The lost chance to use resources in another way due to the decision to allocate them in another way. So the opportunity cost of choosing to hold onto a stock position in which you have a loss would be the cost of forgoing another investment.

http://curiouscat.com/invest/opportunitycost.cfm

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An Insider Scoop on Insider Buying - by Hilary Kramer, AOL Financial Editor

"You might argue that sometimes insiders buy company stock to give the impression of confidence in their company and thereby drive up the price. No question, this does happen and it is easy to be tricked. Usually in that scenario, the officers and directors collectively snap up smaller amounts of shares. But if you see insiders that are willing to put hundreds of thousands and even millions of additional dollars on the line (after all, most of them already receive stock as part of their compensation), then you can safely see insider buying as a green flag of opportunity [...] 95% of the time, significant insider buying is an indication that the stock is trading at a discount."

http://money.aol.com/investing/hilaryonstocks/canvas/_a/an-insider-scoop-on-insider-buying/20060712162209990001

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Journey Enters Into Letter of Intent With Grenville Gold to Acquire Interest and Form Joint Venture on Silveria Project - 12/13/2007

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Insider transaction detail - View details for issuer
Transactions sorted by : Insider
Issuer name : grenville ( Starts with )
Transaction date range : December 13, 2007 - February 11, 2008

Transaction ID Date of transaction
YYYY-MM-DD Date of filing
YYYY-MM-DD Ownership type (and registered holder, if applicable) Nature of transaction Number or value acquired or disposed of Unit price or exercise price Closing balance Insider's calculated balance Conversion
or exercise
price Date of expiry or maturity
YYYY-MM-DD Underlying security designation Equivalent number or value of underlying securities acquired or disposed of Closing balance of equivalent number or value of underlying securities

Insider name: De Melt, Len
Insider's Relationship to Issuer: 4 - Director of Issuer
Security designation: Common Shares
1127598 2008-01-18 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +9,000 0.2500 3,979,613

1127600 2008-01-21 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +16,000 0.2500 3,995,613

1127603 2008-01-21 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +8,000 0.2300 4,003,613

1127606 2008-01-21 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +12,000 0.2400 4,015,613

1127609 2008-01-22 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +20,000 0.2400 4,035,613

1127612 2008-01-23 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +18,000 0.2400 4,053,613

Security designation: Options 2006 Stock Option Plan (Common Shares)
1127594 2008-01-15 2008-01-24 Direct Ownership :
50 - Grant of options +100,000 0.3000 350,000 2013-01-14 Common Shares +100,000 350,000

Insider name: Gill, Amrit Paul Singh
Insider's Relationship to Issuer: 4 - Director of Issuer
Security designation: Common Shares
1126992 2008-01-16 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market -3,500 0.2700 1,677,000

1126993 2008-01-16 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market -3,500 0.2600 1,673,500

1126994 2008-01-21 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +12,000 0.2600 1,685,500

1126995 2008-01-21 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +12,500 0.2600 1,698,000

1126996 2008-01-21 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +3,500 0.2400 1,701,500

1126997 2008-01-21 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +4,500 0.2400 1,706,000

1126998 2008-01-21 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +15,000 0.2700 1,721,000

1126999 2008-01-23 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +16,000 0.2450 1,737,000

1127000 2008-01-23 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +9,000 0.2450 1,746,000

1127001 2008-01-23 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +25,000 0.2450 1,771,000

1127002 2008-01-23 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +3,000 0.2450 1,774,000

1127003 2008-01-23 2008-01-24 Direct Ownership :
10 - Acquisition or disposition in the public market +2,000 0.2450 1,776,000

1132266 2008-01-24 2008-02-03 Direct Ownership :
10 - Acquisition or disposition in the public market +3,500 0.2400 1,779,500

1132262 2008-01-25 2008-02-03 Direct Ownership :
10 - Acquisition or disposition in the public market +25,000 0.2450 1,804,500

1132265 2008-01-25 2008-02-03 Direct Ownership :
10 - Acquisition or disposition in the public market +15,000 0.2700 1,819,500

