William W Canfield
CIK 1025182 · View on SEC EDGAR ↗
Insider
First SEC filing: April 8, 2008 · Latest: April 8, 2008
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 23 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
23 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 13, 2010 | EFX | S | 12,637 | $33.22 | $419,801 | 250,372 Indirect | -4.80% | Disposed | 485.9% (price as of 2026-08-21) |
| Nov. 23, 2009 | EFX | S | 4,603 | $29.40 | $135,328 | 311,813 Indirect | -1.45% | Disposed | 562.0% (price as of 2026-08-21) |
| Nov. 23, 2009 | EFX | S | 4,603 | $29.40 | $135,328 | 315,409 Indirect | -1.44% | Disposed | 562.0% (price as of 2026-08-21) |
| Nov. 16, 2009 | EFX | S | 5,397 | $29.40 | $158,672 | 320,012 Indirect | -1.66% | Disposed | 562.0% (price as of 2026-08-21) |
| Nov. 10, 2009 | EFX | S | 10,000 | $29.20 | $292,000 | 325,409 Indirect | -2.98% | Disposed | 566.5% (price as of 2026-08-21) |
| Nov. 9, 2009 | EFX | S | 10,000 | $28.59 | $285,900 | 335,409 Indirect | -2.90% | Disposed | 580.7% (price as of 2026-08-21) |
| Nov. 9, 2009 | EFX | S | 10,000 | $28.79 | $287,900 | 345,409 Indirect | -2.81% | Disposed | 576.0% (price as of 2026-08-21) |
| Nov. 9, 2009 | EFX | S | 10,000 | $28.99 | $289,900 | 355,409 Indirect | -2.74% | Disposed | 571.4% (price as of 2026-08-21) |
| Nov. 5, 2009 | EFX | S | 10,000 | $28.39 | $283,900 | 375,409 Indirect | -2.59% | Disposed | 585.5% (price as of 2026-08-21) |
| Nov. 5, 2009 | EFX | S | 10,000 | $28.19 | $281,900 | 365,409 Indirect | -2.66% | Disposed | 590.4% (price as of 2026-08-21) |
| Nov. 4, 2009 | EFX | S | 5,000 | $27.99 | $139,950 | 385,409 Indirect | -1.28% | Disposed | 595.3% (price as of 2026-08-21) |
| Oct. 30, 2009 | EFX | S | 5,000 | $27.79 | $138,950 | 390,409 Indirect | -1.26% | Disposed | 600.3% (price as of 2026-08-21) |
| May 20, 2009 | EFX | S | 10,000 | $29.00 | $290,000 | 445,409 Indirect | -2.20% | Disposed | 571.1% (price as of 2026-08-21) |
| Aug. 15, 2008 | EFX | S | 21,723 | $36.88 | $801,144 | 451,946 Indirect | -4.59% | Disposed | 427.7% (price as of 2026-08-21) |
| Feb. 28, 2008 | EFX | S | 14,209 | $35.75 | $507,972 | 482,776 Indirect | -2.86% | Disposed | 444.4% (price as of 2026-08-21) |
| Feb. 26, 2008 | EFX | S | 25,000 | $36.30 | $907,500 | 496,985 Indirect | -4.79% | Disposed | 436.2% (price as of 2026-08-21) |
| Feb. 26, 2008 | EFX | S | 25,000 | $36.10 | $902,500 | 521,985 Indirect | -4.57% | Disposed | 439.1% (price as of 2026-08-21) |
| Feb. 26, 2008 | EFX | S | 25,000 | $35.90 | $897,500 | 546,985 Indirect | -4.37% | Disposed | 442.1% (price as of 2026-08-21) |
| Feb. 25, 2008 | EFX | S | 29,006 | $35.69 | $1,035,224 | 571,985 Indirect | -4.83% | Disposed | 445.3% (price as of 2026-08-21) |
| Feb. 25, 2008 | EFX | S | 11,700 | $35.70 | $417,690 | 600,991 Indirect | -1.91% | Disposed | 445.2% (price as of 2026-08-21) |
| Feb. 25, 2008 | EFX | S | 13,300 | $35.73 | $475,209 | 612,691 Indirect | -2.12% | Disposed | 444.7% (price as of 2026-08-21) |
| Feb. 25, 2008 | EFX | S | 28,506 | $35.51 | $1,012,248 | 0 Indirect | -100.00% | Disposed | 448.1% (price as of 2026-08-21) |
| Feb. 25, 2008 | EFX | S | 1,105 | $35.67 | $39,415 | 0 Indirect | -100.00% | Disposed | 445.6% (price as of 2026-08-21) |
| Feb. 25, 2008 | EFX | S | 8,501 | $35.50 | $301,786 | 1,105 Indirect | -88.50% | Disposed | 448.2% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 500 | $38.15 | $19,075 | 410,434 Indirect | -0.12% | Disposed | 410.2% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 300 | $38.11 | $11,433 | 410,934 Indirect | -0.07% | Disposed | 410.7% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 800 | $38.08 | $30,464 | 411,234 Indirect | -0.19% | Disposed | 411.1% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 200 | $38.07 | $7,614 | 412,034 Indirect | -0.05% | Disposed | 411.2% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 200 | $38.06 | $7,612 | 412,234 Indirect | -0.05% | Disposed | 411.4% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 100 | $38.02 | $3,802 | 412,434 Indirect | -0.02% | Disposed | 411.9% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 1,000 | $38.01 | $38,010 | 412,534 Indirect | -0.24% | Disposed | 412.0% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 2,500 | $38.00 | $95,000 | 413,534 Indirect | -0.60% | Disposed | 412.2% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 3,700 | $37.99 | $140,563 | 416,034 Indirect | -0.88% | Disposed | 412.3% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 