Welcome to edition 281 of Insider Weekends. Insider buying dropped significantly last week with insiders buying $39.44 million of stock compared to $122.24 million in the week prior. Selling remained unchanged with insiders selling $1.36 billion of stock last week.

Sell/Buy Ratio: The insider Sell/Buy ratio is calculated by dividing the total insider sales in a given week by total insider purchases that week. The adjusted ratio for last week went up to 34.56. In other words, insiders sold almost 35 times as much stock as they purchased. The Sell/Buy ratio this week compares unfavorably with the prior week, when the ratio stood at 11.14. We are calculating an adjusted ratio by removing transactions by funds and companies and trying as best as possible only to retain information about insiders and 10% owners who are not funds or companies.

Note: As mentioned in the first post in this series, certain industries have their preferred metrics such as same store sales for retailers, funds from operations (FFO) for REITs and revenue per available room (RevPAR) for hotels that provide a better basis for comparison than simple valuation metrics. However metrics like Price/Earnings, Price/Sales and Enterprise Value/EBITDA included below should provide a good starting point for analyzing the majority of stocks.

Notable Insider Buys:

1. Healthways Inc. (HWAY): $12.38

Shares of this personalized health services provider were acquired by 5 insiders:

• Director Conan Laughlin acquired 350,000 shares, paying $11.51 per share for a total amount of $4.03 million. These shares were purchased indirectly through a fund.
• Director Robert J. Greczyn Jr. acquired 11,000 shares, paying $11.40 per share for a total amount of $125,380. Mr. Greczyn increased his stake by 177.33% to 17,203 shares with this purchase.
• President and CEO Donato Tramuto acquired 8,740 shares, paying $11.47 per share for a total amount of $100,248. Mr. Tramuto increased his stake by 2.96% to 304,186 shares with this purchase.
• Director Mary Jane England acquired 4,401 shares, paying $11.38 per share for a total amount of $50,083. Ms. England increased her stake by 14.62% to 34,509 shares with this purchase.
• Director Lee Shapiro acquired 4,359 shares, paying $11.42 per share for a total amount of $49,780. Mr. Shapiro increased his stake by 70.27% to 10,562 shares with this purchase.

You can view the list of recent insider transactions for Healthways Inc. here.

2. Olin Corp. (OLN): $20.36

Shares of this specialty chemicals company were acquired by 9 insiders:

• Director Richard M. Rompala acquired 50,000 shares, paying $19.51 per share for a total amount of $975,305. Mr. Rompala increased his stake by 10000.00% to 50,500 shares with this purchase.
• Director Donald W. Bogus acquired 50,000 shares, paying $19.92 per share for a total amount of $995,820. Mr. Bogus increased his stake by 163.30% to 80,618 shares with this purchase.
• Director Randall W. Larrimore acquired 37,500 shares, paying $19.91 per share for a total amount of $746,644. These shares were purchased indirectly through a trust.
• SVP, Gen. Counsel & Secretary George H. Pain acquired 25,000 shares, paying $19.99 per share for a total amount of $499,805. Mr. Pain increased his stake by 26.92% to 117,866 shares with this purchase.
• Director Philip J. Schulz acquired 21,100 shares, paying $20.08 per share for a total amount of $423,724. Mr. Schulz increased his stake by 97.23% to 42,801 shares with this purchase.
• President, CAV & Services James A. Varilek acquired 15,000 shares, paying $19.27 per share for a total amount of $289,110. These shares were purchased indirectly through a trust.
• Director Vince J. Smith acquired 10,000 shares, paying $19.90 per share for a total amount of $199,000. Mr. Smith increased his stake by 63.94% to 25,639 shares with this purchase.
• VP – M&E, CAV/EPOXY/GCO John Maurice Sampson acquired 5,000 shares, paying $19.20 per share for a total amount of $95,998. Mr. Sampson increased his stake by 258.93% to 6,931 shares with this purchase.
• President & COO John E. Fischer acquired 5,000 shares, paying $19.60 per share for a total amount of $98,005. Mr. Fischer increased his stake by 3.73% to 139,111 shares with this purchase.

You can view the list of recent insider transactions for Olin Corp. here.

