Michael J Bayer
Insider
First SEC filing: Aug. 18, 2006 · Latest: Aug. 18, 2006
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 4, 2019 | SIGA | P | 12,500 | $5.74 | $71,750 | 132,244 Direct | +10.44% | Acquired | -41.1% (price as of 2026-10-02) |
| May 22, 2019 | SIGA | M | 15,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 22, 2019 | SIGA | M | 15,000 | · | · | 134,744 Direct | +12.53% | Acquired | (price as of 2026-10-02) |
| May 21, 2019 | SIGA | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Oct. 16, 2018 | SIGA | M | 25,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Oct. 16, 2018 | SIGA | F | 14,756 | $5.32 | $78,502 | 119,744 Direct | -10.97% | Disposed | -36.5% (price as of 2026-10-02) |
| Oct. 16, 2018 | SIGA | M | 25,000 | $3.14 | $78,500 | 134,500 Direct | +22.83% | Acquired | 7.6% (price as of 2026-10-02) |
| May 23, 2018 | SIGA | M | 15,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 23, 2018 | SIGA | M | 15,000 | · | · | 109,500 Direct | +15.87% | Acquired | (price as of 2026-10-02) |
| May 22, 2018 | SIGA | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 23, 2017 | SIGA | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 17, 2017 | SIGA | M | 15,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 17, 2017 | SIGA | M | 15,000 | · | · | 94,500 Direct | +18.87% | Acquired | (price as of 2026-10-02) |
| Nov. 16, 2016 | SIGA | M | 19,500 | $29250.00 | $570,375,000 | 79,500 Direct | +32.50% | Acquired | -100.0% (price as of 2026-10-02) |
| May 17, 2016 | SIGA | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 14, 2016 | SIGA | M | 15,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 14, 2016 | SIGA | M | 15,000 | · | · | 60,000 Direct | +33.33% | Acquired | (price as of 2026-10-02) |
| May 15, 2015 | SIGA | M | 15,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 15, 2015 | SIGA | M | 15,000 | · | · | 45,000 Direct | +50.00% | Acquired | (price as of 2026-10-02) |
| May 14, 2015 | SIGA | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Oct. 16, 2014 | SIGA | S | 13,960 | $1.49 | $20,800 | 119,744 Direct | -10.44% | Disposed | 126.8% (price as of 2026-10-02) |
| May 15, 2014 | SIGA | M | 15,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 15, 2014 | SIGA | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 15, 2014 | SIGA | M | 15,000 | · | · | 30,000 Direct | +100.00% | Acquired | (price as of 2026-10-02) |
| Sept. 17, 2013 | SIGA | P | 8,284 | $3.59 | $29,740 | 13,960 Direct | +145.95% | Acquired | -5.8% (price as of 2026-10-02) |
| Sept. 17, 2013 | SIGA | P | 9,324 | $3.59 | $33,473 | 15,000 Direct | +164.27% | Acquired | -5.8% (price as of 2026-10-02) |
| Sept. 16, 2013 | SIGA | P | 5,676 | $3.57 | $20,263 | 5,676 Direct | · | Acquired | -5.3% (price as of 2026-10-02) |
| Sept. 13, 2013 | SIGA | S | 3,378 | $3.53 | $11,924 | 0 Direct | -100.00% | Disposed | -4.2% (price as of 2026-10-02) |
| Sept. 12, 2013 | SIGA | S | 11,622 | $3.55 | $41,258 | 3,378 Direct | -77.48% | Disposed | -4.8% (price as of 2026-10-02) |
