Necip Sayiner insider trades: Axcelis Technologies (ACLS) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Necip reports to the SEC
and 1 more company
Open-market buys and sales
76 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 3, 2026 | ACLS | ↓ Sell | 1,586 | $157.44 | $250K | Direct | Jun 4, 2026 (1d) |
| Jun 3, 2026 | RMBS | ↓ Sell | 5,000 | $170.15 | $851K | Direct | Jun 3, 2026 (0d) |
| May 8, 2026 | RMBS | ↓ Sell | 9,824 | $130.18 | $1.3M | Direct | May 11, 2026 (3d) |
| May 8, 2026 | SNDK | ↓ Sell | 579 | $1503.11 | $870K | Direct | May 11, 2026 (3d) |
| Dec 3, 2025 | SNDK | ↓ Sell | 1,271 | $195.14 | $248K | Direct | Dec 4, 2025 (1d) |
| Sep 11, 2025 | RMBS | ↓ Sell | 7,500 | $85.63 | $642K | Direct | Sep 12, 2025 (1d) |
| Aug 8, 2025 | RMBS | ↓ Sell | 7,500 | $73.53 | $551K | Direct | Aug 11, 2025 (3d) |
| Feb 19, 2025 | RMBS | ↓ Sell | 4,625 | $66.74 | $309K | Direct | Feb 19, 2025 (0d) |
| Nov 6, 2023 | RMBS | ↓ Sell | 10,000 | $57.43 | $574K | Direct | Nov 7, 2023 (1d) |
| May 26, 2023 | POWI | ↓ Sell | 4,500 | $89.95 | $405K | Direct | May 30, 2023 (4d) |
| Feb 14, 2023 | POWI | ↓ Sell | 1,234 | $84.52 | $104K | Direct | Feb 16, 2023 (2d) |
| Feb 10, 2023 | RMBS | ↓ Sell | 2,873 | $45.53 | $131K | Direct | Feb 13, 2023 (3d) |
| Nov 15, 2022 | RMBS | ↓ Sell | 15,000 | $38.16 | $572K | Direct | Nov 16, 2022 (1d) |
| Aug 25, 2021 | POWI | ↓ Sell | 2,500 | $104.53 | $261K | Direct | Aug 27, 2021 (2d) |
| Aug 4, 2020 | POWI | ↓ Sell | 1,725 | $120.17 | $207K | Direct | Aug 6, 2020 (2d) |
| May 4, 2016 | ISIL | ↑ Buy | 22,000 | $11.61 | $255K | Direct | May 4, 2016 (0d) |
| Sep 11, 2015 | ISIL | ↑ Buy | 38,000 | $10.47 | $398K | Direct | Sep 11, 2015 (0d) |
| Apr 18, 2012 | SLAB | ↓ Sell10b5-1 | 3,435 | $41.88 | $144K | Direct | Apr 20, 2012 (2d) |
| Mar 21, 2012 | SLAB | ↓ Sell10b5-1 | 3,435 | $43.51 | $149K | Direct | Mar 23, 2012 (2d) |
| Feb 15, 2012 | SLAB | ↓ Sell10b5-1 | 3,435 | $45.00 | $155K | Direct | Feb 17, 2012 (2d) |
| Jan 25, 2012 | SLAB | ↓ Sell10b5-1 | 76,508 | $47.40 | $3.6M | Direct | Jan 26, 2012 (1d) |
| Jan 18, 2012 | SLAB | ↓ Sell10b5-1 | 32,935 | $44.74 | $1.5M | Direct | Jan 20, 2012 (2d) |
| Apr 27, 2011 | SLAB | ↓ Sell10b5-1 | 4,300 | $45.75 | $197K | Direct | Apr 28, 2011 (1d) |
| Feb 17, 2011 | SLAB | ↓ Sell10b5-1 | 2,150 | $46.74 | $100K | Direct | Feb 22, 2011 (5d) |
| Jan 20, 2011 | SLAB | ↓ Sell10b5-1 | 2,000 | $47.53 | $95K | Direct | Jan 24, 2011 (4d) |
| Dec 15, 2010 | SLAB | ↓ Sell10b5-1 | 2,250 | $46.39 | $104K | Direct | Dec 17, 2010 (2d) |
| Nov 17, 2010 | SLAB | ↓ Sell10b5-1 | 2,250 | $40.94 | $92K | Direct | Nov 17, 2010 (0d) |
| Oct 22, 2010 | SLAB | ↓ Sell10b5-1 | 2,250 | $38.29 | $86K | Direct | Oct 25, 2010 (3d) |
