Michael S Shannon
CIK 1363871 · View on SEC EDGAR ↗
Insider
First SEC filing: Feb. 29, 2008 · Latest: Feb. 29, 2008
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 22 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
22 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Nov. 5, 2009 | EFX | S | 2,655 | $28.17 | $74,791 | 37,042 Direct | -6.69% | Disposed | 590.9% (price as of 2026-08-21) |
| Nov. 5, 2009 | EFX | S | 2,200 | $28.16 | $61,952 | 39,697 Direct | -5.25% | Disposed | 591.1% (price as of 2026-08-21) |
| Nov. 5, 2009 | EFX | S | 1,000 | $28.18 | $28,180 | 41,897 Direct | -2.33% | Disposed | 590.6% (price as of 2026-08-21) |
| Nov. 5, 2009 | EFX | S | 700 | $28.16 | $19,712 | 42,897 Direct | -1.61% | Disposed | 591.1% (price as of 2026-08-21) |
| Nov. 5, 2009 | EFX | S | 200 | $28.17 | $5,634 | 43,597 Direct | -0.46% | Disposed | 590.9% (price as of 2026-08-21) |
| April 24, 2009 | EFX | S | 4,938 | $28.75 | $141,968 | 36,797 Direct | -11.83% | Disposed | 577.0% (price as of 2026-08-21) |
| April 24, 2009 | EFX | S | 600 | $28.76 | $17,256 | 41,735 Direct | -1.42% | Disposed | 576.7% (price as of 2026-08-21) |
| April 24, 2009 | EFX | S | 500 | $28.74 | $14,370 | 42,335 Direct | -1.17% | Disposed | 577.2% (price as of 2026-08-21) |
| April 24, 2009 | EFX | S | 500 | $28.77 | $14,385 | 42,835 Direct | -1.15% | Disposed | 576.5% (price as of 2026-08-21) |
| Aug. 15, 2008 | EFX | S | 6,265 | $36.70 | $229,926 | 36,445 Direct | -14.67% | Disposed | 430.3% (price as of 2026-08-21) |
| Aug. 15, 2008 | EFX | S | 200 | $36.72 | $7,344 | 42,710 Direct | -0.47% | Disposed | 430.0% (price as of 2026-08-21) |
| May 6, 2008 | EFX | S | 3,500 | $39.00 | $136,500 | 42,910 Direct | -7.54% | Disposed | 399.0% (price as of 2026-08-21) |
| Feb. 27, 2008 | EFX | S | 1,764 | $36.02 | $63,539 | 41,580 Direct | -4.07% | Disposed | 440.3% (price as of 2026-08-21) |
| Feb. 19, 2008 | EFX | S | 900 | $35.05 | $31,545 | 43,634 Direct | -2.02% | Disposed | 455.3% (price as of 2026-08-21) |
| Feb. 19, 2008 | EFX | S | 300 | $35.04 | $10,512 | 44,534 Direct | -0.67% | Disposed | 455.4% (price as of 2026-08-21) |
| Feb. 19, 2008 | EFX | S | 100 | $35.03 | $3,503 | 44,834 Direct | -0.22% | Disposed | 455.6% (price as of 2026-08-21) |
| Feb. 19, 2008 | EFX | S | 400 | $35.02 | $14,008 | 44,934 Direct | -0.88% | Disposed | 455.8% (price as of 2026-08-21) |
| Feb. 19, 2008 | EFX | S | 600 | $35.01 | $21,006 | 45,334 Direct | -1.31% | Disposed | 455.9% (price as of 2026-08-21) |
| Feb. 19, 2008 | EFX | S | 6,262 | $35.00 | $219,170 | 45,934 Direct | -12.00% | Disposed | 456.1% (price as of 2026-08-21) |
| May 3, 2007 | EFX | S | 200 | $40.59 | $8,118 | 41,079 Direct | -0.48% | Disposed | 379.5% (price as of 2026-08-21) |
| May 3, 2007 | EFX | S | 1,500 | $40.60 | $60,900 | 41,279 Direct | -3.51% | Disposed | 379.4% (price as of 2026-08-21) |
| May 3, 2007 | EFX | S | 1,300 | $40.61 | $52,793 | 42,779 Direct | -2.95% | Disposed | 379.3% (price as of 2026-08-21) |
| May 3, 2007 | EFX | S | 682 | $40.63 | $27,710 | 44,079 Direct | -1.52% | Disposed | 379.0% (price as of 2026-08-21) |
| Nov. 13, 2006 | EFX | S | 316 | $38.10 | $12,040 | 41,000 Direct | -0.76% | Disposed | 410.8% (price as of 2026-08-21) |
| Nov. 13, 2006 | EFX | S | 1,404 | $38.11 | $53,506 | 41,316 Direct | -3.29% | Disposed | 410.7% (price as of 2026-08-21) |
| Nov. 13, 2006 | EFX | S | 500 | $38.12 | $19,060 | 42,720 Direct | -1.16% | Disposed | 410.6% (price as of 2026-08-21) |
| Oct. 20, 2006 | EFX | S | 420 | $36.64 | $15,389 | 43,220 Direct | -0.96% | Disposed | 431.2% (price as of 2026-08-21) |
| Oct. 20, 2006 | EFX | S | 1,500 | $36.57 | $54,855 | 43,640 Direct | -3.32% | Disposed | 432.2% (price as of 2026-08-21) |
| Oct. 20, 2006 | EFX | S | 100 | $36.62 | $3,662 | 45,140 Direct | -0.22% | Disposed | 431.5% (price as of 2026-08-21) |
| Oct. 20, 2006 | EFX | S | 427 | $36.63 | $15,641 | 45,240 Direct | -0.94% | Disposed | 431.3% (price as of 2026-08-21) |
| Oct. 20, 2006 | EFX | S | 100 | $36.62 | $3,662 | 42,140 Direct | -0.24% | Disposed | 431.5% (price as of 2026-08-21) |
| Oct. 20, 2006 | EFX | S | 427 | $36.63 | $15,641 | 42,240 Direct | -1.00% | Disposed | 431.3% (price as of 2026-08-21) |
| Oct. 20, 2006 | EFX | S | 420 | $36.64 | $15,389 | 40,220 Direct | -1.03% | Disposed | 431.2% (price as of 2026-08-21) |
| Oct. 20, 2006 | EFX | S | 1,500 | $36.57 | $54,855 | 40,640 Direct | -3.56% | Disposed | 432.2% (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 |
|---|---|---|---|---|---|---|---|
| April 24, 2009 | EFX | Stock Option/Right to Buy | Common Stock (17,000) | $28.81 | April 24, 2019 | 17,000 | Acquired |
