Q2/17 gross profit up 47%, operating cash flow up 25%,
production up 13%, all-in sustaining costs/oz down 12%
All monetary amounts are expressed in U.S. dollars, unless otherwise indicated.
Refer to the Management Discussion and Analysis (MD&A) and Unaudited Consolidated
Interim Financial Statements for the six months ended June 30, 2017 for more information.
Toronto, Ontario, August 9, 2017 - IAMGOLD Corporation (“IAMGOLD” or the “Company”) reported its
consolidated financial and operating results for the quarter ended June 30, 2017.
"We had another outstanding quarter," said Steve Letwin, President and CEO of IAMGOLD. "Rosebel and
Essakane are benefitting from major operational improvements and the Westwood ramp-up remains on
track. Net operating cash flow increased 25% from the same quarter last year and 30% from the previous
quarter, and our year-to-date gross profit was 129% higher than the previous year. Our balance sheet
remains strong with $800 million in cash, cash equivalents and restricted cash.
“The pace of transformation at IAMGOLD is accelerating," continued Mr. Letwin. "A number of catalysts
have moved into gear as we execute both short-cycle and long-cycle growth strategies. The Rosebel
concession increased its reserves by 80% and next month we expect an initial resource estimate for
Saramacca. We entered into a joint venture for our Côté Gold Project and completed a pre-feasibility
study, which saw a significant conversion of resources to reserves and demonstrated low operating costs
and an attractive rate of return."
Second Quarter 2017 Highlights
Operating Performance
• Attributable gold production of 223,000 oz, up 13% from Q2/16.
• Cost of sales1 of $767/oz, down 5% from Q2/16.
• All-in sustaining costs2 of $975/oz sold, down 12% from Q2/16.
• Total cash costs2 of $735/oz produced, down 3% from Q2/16.
• Gold margin2 of $516/oz, up $3/oz from Q2/16.
• Maintaining 2017 production and cost guidance.

Financials
• Gross profit of $35.9 million, up $11.5 million or 47% from Q2/16.
• Net earnings of $506.5 million ($1.09 per share), up from a net loss of $12.2 million ($0.03 per share) in Q2/16, primarily due to impairment charge reversals at the Côté Gold Project and the Rosebel mine.
• Adjusted net earnings2 of $4.3 million ($0.01 per share2), down $1.6 million ($nil per share2) from Q2/16.
• Net cash from operating activities of $88.7 million, up 25% from Q2/16 and 30% from Q1/17.
• Net cash from operating activities before changes in working capital2 of $70.4 million, up 7% from Q2/16
• Cash, cash equivalents and restricted cash of $800.1 million as at June 30, 2017.
• Replaced the restricted cash held by the Government of Quebec to guarantee the asset retirement obligation related to the Doyon mine with uncollateralized surety bonds of C$123.6 million (June 30, 2017 - $95.2 million).

Developments
• On June 20, 2017, completed the sale of a 30% interest in the Côté Gold Project to Sumitomo Metal Mining Co., Ltd. for $195 million. As a result, we recognized a reversal of the previously recorded impairment charge of $400 million, and a gain on the sale of $19.2 million.
• On June 5, 2017, announced positive results from a pre-feasibility study for the Côté Gold Project, which outlined an economically viable project and confirmed the development concept previously set out in the Preliminary Economic Assessment. Highlights of the project economics include attributable proven and probable reserves of 3.8 million ounces, a mine life of 17 years with average annual attributable production of 207,000 ounces, life-of-mine cash costs of $605 an ounce and all-in sustaining costs of $689 an ounce, an after-tax Net Asset Value of $703 million and an after-tax Internal Rate of Return of 14%.
• On May 15 and June 16, 2017, reported final drilling results from the Saramacca drilling campaign in preparation for an initial resource estimate in September 2017. Highlights include 43.5 metres grading 12.26 g/t Au and 41.0 metres grading 5.56 g/t Au.
• On May 11, 2017, reported final results from the winter 2017 drilling program at the Monster Lake Project in Quebec, indicating continuity of very high grades and new areas of mineralization.
Highlights include 4.4 metres grading 5.21 g/t Au and 3.1 metres grading 121.67 g/t Au.
Subsequent to the quarter-end, on July 6, 2017, additional results were reported, with highlights including 5.0 metres grading 80.28 g/t Au.
• On May 31, 2017, reported additional drilling results at the Boto Gold Project in Senegal in preparation for a resource update later this year. Highlights include 19 metres grading 3.28 g/t Au, and 77.0 metres grading 4.35 g/t Au, including 9.0 metres grading 11.76 g/t Au.
Subsequent to Quarter-End
• On July 26, 2017, reported a reserve and resource update for the Rosebel Mining concession, including an 80% increase in attributable reserves to 3.5 million ounces from 2.0 million ounces at the end of 2016, which is expected to extend the life of mine to 2028, leading to the reversal of a previously recognized impairment charge. The reserve and resource update does not include Saramacca.