| May 23, 2013 | SIGA | M | 15,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 23, 2013 | SIGA | M | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 15, 2013 | SIGA | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 23, 2012 | SIGA | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 17, 2011 | SIGA | A | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 13, 2010 | SIGA | A | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 13, 2009 | SIGA | A | 10,000 | · | · | 35,000 Direct | +40.00% | Acquired | (price as of 2026-10-02) |
| Aug. 16, 2006 | CACI | A | 90 | $50.13 | $4,512 | 14,868 Direct | +0.61% | Acquired | 1126.9% (price as of 2026-10-02) |
| June 15, 2006 | CACI | A | 73 | $62.39 | $4,554 | 14,778 Direct | +0.50% | Acquired | 885.8% (price as of 2026-10-02) |
| March 16, 2006 | CACI | A | 70 | $65.04 | $4,553 | 14,705 Direct | +0.48% | Acquired | 845.6% (price as of 2026-10-02) |
| Nov. 17, 2005 | CACI | A | 13 | $53.97 | $702 | 14,635 Direct | +0.09% | Acquired | 1039.6% (price as of 2026-10-02) |
| Nov. 17, 2005 | CACI | A | 71 | $53.97 | $3,832 | 14,622 Direct | +0.49% | Acquired | 1039.6% (price as of 2026-10-02) |
| Nov. 17, 2005 | CACI | A | 3,000 | $53.97 | $161,910 | 14,551 Direct | +25.97% | Acquired | 1039.6% (price as of 2026-10-02) |
| Dec. 1, 2004 | CACI | A | 3,000 | $64.36 | $193,080 | 11,251 Direct | +36.36% | Acquired | 855.6% (price as of 2026-10-02) |
| June 12, 2004 | CACI | A | 92 | $37.55 | $3,455 | 11,551 Direct | +0.80% | Acquired | 1537.9% (price as of 2026-10-02) |
| March 18, 2004 | CACI | A | 82 | $41.97 | $3,442 | 11,148 Direct | +0.74% | Acquired | 1365.4% (price as of 2026-10-02) |
| March 17, 2004 | CACI | P | 57 | $43.41 | $2,474 | 896 Direct | +6.79% | Acquired | 1316.8% (price as of 2026-10-02) |
| Feb. 2, 2004 | CACI | A | 78 | $43.73 | $3,411 | 8,251 Direct | +0.95% | Acquired | 1306.4% (price as of 2026-10-02) |
| Feb. 2, 2004 | CACI | P | 78 | $43.73 | $3,411 | 839 Direct | +10.25% | Acquired | 1306.4% (price as of 2026-10-02) |
| Dec. 19, 2003 | CACI | P | 50 | $46.86 | $2,343 | 761 Direct | +7.03% | Acquired | 1212.5% (price as of 2026-10-02) |
| Dec. 11, 2003 | CACI | P | 25 | $47.84 | $1,196 | 711 Direct | +3.64% | Acquired | 1185.6% (price as of 2026-10-02) |
| Nov. 20, 2003 | CACI | A | 64 | $49.43 | $3,164 | 11,459 Direct | +0.56% | Acquired | 1144.3% (price as of 2026-10-02) |
| Nov. 20, 2003 | CACI | A | 3,000 | $49.43 | $148,290 | 8,173 Direct | +57.99% | Acquired | 1144.3% (price as of 2026-10-02) |
| Aug. 13, 2003 | CACI | A | 79 | $39.68 | $3,135 | 11,395 Direct | +0.70% | Acquired | 1450.0% (price as of 2026-10-02) |
| June 12, 2003 | CACI | A | 66 | $34.43 | $2,272 | 11,066 Direct | +0.60% | Acquired | 1686.3% (price as of 2026-10-02) |
| March 13, 2003 | CACI | A | 93 | $31.13 | $2,895 | 11,316 Direct | +0.83% | Acquired | 1875.7% (price as of 2026-10-02) |
| Nov. 21, 2002 | CACI | A | 75 | $38.68 | $2,901 | 11,223 Direct | +0.67% | Acquired | 1490.1% (price as of 2026-10-02) |
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 22, 2019 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Disposed |
| May 21, 2019 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Acquired |
| Oct. 16, 2018 | SIGA | Stock Option (Right to buy) | Common Stock, par value $.0001 per share | $3.14 | Oct. 30, 2018 | 25,000 | Disposed |
| May 23, 2018 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Disposed |
| May 22, 2018 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Acquired |