| April 24, 2009 | EFX | Stock Option/Right to Buy | Common Stock (10,135) | $13.62 | Dec. 10, 2009 | 10,135 | Disposed |
| Feb. 27, 2008 | EFX | Stock Option/Right to Buy | Common Stock (4,830) | $21.83 | Jan. 27, 2009 | 4,830 | Disposed |
| Feb. 19, 2008 | EFX | Stock Option/Right to Buy | Common Stock (8,562) | $21.83 | Jan. 27, 2009 | 8,562 | Disposed |
| Feb. 8, 2008 | EFX | Stock Option/Right to Buy | Common Stock (16,000) | $33.88 | Feb. 8, 2018 | 16,000 | Acquired |
| May 3, 2007 | EFX | Stock Option/Right to Buy | Common Stock (3,500) | $21.83 | Jan. 27, 2009 | 3,500 | Disposed |
| May 3, 2007 | EFX | Stock Option/Right to Buy | Common Stock (682) | $19.35 | Jan. 28, 2008 | 682 | Disposed |
| Feb. 26, 2007 | EFX | Stock Option/Right to Buy | Common Stock (1,764) | $19.35 | Jan. 28, 2008 | 1,764 | Disposed |
| Feb. 7, 2007 | EFX | Stock Option/Right to Buy | Common Stock (15,000) | $41.22 | Feb. 7, 2017 | 15,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 74 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Jan. 31, 2007 | EFX | Common Stock | 43,640 | Direct |
| Jan. 31, 2007 | EFX | Common Stock | 602 | Indirect |
| Jan. 31, 2007 | EFX | Common Stock | 73 | Indirect |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (682) | 682 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (1,764) | 1,764 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (8,330) | 8,330 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (8,562) | 8,562 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (10,135) | 10,135 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (2,988) | 2,988 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (7,147) | 7,147 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy [F7]→ Common Stock (0) | 0 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (5,214) | 5,214 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (6,786) | 6,786 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (4,863) | 4,863 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (10,137) | 10,137 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (4,311) | 4,311 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (9,689) | 9,689 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (18,000) | 18,000 | Direct |
| Jan. 31, 2007 | EFX | Stock Option/Right to Buy→ Common Stock (15,000) | 15,000 | Direct |
| Oct. 26, 2006 | EFX | Common Stock | 45,667 | Direct |
| Oct. 26, 2006 | EFX | Common Stock | 602 | Indirect |
| Oct. 26, 2006 | EFX | Common Stock | 73 | Indirect |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (682) | 682 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (1,764) | 1,764 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (8,330) | 8,330 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (8,562) | 8,562 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (10,135) | 10,135 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (2,988) | 2,988 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (7,147) | 7,147 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy [F7]→ Common Stock (0) | 0 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (5,214) | 5,214 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (6,786) | 6,786 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (4,863) | 4,863 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (10,137) | 10,137 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (4,311) | 4,311 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (9,689) | 9,689 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (18,000) | 18,000 | Direct |
| Oct. 26, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (15,000) | 15,000 | Direct |
| May 25, 2006 | EFX | Common Stock | 43,640 | Direct |
| May 25, 2006 | EFX | Common Stock | 602 | Indirect |
| May 25, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (682) | 682 | Direct |
| May 25, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (1,764) | 1,764 | Direct |
| May 25, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (8,330) | 8,330 | Direct |
| May 25, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (8,562) | 8,562 | Direct |
| May 25, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (10,135) | 10,135 | Direct |
| May 25, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (2,988) | 2,988 | Direct |
| May 25, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (7,147) | 7,147 | Direct |
| May 25, 2006 | EFX | Stock Option/Right to Buy [F6]→ Common Stock (0) | 0 | Direct |
| May 25, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (5,214) | 5,214 | Direct |
| May 25, 2006 | EFX | Stock Option/Right to Buy→ Common Stock (6,786) | 6,786 | Direct |