Michael J Bayer

CIK 1230974 · View on SEC EDGAR ↗

Insider

First SEC filing: Aug. 18, 2006 · Latest: Aug. 18, 2006

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 45 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

45 other filings hidden
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 -46.9% (price as of 2026-08-19)
Oct. 16, 2014 SIGA S 13,960 $1.49 $20,800 119,744 Direct -10.44% Disposed 104.7% (price as of 2026-08-19)
Sept. 17, 2013 SIGA P 8,284 $3.59 $29,740 13,960 Direct +145.95% Acquired -15.0% (price as of 2026-08-19)
Sept. 17, 2013 SIGA P 9,324 $3.59 $33,473 15,000 Direct +164.27% Acquired -15.0% (price as of 2026-08-19)
Sept. 16, 2013 SIGA P 5,676 $3.57 $20,263 5,676 Direct — Acquired -14.6% (price as of 2026-08-19)
Sept. 13, 2013 SIGA S 3,378 $3.53 $11,924 0 Direct -100.00% Disposed -13.6% (price as of 2026-08-19)
Sept. 12, 2013 SIGA S 11,622 $3.55 $41,258 3,378 Direct -77.48% Disposed -14.1% (price as of 2026-08-19)
March 17, 2004 CACI P 57 $43.41 $2,474 896 Direct +6.79% Acquired 1420.2% (price as of 2026-08-19)
Feb. 2, 2004 CACI P 78 $43.73 $3,411 839 Direct +10.25% Acquired 1409.1% (price as of 2026-08-19)
Dec. 19, 2003 CACI P 50 $46.86 $2,343 761 Direct +7.03% Acquired 1308.3% (price as of 2026-08-19)
Dec. 11, 2003 CACI P 25 $47.84 $1,196 711 Direct +3.64% Acquired 1279.4% (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 22, 2019 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Disposed
May 21, 2019 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Acquired
Oct. 16, 2018 SIGA Stock Option (Right to buy) Common Stock, par value $.0001 per share (25,000) $3.14 Oct. 30, 2018 25,000 Disposed
May 23, 2018 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Disposed
May 22, 2018 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Acquired
May 23, 2017 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Acquired
May 17, 2017 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Disposed
May 17, 2016 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Acquired
May 14, 2016 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Disposed
May 15, 2015 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Disposed
May 14, 2015 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Acquired
May 15, 2014 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Disposed
May 15, 2014 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Acquired
May 23, 2013 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Disposed
May 15, 2013 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Acquired
May 23, 2012 SIGA Restricted Stock Units Common Stock, par value $.0001 per share (15,000) — — 15,000 Acquired
May 17, 2011 SIGA Stock Option (Right to buy) Common Stock, par value $.0001 per share (10,000) $14.22 May 17, 2021 10,000 Acquired
May 13, 2010 SIGA Stock Option (Right to buy) Common Stock, par value $.0001 per share (10,000) $7.71 May 13, 2020 10,000 Acquired
May 13, 2009 SIGA Stock Option (Right to buy) Common Stock, par value $.0001 per share (10,000) $6.17 May 13, 2019 10,000 Acquired
Aug. 16, 2006 CACI CACI Common (Restricted Stock Units) CACI Common (90) $50.13 Aug. 15, 2013 90 Acquired
June 15, 2006 CACI CACI Common (Restricted Shares) CACI Common (73) $62.39 June 14, 2013 73 Acquired
March 16, 2006 CACI CACI Common (Restricted Stock Unit) CACI Common (70) $65.04 March 15, 2013 70 Acquired
Nov. 17, 2005 CACI CACI Common (Restricted Stock Unit) CACI Common (13) $53.97 Nov. 16, 2012 13 Acquired
Nov. 17, 2005 CACI CACI Common (Restricted Stock Unit) CACI Common (71) $53.97 Nov. 16, 2012 71 Acquired
Nov. 17, 2005 CACI CACI Common (Right to Buy) CACI Common (3,000) $53.97 Nov. 16, 2010 3,000 Acquired
Dec. 1, 2004 CACI CACI Common (Right to Buy) CACI Common (3,000) $64.36 Nov. 30, 2009 3,000 Acquired
June 12, 2004 CACI CACI Common (Restricted Stock Unit) CACI Common (92) $37.55 June 16, 2011 92 Acquired
March 18, 2004 CACI CACI Common (Restricted Stock Unit) CACI Common (82) — March 17, 2011 82 Acquired
Feb. 2, 2004 CACI CACI Common (Restricted Stock Unit) CACI Common (78) $43.73 — 78 Acquired
Nov. 20, 2003 CACI CACI Common (Restricted Stock Unit) CACI Common (64) $49.43 Nov. 19, 2010 64 Acquired
Nov. 20, 2003 CACI CACI Common (Right to Buy) CACI Common (3,000) $49.43 Nov. 19, 2008 3,000 Acquired
Aug. 13, 2003 CACI CACI Common (Restricted Stock Unit) CACI Common (79) $39.68 Aug. 12, 2010 79 Acquired
June 12, 2003 CACI CACI Common (Restricted Stock Unit) CACI Common (66) — June 11, 2010 66 Acquired
March 13, 2003 CACI CACI Common (Restricted Stock Unit) CACI Common (93) $31.13 March 12, 2010 93 Acquired
Nov. 21, 2002 CACI CACI Common (Restricted Stock Unit) CACI Common (75) $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)→ Common Stock, par value $.0001 per share (25,000) 25,000 Direct