2,000 | $37.98 | $75,960 | 419,734 Indirect | -0.47% | Disposed | 412.4% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 900 | $37.97 | $34,173 | 421,734 Indirect | -0.21% | Disposed | 412.6% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 900 | $37.96 | $34,164 | 422,634 Indirect | -0.21% | Disposed | 412.7% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 300 | $37.95 | $11,385 | 423,534 Indirect | -0.07% | Disposed | 412.8% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 300 | $37.93 | $11,379 | 423,834 Indirect | -0.07% | Disposed | 413.1% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 400 | $37.92 | $15,168 | 424,134 Indirect | -0.09% | Disposed | 413.3% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 1,100 | $37.91 | $41,701 | 424,534 Indirect | -0.26% | Disposed | 413.4% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 600 | $37.90 | $22,740 | 425,634 Indirect | -0.14% | Disposed | 413.5% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 100 | $37.87 | $3,787 | 426,234 Indirect | -0.02% | Disposed | 413.9% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 3,000 | $37.86 | $113,580 | 426,334 Indirect | -0.70% | Disposed | 414.1% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 500 | $37.85 | $18,925 | 429,334 Indirect | -0.12% | Disposed | 414.2% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 200 | $37.82 | $7,564 | 429,834 Indirect | -0.05% | Disposed | 414.6% (price as of 2026-08-21) |
| Dec. 10, 2007 | EFX | S 10b5-1 | 400 | $37.81 | $15,124 | 430,034 Indirect | -0.09% | Disposed | 414.7% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 500 | $38.30 | $19,150 | 434,934 Indirect | -0.11% | Disposed | 408.2% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 500 | $38.16 | $19,080 | 435,434 Indirect | -0.11% | Disposed | 410.0% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 100 | $38.12 | $3,812 | 435,934 Indirect | -0.02% | Disposed | 410.6% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 500 | $38.09 | $19,045 | 436,034 Indirect | -0.11% | Disposed | 411.0% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 500 | $38.08 | $19,040 | 436,534 Indirect | -0.11% | Disposed | 411.1% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 500 | $38.00 | $19,000 | 437,034 Indirect | -0.11% | Disposed | 412.2% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 700 | $38.27 | $26,789 | 437,534 Indirect | -0.16% | Disposed | 408.6% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 700 | $38.25 | $26,775 | 438,234 Indirect | -0.16% | Disposed | 408.8% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 3,900 | $38.23 | $149,097 | 438,934 Indirect | -0.88% | Disposed | 409.1% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 3,300 | $38.22 | $126,126 | 442,834 Indirect | -0.74% | Disposed | 409.2% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 200 | $38.21 | $7,642 | 446,134 Indirect | -0.04% | Disposed | 409.4% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 3,800 | $38.20 | $145,160 | 446,334 Indirect | -0.84% | Disposed | 409.5% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 100 | $38.14 | $3,814 | 450,134 Indirect | -0.02% | Disposed | 410.3% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 200 | $38.12 | $7,624 | 450,234 Indirect | -0.04% | Disposed | 410.6% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 200 | $38.11 | $7,622 | 450,434 Indirect | -0.04% | Disposed | 410.7% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 1,200 | $38.10 | $45,720 | 450,634 Indirect | -0.27% | Disposed | 410.8% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 100 | $38.08 | $3,808 | 451,834 Indirect | -0.02% | Disposed | 411.1% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 300 | $38.07 | $11,421 | 451,934 Indirect | -0.07% | Disposed | 411.2% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 1,900 | $38.06 | $72,314 | 452,234 Indirect | -0.42% | Disposed | 411.4% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 200 | $38.05 | $7,610 | 454,134 Indirect | -0.04% | Disposed | 411.5% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 3,000 | $37.98 | $113,940 | 454,334 Indirect | -0.66% | Disposed | 412.4% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 500 | $37.97 | $18,985 | 457,334 Indirect | -0.11% | Disposed | 412.6% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 900 | $37.96 | $34,164 | 457,834 Indirect | -0.20% | Disposed | 412.7% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 1,700 | $37.94 | $64,498 | 458,734 Indirect | -0.37% | Disposed | 413.0% (price as of 2026-08-21) |