3. Kinder Morgan, Inc. (KMI): $26.06

Shares of this oil & gas pipelines company were acquired by 5 insiders:

• President and CEO Steven J. Kean acquired 18,150 shares, paying $27.43 per share for a total amount of $497,818. Mr. Kean increased his stake by 0.25% to 7,314,774 shares with this purchase.
• V.P. & General Counsel David R. Deveau acquired 11,000 shares, paying $27.40 per share for a total amount of $301,393. Mr. Deveau increased his stake by 3.21% to 354,132 shares with this purchase.
• V.P.(Pres. Nat. Gas Pipelines) Thomas A. Martin acquired 10,000 shares, paying $27.24 per share for a total amount of $272,414. Mr. Martin increased his stake by 1.03% to 985,069 shares with this purchase.
• VP & Chief Financial Officer Kimberly A. Dang acquired 2,000 shares, paying $26.50 per share for a total amount of $53,000. Ms. Dang increased her stake by 0.64% to 314,937 shares with this purchase.
• V.P. Corporate Development Dax Sanders acquired 1,000 shares, paying $27.40 per share for a total amount of $27,400. Mr. Sanders increased his stake by 0.37% to 269,927 shares with this purchase.

You can view the list of recent insider transactions for Kinder Morgan, Inc. here.

4. Accelerate Diagnostics, Inc. (AXDX): $18.18

Director Jack W. Schuler acquired 64,736 shares of this medical instrumentation and diagnostics company, paying $16.81 per share for a total amount of $1.09 million. These shares were purchased indirectly through a trust.

You can view the list of recent insider transactions for Accelerate Diagnostics, Inc. here.

5. Nielsen Holdings plc (NLSN): $48.05

Director James A. Attwood Jr. acquired 20,000 shares of this information and measurement company, paying $47.75 per share for a total amount of $955,000. Mr. Attwood increased his stake by 670.02% to 22,985 shares with this purchase.

Mr. Attwood is a Managing Director of private equity firm The Carlyle Group. Nielsen was acquired by Carlyle Group and five other private equity firms in 2006 and became public in January 2011.

You can view the list of recent insider transactions for Nielsen Holdings plc here.

You can view the full list of purchases from this Insider Buying page.

Notable Insider Sales:

1. Facebook, Inc. (FB): $107.095

Shares of Facebook were sold by 3 insiders:

• Director Marc L. Andreessen sold 620,314 shares for $103.03, generating $63.91 million from the sale. These shares were sold indirectly through a trust.
• Chief Product Officer Christopher K. Cox sold 15,500 shares for $102.53, generating $1.59 million from the sale.
• VP, Gen. Counsel & Secretary Colin Stretch sold 1,000 shares for $103.35, generating $103,350 from the sale.

You can view the list of recent insider transactions for Facebook, Inc. here.

2. Apple Inc. (AAPL): $121.06

Shares of Apple were sold by 3 insiders:

• Senior Vice President Eduardo H. Cue sold 200,000 shares for $120.11, generating $24.02 million from the sale. These shares were sold indirectly through a trust.
• Chief Executive Officer Timothy D. Cook sold 120,593 shares for $120.88, generating $14.58 million from the sale.
• Senior Vice President Daniel J. Riccio sold 13,588 shares for $120.81, generating $1.64 million from the sale.

You can view the list of recent insider transactions for Apple Inc. here.

3. ServiceNow, Inc. (NOW): $85.24

Shares of this software-as-a-service provider were sold by 2 insiders:

• Chief Product Officer Frederic B. Luddy sold 203,600 shares for $84.04, generating $17.11 million from the sale. These shares were sold indirectly through various trusts.
• President & CEO Frank Slootman sold 150,000 shares for $81.60, generating $12.24 million from the sale. These shares were sold as a result of exercising options immediately prior to the sale.

You can view the list of recent insider transactions for ServiceNow, Inc. here.

4. BlackRock, Inc. (BLK): $356.7

Chairman and CEO Laurence Fink sold 42,800 shares of this asset management company for $357.56, generating $15.3 million from the sale.

You can view the list of recent insider transactions for BlackRock, Inc. here.

5. China Biologic Products, Inc. (CBPO): $114.99

Chief Executive Officer David Gao sold 108,882 shares of this biotech company for $115.20, generating $12.54 million from the sale.

You can view the list of recent insider transactions for China Biologic Products, Inc. here.

You can view the full list of sales from this Insider Sales page.