DENNER ALEXANDER J
CIK 1361754 · View on SEC EDGAR ↗
Activist
First SEC filing: March 25, 2025 · Latest: March 25, 2025
On this page
Insider at
Insider transactions
0 buys (P)
2 sells (S)
Net:
$-20,530,448
+ 33 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
33 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 17, 2026 | IRWD | S | 5,800 | $3.31 | $19,198 | 9,188,635 Indirect | -0.06% | Disposed | 28.4% (price as of 2026-08-21) |
| March 17, 2026 | IRWD | S | 6,725,000 | $3.05 | $20,511,250 | 9,194,435 Indirect | -42.24% | Disposed | 39.3% (price as of 2026-08-21) |
| May 2, 2019 | BIIB | P | 38,000 | $231.24 | $8,787,120 | 643,000 Indirect | +6.28% | Acquired | -6.7% (price as of 2026-08-21) |
| May 1, 2019 | BIIB | P | 30,000 | $229.46 | $6,883,800 | 605,000 Indirect | +5.22% | Acquired | -6.0% (price as of 2026-08-21) |
| April 30, 2019 | BIIB | P | 50,342 | $229.25 | $11,540,904 | 575,000 Indirect | +9.60% | Acquired | -5.9% (price as of 2026-08-21) |
| Feb. 1, 2019 | BIIB | P | 7,000 | $328.45 | $2,299,150 | 524,658 Indirect | +1.35% | Acquired | -34.3% (price as of 2026-08-21) |
| Jan. 31, 2019 | BIIB | P | 25,800 | $330.52 | $8,527,416 | 517,658 Indirect | +5.25% | Acquired | -34.8% (price as of 2026-08-21) |
| Jan. 30, 2019 | BIIB | P | 30,000 | $324.86 | $9,745,800 | 491,858 Indirect | +6.50% | Acquired | -33.6% (price as of 2026-08-21) |
| April 25, 2018 | BIIB | P | 48,000 | $269.91 | $12,955,680 | 461,858 Indirect | +11.60% | Acquired | -20.1% (price as of 2026-08-21) |
| Nov. 29, 2017 | BIIB | P | 10,000 | $319.84 | $3,198,400 | 413,858 Indirect | +2.48% | Acquired | -32.6% (price as of 2026-08-21) |
| Nov. 28, 2017 | BIIB | P | 20,000 | $316.12 | $6,322,400 | 403,858 Indirect | +5.21% | Acquired | -31.8% (price as of 2026-08-21) |
| April 27, 2017 | BIIB | P | 15,000 | $278.58 | $4,178,700 | 325,000 Indirect | +4.84% | Acquired | -22.6% (price as of 2026-08-21) |
| April 27, 2017 | BIIB | P | 58,858 | $278.48 | $16,390,776 | 383,858 Indirect | +18.11% | Acquired | -22.6% (price as of 2026-08-21) |
| Oct. 23, 2015 | BIIB | P | 100,000 | $276.77 | $27,677,000 | 310,000 Indirect | +47.62% | Acquired | -22.1% (price as of 2026-08-21) |
| Oct. 22, 2015 | BIIB | P | 210,000 | $277.80 | $58,338,000 | 210,000 Indirect | — | Acquired | -22.4% (price as of 2026-08-21) |
| June 14, 2013 | BIIB | S 10b5-1 | 2,900 | $212.00 | $614,800 | 6,325 Direct | -31.44% | Disposed | 1.7% (price as of 2026-08-21) |
| May 28, 2013 | BIIB | S 10b5-1 | 1,175 | $239.85 | $281,824 | 4,920 Direct | -19.28% | Disposed | -10.1% (price as of 2026-08-21) |
| May 28, 2013 | BIIB | S 10b5-1 | 1,500 | $238.87 | $358,305 | 6,095 Direct | -19.75% | Disposed | -9.7% (price as of 2026-08-21) |
| May 28, 2013 | BIIB | S 10b5-1 | 300 | $237.38 | $71,214 | 7,595 Direct | -3.80% | Disposed | -9.2% (price as of 2026-08-21) |
| May 28, 2013 | BIIB | S 10b5-1 | 906 | $242.40 | $219,614 | 4,920 Direct | -15.55% | Disposed | -11.0% (price as of 2026-08-21) |
| May 28, 2013 | BIIB | S 10b5-1 | 12,094 | $241.92 | $2,925,780 | 5,826 Direct | -67.49% | Disposed | -10.9% (price as of 2026-08-21) |
| May 28, 2013 | BIIB | S 10b5-1 | 7,500 | $240.75 | $1,805,625 | 17,920 Direct | -29.50% | Disposed | -10.4% (price as of 2026-08-21) |
| May 28, 2013 | BIIB | S 10b5-1 | 11,300 | $239.95 | $2,711,435 | 25,420 Direct | -30.77% | Disposed | -10.1% (price as of 2026-08-21) |
| May 28, 2013 | BIIB | S 10b5-1 | 900 | $239.04 | $215,136 | 36,720 Direct | -2.39% | Disposed | -9.8% (price as of 2026-08-21) |
| May 28, 2013 | BIIB | S 10b5-1 | 2,300 | $237.73 | $546,779 | 37,620 Direct | -5.76% | Disposed | -9.3% (price as of 2026-08-21) |
| Dec. 27, 2012 | BIIB | S 10b5-1 | 1,300 | $149.04 | $193,752 | 4,920 Direct | -20.90% | Disposed | 44.7% (price as of 2026-08-21) |
| Dec. 27, 2012 | BIIB | S 10b5-1 | 2,691 | $148.02 | $398,322 | 6,220 Direct | -30.20% | Disposed | 45.7% (price as of 2026-08-21) |
| Dec. 26, 2012 | BIIB | S 10b5-1 | 3,989 | $148.89 | $593,922 | 8,911 Direct | -30.92% | Disposed | 44.8% (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| May 29, 2013 | BIIB | Stock Option (Right to Buy) | Common Stock (3,000) | — | June 2, 2019 | 3,000 | Disposed |
| May 28, 2013 | BIIB | Stock Option (Right to Buy) | Common Stock (2,975) | — | June 2, 2019 | 2,975 | Disposed |
| May 28, 2013 | BIIB | Stock Option (Right to Buy) | Common Stock (35,000) | — | June 2, 2019 | 35,000 | Disposed |
| June 10, 2009 | BIIB | Stock Option | Common Stock (5,975) | — | June 2, 2019 | 5,975 | Acquired |
| June 10, 2009 | BIIB | Stock Option | Common Stock (35,000) | — | June 2, 2019 | 35,000 | Acquired |
| June 30, 2008 | SVRA | OPTION TO PURCHASE COMMON STOCK | COMMON STOCK (50,000) | $0.37 | June 29, 2018 | 50,000 | Acquired |
| March 24, 2008 | SVRA | OPTION TO PURCHASE COMMON STOCK | COMMON STOCK (50,000) | $0.48 | March 24, 2018 | 50,000 | Acquired |
| May 23, 2007 | SVRA | OPTION TO PURCHASE COMMON STOCK | COMMON STOCK (50,000) | $2.57 | May 23, 2017 | 50,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Nov. 9, 2020 | IRWD | Class A Common Stock | 14,040,000 | Indirect |