Filed pursuant to Rule 424 (b) (3)

 

Registration No. 333-132262

5,750,000 Shares

of

Chesapeake Energy Corporation

5.00% Cumulative Convertible Preferred Stock (Series 2005B)

(Liquidation Preference $100 per share)

and

Common Stock

(Par Value $.01 per share)

 

PROSPECTUS SUPPLEMENT NO. 6

DATED September 21, 2007

TO PROSPECTUS DATED March 7, 2006

 

The selling securityholders table on pages 43 through 45 of the prospectus is amended by this supplement no. 6 to read as follows.

 

NAME

Number of Shares of Preferred Stock Beneficially Owned Prior to the Offering

Number of Shares of Preferred Stock Being Offered Hereby

Number of Shares of Preferred Stock to be Owned After Completion of the Offering

Number of Shares of Common Stock Beneficially Owned Prior to the Offering (1)

Number of Shares of Common Stock Being Offered Hereby (1)

Number of Shares of Common Stock to be Owned After Completion of the Offering (1)

 

 

 

 

 

 

 

Akanthos Arbitrage Master Fund, LP

500,000

500,000

0

2,110,450

1,279,750

830,700

Aloha Airlines Non-Pilots Pension Trust

100

100

0

256

256

0

Argent Classic Convertible Arbitrage Fund II, L.P.

6,700

6,700

0

17,149

17,149

0

Argent Classic Convertible Arbitrage Fund L.P.

15,270

15,270

0

39,084

39,084

0

Argent LowLev Convertible Arbitrage Fund II, LLC

3,200

3,200

0

8,190

8,190

0

Argent LowLev Convertible Arbitrage Fund LLC

21,370

21,370

0

54,697

54,697

0

Aristeia International Limited

75,250

75,250

0

192,602

192,602

0

Aristeia Partners LP

12,250

12,250

0

31,354

31,354

0

Arkansas PERS

9,575

9,575

0

24,507

24,507

0

AstraZeneca Holdings Pension

1,210

1,210

0

3,097

3,097

0

Bank of America Pension Plan

75,000

75,000

0

191,963

191,963

0

Boilermakers Blacksmith Pension Trust

3,525

3,525

0

9,022

9,022

0

BP Amoco PLC Master Trust

24,916

24,916

0

63,773

63,773

0

CALAMOS Market Neutral Income Fund
CALAMOS Investment Trust

29,000

29,000

0

74,226

74,226

0

Canyon Value Realization Fund, L.P.

39,375

39,375

0

246,802

100,780

146,022

Canyon Value Realization MAC 18, Ltd. (RMF)

5,250

5,250

0

33,812

13,437

20,375

 

 

Chrysler Corporation Master Retirement Trust

111,400

111,400

0

316,597

285,128

31,468

Class C Trading Company, Ltd.

31,553

31,553

0

80,760

80,760

0

D.E. Shaw Valence Portfolios, L.L.C.

155,000

155,000

0

396,723

396,723

0

DBAG London

131,703

131,703

0

589,365

337,094

252,272

DeepRock & Co.

30,000

30,000

0

76,785

76,785

0

Delaware PERS

5,570

5,570

0

14,256

14,256

0

Delaware Public Employees Retirement System

32,000

32,000

0

113,261

81,904

31,357

Delta Air Lines Master Trust – CV

21,600

21,600

0

65,246

55,285

9,961

Delta Airlines Master Trust

775

775

0

1,984

1,984

0

Delta Pilots Disability & Survivorship Trust - CV

11,800

11,800

0

35,862

30,202

5,660

Deutsche Bank Securities, Inc.