| Oct 15, 2010 | SLAB | ↓ Sell10b5-1 | 2,250 | $38.29 | $86K | Direct | Oct 18, 2010 (3d) |
| Aug 18, 2010 | SLAB | ↓ Sell10b5-1 | 2,250 | $39.90 | $90K | Direct | Aug 20, 2010 (2d) |
| Jul 21, 2010 | SLAB | ↓ Sell10b5-1 | 2,250 | $42.45 | $96K | Direct | Jul 23, 2010 (2d) |
| Jun 16, 2010 | SLAB | ↓ Sell10b5-1 | 2,250 | $45.78 | $103K | Direct | Jun 16, 2010 (0d) |
| May 19, 2010 | SLAB | ↓ Sell10b5-1 | 2,250 | $45.23 | $102K | Direct | May 21, 2010 (2d) |
| Apr 21, 2010 | SLAB | ↓ Sell10b5-1 | 2,250 | $50.54 | $114K | Direct | Apr 23, 2010 (2d) |
| Apr 15, 2010 | SLAB | ↓ Sell10b5-1 | 55,000 | $52.52 | $2.9M | Direct | Apr 19, 2010 (4d) |
| Apr 7, 2010 | SLAB | ↓ Sell10b5-1 | 48,000 | $50.33 | $2.4M | Direct | Apr 9, 2010 (2d) |
| Mar 17, 2010 | SLAB | ↓ Sell10b5-1 | 2,250 | $47.71 | $107K | Direct | Mar 18, 2010 (1d) |
| Feb 17, 2010 | SLAB | ↓ Sell10b5-1 | 2,250 | $45.74 | $103K | Direct | Feb 17, 2010 (0d) |
| Jan 20, 2010 | SLAB | ↓ Sell10b5-1 | 2,250 | $44.76 | $101K | Direct | Jan 22, 2010 (2d) |
| Jan 4, 2010 | SLAB | ↓ Sell10b5-1 | 97,000 | $48.05 | $4.7M | Direct | Jan 6, 2010 (2d) |
| Dec 15, 2009 | SLAB | ↓ Sell10b5-1 | 2,250 | $45.27 | $102K | Direct | Dec 17, 2009 (2d) |
| Nov 17, 2009 | SLAB | ↓ Sell10b5-1 | 2,250 | $43.91 | $99K | Direct | Nov 18, 2009 (1d) |
| Oct 20, 2009 | SLAB | ↓ Sell10b5-1 | 2,250 | $44.78 | $101K | Direct | Oct 20, 2009 (0d) |
| Sep 15, 2009 | SLAB | ↓ Sell10b5-1 | 2,250 | $48.13 | $108K | Direct | Sep 16, 2009 (1d) |
| Sep 8, 2009 | SLAB | ↓ Sell10b5-1 | 30,000 | $47.54 | $1.4M | Direct | Sep 10, 2009 (2d) |
| Aug 28, 2009 | SLAB | ↓ Sell10b5-1 | 30,500 | $44.74 | $1.4M | Direct | Aug 31, 2009 (3d) |
| Aug 18, 2009 | SLAB | ↓ Sell10b5-1 | 2,250 | $41.33 | $93K | Direct | Aug 19, 2009 (1d) |
| Jul 21, 2009 | SLAB | ↓ Sell10b5-1 | 2,250 | $38.63 | $87K | Direct | Jul 22, 2009 (1d) |
| Jul 1, 2009 | SLAB | ↓ Sell10b5-1 | 3,500 | $39.15 | $137K | Direct | Jul 2, 2009 (1d) |
| Jun 9, 2009 | SLAB | ↓ Sell10b5-1 | 2,250 | $37.80 | $85K | Direct | Jun 11, 2009 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other ACLS insiders
Open-market trades in the last 12 months
About Necip Sayiner's insider trades
Necip Sayiner is an insider at Axcelis Technologies (ACLS). Since Nov 14, 2006, Necip has reported 2 open-market purchases worth $654K and 74 sales worth $30.3M on SEC Form 4. In the last 12 months: 5 sales ($3.5M).
39 sales (71% 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 (33 filings), shares withheld for taxes (16 filings), option exercises (15 filings), shares returned to the company (1 filing). 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 ACLS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.