| Dec. 7, 2007 | EFX | S 10b5-1 | 4,500 | $37.95 | $170,775 | 124,636 Indirect | -3.48% | Disposed | 412.8% (price as of 2026-08-21) |
| Dec. 6, 2007 | EFX | S 10b5-1 | 600 | $37.06 | $22,236 | 475,234 Indirect | -0.13% | Disposed | 425.2% (price as of 2026-08-21) |
| Dec. 6, 2007 | EFX | S 10b5-1 | 100 | $37.07 | $3,707 | 475,134 Indirect | -0.02% | Disposed | 425.0% (price as of 2026-08-21) |
| Dec. 6, 2007 | EFX | S 10b5-1 | 100 | $37.08 | $3,708 | 475,034 Indirect | -0.02% | Disposed | 424.9% (price as of 2026-08-21) |
| Dec. 6, 2007 | EFX | S 10b5-1 | 500 | $37.18 | $18,590 | 474,534 Indirect | -0.11% | Disposed | 423.5% (price as of 2026-08-21) |
| Dec. 6, 2007 | EFX | S 10b5-1 | 100 | $37.19 | $3,719 | 474,434 Indirect | -0.02% | Disposed | 423.3% (price as of 2026-08-21) |
| Dec. 6, 2007 | EFX | S 10b5-1 | 300 | $37.21 | $11,163 | 474,134 Indirect | -0.06% | Disposed | 423.0% (price as of 2026-08-21) |
Showing latest 100 of 490 transactions
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 30, 2010 | EFX | Stock Option/Right to Buy | Common Stock (25,000) | $33.60 | April 30, 2020 | 25,000 | Acquired |
| April 24, 2009 | EFX | Stock Option/Right to Buy | Common Stock (30,000) | $28.81 | April 24, 2014 | 30,000 | Acquired |
| April 4, 2008 | EFX | Stock Option/Right to Buy | Common Stock (10,689) | $9.35 | May 22, 2012 | 10,689 | Disposed |
| April 4, 2008 | EFX | Stock Option/Right to Buy | Common Stock (10,981) | $13.01 | May 1, 2011 | 10,981 | Disposed |
| April 4, 2008 | EFX | Stock Option/Right to Buy | Common Stock (28,128) | $4.65 | May 10, 2010 | 28,128 | Disposed |
| Feb. 8, 2008 | EFX | Stock Option/Right to Buy | Common Stock (25,000) | $33.88 | Feb. 8, 2018 | 25,000 | Acquired |
| Feb. 8, 2008 | EFX | Stock Option/Right to Buy | Common Stock (25,000) | $33.88 | Feb. 8, 2018 | 25,000 | Acquired |
| June 20, 2007 | EFX | Stock Option/Right to Buy | Common Stock (28,142) | $9.93 | Feb. 26, 2014 | 28,142 | Disposed |
| June 20, 2007 | EFX | Stock Option/Right to Buy | Common Stock (84,735) | $9.35 | May 22, 2012 | 84,735 | Disposed |
| June 13, 2007 | EFX | Stock Option/Right to Buy | Common Stock (202,117) | $13.01 | May 1, 2011 | 202,117 | Disposed |
| June 6, 2007 | EFX | Stock Option/Right to Buy | Common Stock (42,193) | $4.65 | May 10, 2010 | 42,193 | Disposed |
| June 6, 2007 | EFX | Stock Option/Right to Buy | Common Stock (70,322) | $2.42 | May 14, 2009 | 70,322 | Disposed |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (28,142) | $9.93 | Feb. 26, 2014 | 28,142 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (20,288) | $9.93 | Feb. 26, 2014 | 20,288 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (86,172) | $9.35 | May 22, 2012 | 86,172 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (10,689) | $9.35 | May 22, 2012 | 10,689 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (202,117) | $13.01 | May 1, 2011 | 202,117 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (10,981) | $13.01 | May 1, 2011 | 10,981 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (42,193) | $4.65 | May 10, 2010 | 42,193 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (28,129) | $4.65 | May 10, 2010 | 28,129 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (70,322) | $2.42 | May 14, 2009 | 70,322 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (28,142) | $9.93 | Feb. 26, 2014 | 28,142 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (20,288) | $9.93 | Feb. 26, 2014 | 20,288 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (86,172) | $9.35 | May 22, 2012 | 86,172 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (10,689) | $9.35 | May 22, 2012 | 10,689 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (202,117) | $13.01 | May 1, 2011 | 202,117 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (10,981) | $13.01 | May 1, 2011 | 10,981 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (42,193) | $4.65 | May 10, 2010 | 42,193 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (28,129) | $4.65 | May 10, 2010 | 28,129 | Acquired |
| May 15, 2007 | EFX | Stock Option/Right to Buy | Common Stock (70,322) | $2.42 | May 14, 2009 | 70,322 | 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 |
|---|---|---|---|---|
| May 17, 2007 | EFX | Common Stock | 0 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2010 | $598,601 | $0 | — | — | $540,803 | $0 | $154,390 | $1,910,596 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.