KELLOGG PETER N
CIK 1226287 · View on SEC EDGAR ↗
Insider
First SEC filing: May 22, 2026 · Latest: May 22, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 48 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
48 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 12, 2011 | MRK | P | 200 | $31.80 | $6,360 | 53,999 Direct | +0.37% | Acquired | 398.8% (price as of 2026-08-19) |
| Aug. 12, 2011 | MRK | P | 1,635 | $31.77 | $51,944 | 53,799 Direct | +3.13% | Acquired | 399.3% (price as of 2026-08-19) |
| Aug. 12, 2011 | MRK | P | 4,000 | $31.80 | $127,200 | 52,164 Direct | +8.30% | Acquired | 398.8% (price as of 2026-08-19) |
| Aug. 12, 2011 | MRK | P | 4,155 | $31.78 | $132,046 | 48,164 Direct | +9.44% | Acquired | 399.2% (price as of 2026-08-19) |
| Aug. 12, 2011 | MRK | P | 5,810 | $31.81 | $184,816 | 44,009 Direct | +15.21% | Acquired | 398.7% (price as of 2026-08-19) |
| March 20, 2007 | BIIB | S 10b5-1 | 7,252 | $44.48 | $322,569 | 18,966 Direct | -27.66% | Disposed | 391.7% (price as of 2026-08-19) |
| Feb. 13, 2007 | BIIB | S 10b5-1 | 10,202 | $49.22 | $502,142 | 18,966 Direct | -34.98% | Disposed | 344.4% (price as of 2026-08-19) |
| Sept. 19, 2006 | BIIB | S 10b5-1 | 1,421 | $42.70 | $60,677 | 17,087 Direct | -7.68% | Disposed | 412.2% (price as of 2026-08-19) |
| Sept. 19, 2006 | BIIB | S 10b5-1 | 2,061 | $42.72 | $88,046 | 18,508 Direct | -10.02% | Disposed | 412.0% (price as of 2026-08-19) |
| Sept. 19, 2006 | BIIB | S 10b5-1 | 4,638 | $42.75 | $198,274 | 20,569 Direct | -18.40% | Disposed | 411.6% (price as of 2026-08-19) |
| Sept. 19, 2006 | BIIB | S 10b5-1 | 4,638 | $42.77 | $198,367 | 25,207 Direct | -15.54% | Disposed | 411.4% (price as of 2026-08-19) |
| Sept. 19, 2006 | BIIB | S 10b5-1 | 4,638 | $42.80 | $198,506 | 29,845 Direct | -13.45% | Disposed | 411.0% (price as of 2026-08-19) |
| Sept. 19, 2006 | BIIB | S 10b5-1 | 4,638 | $42.84 | $198,692 | 34,482 Direct | -11.86% | Disposed | 410.5% (price as of 2026-08-19) |
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 20, 2026 | ALNY | Stock Option (Right to Buy) | Common Stock (1,441) | $298.48 | May 20, 2036 | 1,441 | Acquired |
| Nov. 13, 2013 | MRK | Restricted Stock Unit | Common Stock (40,000) | — | Nov. 13, 2013 | 40,000 | Disposed |
| May 7, 2013 | MRK | Restricted Stock Unit | Common Stock (37,325) | — | May 7, 2013 | 37,325 | Disposed |
| May 6, 2013 | MRK | Stock Option (right to buy) | Common Stock (206,119) | $44.98 | May 5, 2023 | 206,119 | Acquired |
| May 2, 2012 | MRK | Stock Option (right to buy) | Common Stock (234,004) | $39.29 | May 1, 2022 | 234,004 | Acquired |
| May 2, 2012 | MRK | Restricted Stock Unit | Common Stock (16,289) | — | May 2, 2015 | 16,289 | Acquired |
| April 24, 2012 | MRK | Restricted Stock Unit | Common Stock (17,550) | — | April 24, 2012 | 17,550 | Disposed |
| May 4, 2011 | MRK | Stock Option (right to buy) | Common Stock (238,806) | $36.56 | May 3, 2021 | 238,806 | Acquired |
| May 4, 2011 | MRK | Restricted Stock Unit | Common Stock (17,505) | — | May 4, 2014 | 17,505 | Acquired |
| Feb. 28, 2011 | MRK | Restricted Stock Unit | Common Stock (11,700) | — | Feb. 28, 2011 | 11,700 | Disposed |
| Nov. 13, 2010 | MRK | Restricted Stock Unit | Common Stock (40,000) | — | Nov. 13, 2013 | 40,000 | Disposed |
| May 7, 2010 | MRK | Stock Option (right to buy) | Common Stock (210,084) | $33.49 | May 6, 2020 | 210,084 | Acquired |
| May 7, 2010 | MRK | Restricted Stock Unit | Common Stock (37,325) | — | May 7, 2013 | 37,325 | Acquired |
| Nov. 3, 2009 | MRK | Stock Option (right to buy) | Common Stock (93,600) | $23.45 | April 23, 2019 | 93,600 | Acquired |
| Nov. 3, 2009 | MRK | Stock Option (right to buy) | Common Stock (62,400) | $44.30 | Feb. 28, 2018 | 62,400 | Acquired |
| Nov. 3, 2009 | MRK | Stock Option (right to buy) | Common Stock (175,000) | $57.49 | Nov. 12, 2017 | 175,000 | Acquired |
| Nov. 3, 2009 | MRK | Restricted Stock Unit | Common Stock (17,550) | — | April 24, 2012 | 17,550 | Acquired |
| Nov. 3, 2009 | MRK | Restricted Stock Unit | Common Stock (11,700) | — | Feb. 28, 2011 | 11,700 | Acquired |
| Nov. 3, 2009 | MRK | Restricted Stock Unit | Common Stock (80,000) | — | Nov. 13, 2013 | 80,000 | Acquired |
| Feb. 12, 2007 | BIIB | Stock Option (right-to-buy) [F2] | Common Stock (29,800) | $49.31 | Feb. 11, 2017 | 29,800 | Acquired |
| Feb. 6, 2007 | BIIB | Restricted Stock Unit | Common Stock (8,534) | — | Feb. 6, 2007 | 8,534 | Disposed |
| Feb. 6, 2006 | BIIB | Restrcited Stock Units | Common Stock (25,600) | — | — | 25,600 | Acquired |
| Feb. 6, 2006 | BIIB | Stock option (right-to-buy) [F2] | Common Stock (64,100) | $44.24 | Feb. 5, 2016 | 64,100 | Acquired |
| Feb. 17, 2005 | BIIB | Stock Option (right-to-buy) [F1] | Common Stock (75,000) | $67.57 | Feb. 17, 2015 | 75,000 | Acquired |
| Feb. 6, 2004 | BIIB | NQ Stock Option (right to buy) | Common Stock (45,000) | $43.50 | Feb. 6, 2014 | 45,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).