1132263 2008-01-28 2008-02-03 Direct Ownership :
10 - Acquisition or disposition in the public market +5,000 0.2450 1,824,500

1132264 2008-01-28 2008-02-03 Direct Ownership :
10 - Acquisition or disposition in the public market +25,000 0.2450 1,849,500

1132267 2008-01-30 2008-02-03 Direct Ownership :
16 - Acquisition or disposition under a prospectus exemption +1,000,000 0.3000 2,849,500

Security designation: Options 2006 Stock Option Plan (Common Shares)
1126991 2008-01-14 2008-01-24 Direct Ownership :
50 - Grant of options +450,000 0.3000 575,000 2013-01-13 Common Shares +450,000 575,000

Insider name: Rokosh, Melvin
Insider's Relationship to Issuer: 4 - Director of Issuer
Security designation: Common Shares
1135302 2008-02-04 2008-02-06 Direct Ownership :
16 - Acquisition or disposition under a prospectus exemption +50,000 0.3000 100,000

1135318 2008-02-04 2008-02-06 Direct Ownership :
53 - Grant of warrants +50,000 0.4500 150,000

Security designation: Options 2006 Stock Option Plan (Common Shares)
1127703 2008-01-15 2008-01-24 Direct Ownership :
50 - Grant of options +180,000 0.3000 235,000 2013-01-14 Common Shares

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Grenville Gold's Management are very large shareholders of the company, currently:

- Chairman Len de Melt owns 3,970,613 shares, 538,887 options and 240,000 warrants ($1,538,301.49 spent on common shares at an average cost of $0.387/share).

- President and CEO Paul Gill owns 1,680,500 shares and 375,000 options ($906,485 spent on common shares at an average cost of $0.539/share).

Combined they spent $2,444,786.40 for 5,651,113 shares (at an average cost of $0.433/share)!

On a fully diluted basis Paul Gill and Len de Melt own 6,805,000 shares or 17.4% of the company (39,176,642 shares).

$2 Billion Potential Target for Silveria - I_luv_GVG - 12/15/2007 17:00
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Grenville Gold's Management are very large shareholders of the company and they continue to BUY, currently:

- Chairman Len de Melt owns 4,053,613 shares, 638,887 options and 240,000 warrants
($1,558,391.49 spent on common shares at an average cost of $0.384/share).

- President and CEO Paul Gill now owns 2,849,500 shares and 825,000 options and 1,000,000 warrants
($1,248,810 spent on common shares at an average cost of $0.438/share).

Combined they spent $2,807,201.40 for 6,903,113 shares (at an average cost of $0.407/share)!

On a fully diluted basis Paul Gill and Len de Melt own 9,607,000 shares or 23.6% of the company (40,676,142 shares - as of January 18, 2008).

Gill BUYS $18,365 of stock-fil.02-03 (non PP) - I_luv_GVG - 2/4/2008 19:51

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Net: Transaction date range : December 13, 2007 - February 11, 2008

De Melt: 83,000 shares, 100,000 options ($20,090 spent on common shares)

Gill: 1,169,000 shares, 450,000 options, 1,000,000 warrants ($342,325 spent on common shares)

+

Rokosh (CFO): 50,000 shares, 50,000 warrants ($18,365 spent on common shares)

If 1,050,000 warrants are exercised (Gill and Rokosh) = $472,500

Thus, Management spent $380,780 on common shares + $472,500 if warrants are exercised = $853,280

Management are there first and foremost to make money: They can spend there money on a great wealth of different investment securities, yet they buy much Grenville Gold stock. Management usually have greater transparency on Company projects than the common man. We can help diminish the grey area between Managements' Company knowledge base and our own, by gathering all pertinent publicly disseminated material and sharing it. In short, due diligence need be.

My own due diligence leads me to think that Silveria has a much better chance of being a World Class mineral deposit than most.

Disclaimer: I tabulated the data myself from sedi.ca

I_Luv_GVG