sell | 2,000 | $69.95 | $140K | Direct | Oct 15, 2024 (4d) |
| Oct 9, 2024 | ALAB | ↓ Sell | 3,000 | $61.69 | $185K | Direct | Oct 11, 2024 (2d) |
| Sep 23, 2024 | ALAB | ↓ Sell | 25,000 | $50.72 | $1.3M | Direct | Sep 25, 2024 (2d) |
| Sep 3, 2024 | TDUP | ↑ Buy | 20,000 | $0.94 | $19K | Direct | Sep 4, 2024 (1d) |
| Aug 30, 2024 | TDUP | ↑ Buy | 10,000 | $0.91 | $9K | Direct | Sep 3, 2024 (4d) |
| Aug 29, 2024 | BOX | ↓ Sell | 7,000 | $32.68 | $229K | Direct | Aug 30, 2024 (1d) |
| May 14, 2024 | REZI | ↓ Sell | 9,000 | $21.80 | $196K | Direct | May 16, 2024 (2d) |
| Mar 22, 2024 | ALAB | ↑ Buy | 10,000 | $36.00 | $360K | Direct | Mar 22, 2024 (0d) |
| Jun 15, 2023 | BOX | ↓ Sell | 5,000 | $29.95 | $150K | Direct | Jun 20, 2023 (5d) |
| Apr 5, 2023 | BOX | ↓ Sell | 5,000 | $26.95 | $135K | Direct | Apr 7, 2023 (2d) |
| Mar 9, 2022 | TDUP | ↑ Buy | 13,156 | $7.51 | $99K | Direct | Mar 11, 2022 (2d) |
| Sep 1, 2021 | SLAB | ↓ Sell | 1,353 | $160.00 | $216K | Direct | Sep 3, 2021 (2d) |
| Mar 30, 2021 | TDUP | ↑ Buy | 7,142 | $14.00 | $100K | Direct | Apr 1, 2021 (2d) |
| Jan 4, 2021 | SLAB | ↓ Sell10b5-1 | 1,500 | $129.75 | $195K | Direct | Jan 5, 2021 (1d) |
| Nov 18, 2020 | REZI | ↑ Buy | 6,666 | $15.00 | $100K | Direct | Nov 19, 2020 (1d) |
| Nov 9, 2020 | SLAB | ↓ Sell10b5-1 | 1,500 | $119.75 | $180K | Direct | Nov 10, 2020 (1d) |
| Jul 13, 2020 | SLAB | ↓ Sell10b5-1 | 1,000 | $104.75 | $105K | Direct | Jul 15, 2020 (2d) |
| Feb 10, 2020 | CSPR | ↑ Buy | 16,666 | $12.00 | $200K | Direct | Feb 12, 2020 (2d) |
| Nov 15, 2019 | REZI | ↑ Buy | 25,000 | $10.26 | $257K | Direct | Nov 18, 2019 (3d) |
| Apr 25, 2019 | SLAB | ↓ Sell10b5-1 | 750 | $109.75 | $82K | Direct | Apr 25, 2019 (0d) |
| Nov 5, 2018 | REZI | ↓ Sell | 18 | $24.35 | $438 | Direct | Nov 7, 2018 (2d) |
| Jun 11, 2018 | SLAB | ↓ Sell10b5-1 | 4,750 | $108.23 | $514K | Direct | Jun 11, 2018 (0d) |
| Nov 2, 2016 | QTNA | ↑ Buy | 15,000 | $16.00 | $240K | Direct | Nov 4, 2016 (2d) |
| Oct 5, 2016 | SLAB | ↓ Sell10b5-1 | 4,000 | $60.00 | $240K | Direct | Oct 7, 2016 (2d) |
| Sep 15, 2016 | SLAB | ↓ Sell10b5-1 | 4,000 | $55.92 | $224K | Direct | Sep 16, 2016 (1d) |
| Aug 11, 2016 | TUBE | ↓ Sell | 5,000 | $10.00 | $50K | Direct | Aug 18, 2016 (7d) |
| Aug 21, 2015 | SLAB | ↑ Buy | 3,500 | $42.03 | $147K | Direct | Aug 24, 2015 (3d) |
| Jul 22, 2015 | GPRO | ↓ Sell10b5-1 | 75,000 | $61.42 | $4.6M | Direct | Jul 24, 2015 (2d) |
| Jun 8, 2015 | GPRO | ↓ Sell10b5-1 | 25,000 | $59.90 | $1.5M | Direct | Jun 9, 2015 (1d) |
| May 28, 2015 | GPRO | ↓ Sell10b5-1 | 75,000 | $55.03 | $4.1M | Direct | Jun 1, 2015 (4d) |
| Nov 25, 2014 | GPRO | ↓ Sell | 18,000 | $72.38 | $1.3M | Direct | Nov 26, 2014 (1d) |
| Jul 23, 2014 | TUBE | ↑ Buy | 10,000 | $7.00 | $70K | Direct | Jul 25, 2014 (2d) |
| Aug 2, 2013 | SLAB | ↑ Buy | 5,000 | $40.23 | $201K | Direct | Aug 6, 2013 (4d) |
| May 10, 2010 | ATHR | ↓ Sell | 2,501 | $36.80 | $92K | Direct | May 11, 2010 (1d) |
| May 5, 2010 | ATHR | ↓ Sell | 1,598 | $37.59 | $60K | Direct | May 5, 2010 (0d) |
| Apr 12, 2010 | ATHR | ↓ Sell | 15,000 | $39.51 | $593K | Direct | Apr 12, 2010 (0d) |
| Feb 12, 2010 | ATHR | ↓ Sell | 25,000 | $34.51 | $863K | Direct | Feb 12, 2010 (0d) |
| Feb 9, 2010 | ATHR | ↓ Sell | 6,340 | $32.95 | $209K | Direct | Feb 9, 2010 (0d) |
| Feb 3, 2010 | ATHR | ↓ Sell | 30,619 | $33.38 | $1.0M | Direct | Feb 3, 2010 (0d) |
| Nov 9, 2009 | ATHR | ↓ Sell | 1,116 | $27.30 | $30K | Direct | Nov 10, 2009 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other ALAB insiders
Open-market trades in the last 12 months
About Jack R Lazar's insider trades
Jack R Lazar is a director at Astera Labs (ALAB). Since Feb 1, 2006, Jack has reported 12 open-market purchases worth $1.8M and 59 sales worth $41.3M on SEC Form 4. In the last 12 months: 5 sales ($5.2M).
10 sales (28% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.
Their filings also include grants and awards (77 filings), option exercises (30 filings), conversions (6 filings), shares returned to the company (6 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 ALAB insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.