393,973

393,973

0

27,733,130

1,008,374

26,724,756

Equity Overlay Fund, LLC

17,500

17,500

0

44,791

44,791

0

F. M. Kirby Foundation, Inc.

17,900

17,900

0

51,475

45,815

5,660

Fidelity Financial Trust:
Fidelity Convertible Securities Fund

149,600

149,600

0

1,197,932

382,901

815,031

FIST Convertible Securities Fund

170,000

170,000

0

435,115

435,115

0

Forest Fulcrum Fund LP

8,090

8,090

0

20,706

20,706

0

Forest Global Convertible Fund, Ltd., Class A-5

10,431

10,431

0

26,698

26,698

0

Forest Multi-Strategy Master Fund SPC, on behalf of its Multi-Strategy Segregated Portfolio

10,682

10,682

0

27,341

27,341

0

FPL Group Employees Pension Plan

1,625

1,625

0

4,159

4,159

0

Franklin Income Fund

900,000

900,000

0

2,303,550

2,303,550

0

FTIF Franklin Income Fund

50,000

50,000

0

127,975

127,975

0

FTVIP Income Securities Fund

100,000

100,000

0

255,950

255,950

0

GLG Market Neutral Fund

150,000

150,000

0

383,925

383,925

0

Goldman, Sachs & Co.

50,175

50,175

0

2,139,631

128,423

2,011,209

Grace Convertible Arbitrage Fund, Ltd.

30,000

30,000

0

127,975

76,785

51,190

Hallmark Convertible Securities Fund

350

350

0

896

896

0

HFR CA Global Opportunity Master Trust

11,999

11,999

0

30,711

30,711

0

HFR RVA Select Performance Master Trust

3,660

3,660

0

9,368

9,368

0

Hotel Union & Hotel Industry of Hawaii
Pension Plan Master Trust

3,597

3,597

0

9,207

9,207

0

ICI American Holdings Trust

2,115

2,115

0

5,413

5,413

0

Inflective Convertible Opportunity Fund I, LP

21,000

21,000

0

53,750

53,750

0

Inflective Convertible Opportunity Fund Ltd.

65,000

65,000

0

166,368

166,368

0

Institutional Benchmarks Master Fund Ltd.

14,310

14,310

0

36,626

36,626

0

Institutional Benchmarks Series –

IVAN Segregated Acct

10,000

10,000

0

25,595

25,595

0

Institutional Benchmarks Series Limited
in Respect of Centaur Series

1,750

1,750

0

11,271

4,479

6,792

International Truck & Engine Corporation
Non-Contributory Retirement Plan Trust

9,300

9,300

0

28,331

23,803

4,528

International Truck & Engine Corporation
Retiree Health Benefit Trust

5,700

5,700

0

16,853

14,589

2,264

International Truck & Engine Corporation
Retirement Plan for Salaried Employees Trust

5,400

5,400

0

15,632

13,821

1,811

 

 

JMG Capital Partners, LP

200,000

200,000

0

1,062,195

511,900

550,295

John Deere Pension Trust

27,500

27,500

0

70,386

70,386

0

JP Morgan Securities Inc.

1,500

1,500

0

3,839

3,839

0

Lazard Capital Markets

5,200

5,200

0

22,524

13,309

9,214

Lehman Brothers Inc.

160,000

160,000

0

409,520

409,520

0

LDG Limited

1,840

1,840

0

4,709

4,709

0

LLT Limited

9,757

9,757

0

24,973

24,973

0

Lyxor l Forest Fund Limited

22,398

22,398

0

57,328

57,328

0

Lyxor/Inflective Convertible Opportunity Fund, Ltd.

20,000

20,000

0

51,190

51,190

0

McMahan Securities Co., L.P.

5,000

5,000

0

66,112

12,798

53,315

Microsoft Capital Group, L.P.

18,000

18,000

0

46,071

46,071

0

Morgan Stanley Capital Services, Inc.

60,000

60,000

0

5,503,041

153,570

5,349,471

Morgan Stanely Convertible Securities Trust

19,000

19,000

0

48,631

48,631

0

MSS Convertible Arbitrage I

1,310

1,310

0

4,863

3,353

1,510

Nuveen Preferred & Convertible Fund JQC

48,335

48,335

0

123,713

123,713

0

Nuveen Preferred & Convertible Income Fund JPC

35,460

35,460

0

90,760

90,760

0

OCLC Online Computer Library Center

200

200

0

512

512

0

OCM Convertible Trust

39,500

39,500

0

114,231

101,100

13,131

OCM Global Convertible Securities Fund

6,200

6,200

0

18,133

15,869

2,264

Partner Reinsurance Company of the U.S.

