Investor Ab insider trades: Nasdaq (NDAQ) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Investor Ab reports to the SEC
Open-market buys and sales
37 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 11, 2026 | NDAQ | ↑ Buy | 56,782 | $85.98 | $4.9M | Indirect | Jun 15, 2026 (4d) |
| May 29, 2014 | AGRX | ↑ Buy | 2,509,949 | $6.00 | $15.1M | Indirect | May 29, 2014 (0d) |
| May 22, 2014 | AGRX | ↑ Buy | 1,000,000 | $6.00 | $6.0M | Indirect | May 27, 2014 (5d) |
| May 23, 2012 | NDAQ | ↑ Buy | 100,000 | $21.71 | $2.2M | Indirect | May 25, 2012 (2d) |
| May 21, 2012 | NDAQ | ↑ Buy | 40,000 | $21.90 | $876K | Indirect | May 23, 2012 (2d) |
| May 14, 2012 | NDAQ | ↑ Buy | 300,000 | $23.53 | $7.1M | Indirect | May 16, 2012 (2d) |
| Aug 10, 2011 | NDAQ | ↑ Buy | 350,000 | $21.37 | $7.5M | Indirect | Aug 11, 2011 (1d) |
| Aug 5, 2011 | NDAQ | ↑ Buy | 200,000 | $22.75 | $4.5M | Indirect | Aug 9, 2011 (4d) |
| Aug 4, 2011 | NDAQ | ↑ Buy | 400,000 | $23.28 | $9.3M | Indirect | Aug 4, 2011 (0d) |
| Aug 1, 2011 | TNGO | ↓ Sell | 132,361 | $9.30 | $1.2M | Indirect | Aug 2, 2011 (1d) |
| Dec 31, 2009 | ACHN | ↓ Sell | 56,000 | $3.21 | $180K | Indirect | Jan 5, 2010 (5d) |
| Dec 31, 2009 | ACHN | ↓ Sell | 39,200 | $3.21 | $126K | Direct | Jan 5, 2010 (5d) |
| Dec 29, 2009 | ACHN | ↓ Sell | 147,946 | $3.16 | $467K | Indirect | Dec 30, 2009 (1d) |
| Dec 29, 2009 | ACHN | ↓ Sell | 103,562 | $3.16 | $327K | Direct | Dec 30, 2009 (1d) |
| Dec 17, 2009 | ACHN | ↓ Sell | 574,700 | $3.33 | $1.9M | Indirect | Dec 18, 2009 (1d) |
| Dec 17, 2009 | ACHN | ↓ Sell | 402,290 | $3.33 | $1.3M | Direct | Dec 18, 2009 (1d) |
| Dec 18, 2008 | ACHN | ↑ Buy | 275,000 | $0.95 | $263K | Indirect | Dec 22, 2008 (4d) |
| Dec 18, 2008 | ACHN | ↑ Buy | 192,500 | $0.95 | $184K | Direct | Dec 22, 2008 (4d) |
| Dec 9, 2008 | ACHN | ↑ Buy | 75,000 | $1.00 | $75K | Indirect | Dec 10, 2008 (1d) |
| Dec 9, 2008 | ACHN | ↑ Buy | 52,500 | $1.00 | $53K | Direct | Dec 10, 2008 (1d) |
| Dec 4, 2008 | ACHN | ↑ Buy | 200,000 | $1.00 | $201K | Indirect | Dec 8, 2008 (4d) |
| Nov 26, 2008 | ACHN | ↑ Buy | 24,700 | $1.00 | $25K | Indirect | Dec 1, 2008 (5d) |
| Jun 15, 2007 | ISTA | ↓ Sell | 13,611 | $8.10 | $110K | Indirect | Jun 19, 2007 (4d) |
| Jun 4, 2007 | ISTA | ↓ Sell | 21,231 | $8.17 | $173K | Indirect | Jun 4, 2007 (0d) |
| May 22, 2007 | ISTA | ↓ Sell | 40,000 | $7.50 | $300K | Indirect | May 22, 2007 (0d) |
| Apr 30, 2007 | ISTA | ↓ Sell | 4,742 | $10.25 | $49K | Indirect | May 2, 2007 (2d) |
| Apr 27, 2007 | ISTA | ↓ Sell | 118,880 | $10.04 | $1.2M | Indirect | Apr 30, 2007 (3d) |
| Mar 7, 2007 | ISTA | ↓ Sell | 61,500 | $8.64 | $531K | Indirect | Mar 8, 2007 (1d) |
| Feb 26, 2007 | ISTA | ↓ Sell | 15,000 | $8.36 | $125K | Indirect | Mar 1, 2007 (3d) |
| Feb 22, 2007 | ISTA | ↓ Sell | 30,490 | $8.06 | $246K | Indirect | Feb 22, 2007 (0d) |
| Feb 16, 2007 | ISTA | ↓ Sell | 10,891 | $8.13 | $89K | Indirect | Feb 16, 2007 (0d) |
| Feb 13, 2007 | ISTA | ↓ Sell | 71,100 | $8.06 | $573K | Indirect | Feb 13, 2007 (0d) |
| Jul 20, 2005 | ISTA | ↓ Sell | 30,000 | $9.78 | $294K | Indirect | Jul 22, 2005 (2d) |
| Jul 18, 2005 | ISTA | ↓ Sell | 26,020 | $9.20 | $239K | Indirect | Jul 19, 2005 (1d) |
| Jun 23, 2005 | ISTA | ↓ Sell | 25,000 | $8.75 | $219K | Indirect | Jun 24, 2005 (1d) |
| May 23, 2005 | ISTA | ↓ Sell | 15,000 | $8.66 | $130K | Indirect | May 23, 2005 (0d) |
| May 18, 2005 | ISTA | ↓ Sell | 10,000 | $8.50 | $85K | Indirect | May 20, 2005 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other NDAQ insiders
Open-market trades in the last 12 months
About Investor Ab's insider trades
Investor Ab is an insider at Nasdaq (NDAQ). Since May 18, 2005, it has reported 15 open-market purchases worth $58.2M and 22 sales worth $9.9M on SEC Form 4. In the last 12 months: 1 buy ($4.9M).
Its filings also include other transactions (2 filings), conversions (1 filing), option exercises (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 NDAQ insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.