| May 23, 2017 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Acquired |
| May 17, 2017 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Disposed |
| May 17, 2016 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Acquired |
| May 14, 2016 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Disposed |
| May 15, 2015 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Disposed |
| May 14, 2015 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Acquired |
| May 15, 2014 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Disposed |
| May 15, 2014 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Acquired |
| May 23, 2013 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Disposed |
| May 15, 2013 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Acquired |
| May 23, 2012 | SIGA | Restricted Stock Units | Common Stock, par value $.0001 per share | · | · | 15,000 | Acquired |
| May 17, 2011 | SIGA | Stock Option (Right to buy) | Common Stock, par value $.0001 per share | $14.22 | May 17, 2021 | 10,000 | Acquired |
| May 13, 2010 | SIGA | Stock Option (Right to buy) | Common Stock, par value $.0001 per share | $7.71 | May 13, 2020 | 10,000 | Acquired |
| May 13, 2009 | SIGA | Stock Option (Right to buy) | Common Stock, par value $.0001 per share | $6.17 | May 13, 2019 | 10,000 | Acquired |
| Aug. 16, 2006 | CACI | CACI Common (Restricted Stock Units) | CACI Common | $50.13 | Aug. 15, 2013 | 90 | Acquired |
| June 15, 2006 | CACI | CACI Common (Restricted Shares) | CACI Common | $62.39 | June 14, 2013 | 73 | Acquired |
| March 16, 2006 | CACI | CACI Common (Restricted Stock Unit) | CACI Common | $65.04 | March 15, 2013 | 70 | Acquired |
| Nov. 17, 2005 | CACI | CACI Common (Restricted Stock Unit) | CACI Common | $53.97 | Nov. 16, 2012 | 13 | Acquired |
| Nov. 17, 2005 | CACI | CACI Common (Restricted Stock Unit) | CACI Common | $53.97 | Nov. 16, 2012 | 71 | Acquired |
| Nov. 17, 2005 | CACI | CACI Common (Right to Buy) | CACI Common | $53.97 | Nov. 16, 2010 | 3,000 | Acquired |
| Dec. 1, 2004 | CACI | CACI Common (Right to Buy) | CACI Common | $64.36 | Nov. 30, 2009 | 3,000 | Acquired |
| June 12, 2004 | CACI | CACI Common (Restricted Stock Unit) | CACI Common | $37.55 | June 16, 2011 | 92 | Acquired |
| March 18, 2004 | CACI | CACI Common (Restricted Stock Unit) | CACI Common | · | March 17, 2011 | 82 | Acquired |
| Feb. 2, 2004 | CACI | CACI Common (Restricted Stock Unit) | CACI Common | $43.73 | · | 78 | Acquired |
| Nov. 20, 2003 | CACI | CACI Common (Restricted Stock Unit) | CACI Common | $49.43 | Nov. 19, 2010 | 64 | Acquired |
| Nov. 20, 2003 | CACI | CACI Common (Right to Buy) | CACI Common | $49.43 | Nov. 19, 2008 | 3,000 | Acquired |
| Aug. 13, 2003 | CACI | CACI Common (Restricted Stock Unit) | CACI Common | $39.68 | Aug. 12, 2010 | 79 | Acquired |
| June 12, 2003 | CACI | CACI Common (Restricted Stock Unit) | CACI Common | · | June 11, 2010 | 66 | Acquired |
| March 13, 2003 | CACI | CACI Common (Restricted Stock Unit) | CACI Common | $31.13 | March 12, 2010 | 93 | Acquired |
| Nov. 21, 2002 | CACI | CACI Common (Restricted Stock Unit) | CACI Common | $38.68 | Nov. 20, 2009 | 75 | 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. 7, 2008 | SIGA | Stock Option (Right to buy) | 25,000 | Direct |