18,500

18,500

0

65,236

47,351

17,885

Partners Group Alternative Strategies PCC LTD

24,450

24,450

0

62,580

62,580

0

Peoples Benefit Life Insurance Company Teamsters

145,000

145,000

0

567,595

371,128

196,468

Prudential Insurance Co of America

550

550

0

1,408

1,408

0

Qwest Occupational Health Trust

9,600

9,600

0

27,514

24,571

2,943

Qwest Pension Trust

22,900

22,900

0

69,479

58,613

10,867

RBC Capital Market

5,000

5,000

0

12,798

12,798

0

Retail Clerks Pension Trust #1

35,000

35,000

0

89,583

89,583

0

Retail Clerks Pension Trust #2

17,500

17,500

0

44,791

44,791

0

Silver Convertible Arbitrage Fund, LDC

13,920

13,920

0

35,628

35,628

0

Sphinx Convertible Arb Fund SPC,
c/o SSI Investment Mgmt.

9,160

9,160

0

23,445

23,445

0

Sphinx Convertible Arbitrage SPC

8,673

8,673

0

22,199

22,199

0

Sphinx Fund

4,770

4,770

0

40,952

12,209

28,743

SSI Hedge Convertible Income Fund

3,597

3,597

0

9,207

9,207

0

State of Oregon/Equity

27,465

27,465

0

70,297

70,297

0

Sunrise Partners Limited Partnership

15,000

15,000

0

39,393

38,393

1,000

Syngenta AG

1,025

1,025

0

2,623

2,623

0

TCW Group, Inc.

23,150

23,150

0

59,252

59,252

0

The City of Southfield Fire & Police Retirement System

888

888

0

2,273

2,273

0

 

 

The Estate of James Campbell CH

2,429

2,429

0

6,217

6,217

0

The Estate of James Campbell EST2

13,554

13,554

0

34,691

34,691

0

The Northwestern Mutual Life Insurance Company-Group Annuity Separate Account

5,000

5,000

0

508,592

12,798

495,794

The St. Paul Travelers Companies, Inc.

Commercial Lines

33,600

33,600

0

102,752

85,999

16,753

TQA Master Fund

35,440

35,440

0

269,490

90,709

178,782

TQA Master Plus Fund

18,900

18,900

0

121,679

48,375

73,304

UBS Securities LLC

21,760

21,760

0

567,488

55,695

511,793

Union Pacific Corp Master Retirement Trust

25,000

25,000

0

63,988

63,988

0

United Technologies Corporation Master Retirement Trust

9,231

9,231

0

23,627

23,627

0

UnumProvident Corporation

12,000

12,000

0

36,147

30,714

5,433

Van Kampen Harbor Fund

36,000

36,000

0

92,142

92,142

0

Vanguard Convertible Securities Fund, Inc.

147,400

147,400

0

467,826

377,270

90,556

Viacom Inc. Pension Plan Master Trust

1,225

1,225

0

3,135

3,135

0

Virginia Retirement System

69,700

69,700

0

203,300

178,397

24,903

Wachovia Capital Markets LLC

200,000

200,000

0

511,900

511,900

0

Wachovia Securities International Ltd

160,000

160,000

0

409,520

409,520

0

Waterstone Market Neutral MAC51, Ltd.

20,600

20,600

0

93,294

52,726

40,568

Waterstone Market Neutral Master Fund, Ltd.

109,400

109,400

0

495,392

280,009

215,383

Yield Strategies Fund I, L.P.

60,000

60,000

0

153,570

153,570

0

Zurich Institutional Benchmark Master Fund

10,480

10,480

0

70,412

26,824

43,588

____________

* Includes common stock issuable upon conversion of Chesapeake’s 5.00% Cumulative Convertible Preferred Stock (Series 2005B) at a conversion rate of 2.5595 shares of common stock per share of preferred stock.

 

(1)      The number of shares of Common Stock indicated to be beneficially owned after completion of the offering includes shares issuable within 60 days of the date hereof upon conversion of convertible securities.