SUMMARY OF FINANCIAL AND OPERATING RESULTS
Three months ended
June 30,
Six months ended
June 30,
Financial Results ($ millions, except where noted) 2017 2016 2017 2016
Revenues $ 274.5 $ 232.5 $ 535.0 $ 452.2
Cost of sales $ 238.6 $ 208.1 $ 464.1 $ 421.3
Gross profit $ 35.9 $ 24.4 $ 70.9 $ 30.9
Net earnings (loss) attributable to equity holders of IAMGOLD $ 506.5 $ (12.2) $ 488.5 $ 40.9
Net earnings (loss) attributable to equity holders ($/share) $ 1.09 $ (0.03) $ 1.06 $ 0.10
Adjusted net earnings (loss) attributable to equity holders of
IAMGOLD1 $ 4.3 $ 5.9 $ 9.4 $ (1.4)
Adjusted net earnings (loss) attributable to equity holders ($/share)1 $ 0.01 $ 0.01 $ 0.02 $ —
Net cash from operating activities $ 88.7 $ 71.2 $ 157.0 $ 122.6
Net cash from operating activities before changes in working capital1 $ 70.4 $ 65.9 $ 156.2 $ 117.6
Key Operating Statistics
Gold sales – attributable (000s oz) 219 187 431 378
Gold production – attributable (000s oz) 223 197 437 388
Average realized gold price1 ($/oz) $ 1,251 $ 1,269 $ 1,241 $ 1,228
Cost of sales2 ($/oz) $ 767 $ 805 $ 768 $ 816
Total cash costs1 ($/oz) $ 735 $ 756 $ 751 $ 751
All-in sustaining costs1 ($/oz) $ 975 $ 1,114 $ 983 $ 1,099
Gold margin1 ($/oz) $ 516 $ 513 $ 490 $ 477

1 This is a non-GAAP measure. Refer to the non-GAAP performance measures section of the MD&A.

2 Cost of sales, excluding depreciation, as disclosed in note 29 of the Company's consolidated interim financial statements is on an attributable ounce
sold basis (excluding the non-controlling interests of 10% at Essakane and 5% at Rosebel) and doesn't include Joint Ventures which are accounted for
on an equity basis.
SECOND QUARTER 2017 HIGHLIGHTS
Financial Performance
• Revenues for the second quarter 2017 were $274.5 million, up $42.0 million or 18% from the same
prior year period, primarily due to higher sales at Essakane ($30.0 million) and Westwood ($17.4
million), partially offset by a lower realized gold price ($4.3 million) and lower sales at Rosebel ($1.4
million).
• Cost of sales for the second quarter 2017 was $238.6 million, up $30.5 million or 15% from the same
prior year period. The increase was primarily due to higher operating costs ($19.7 million), higher
depreciation ($9.2 million) and higher royalties expense ($1.6 million). Operating costs were higher
primarily as a result of higher sales and lower capitalized stripping at Essakane and higher mining
activities at Westwood.
• Depreciation expense for the second quarter 2017 was $71.5 million, up $9.2 million from the same
prior year period primarily due to higher production and sales and higher amortization of capitalized
stripping at Essakane, partially offset by lower amortization of capitalized stripping at Rosebel.
• Income tax expense for the second quarter 2017 was $53.5 million, up $39.5 million from the same
prior year period. Income tax expense for the second quarter 2017 comprised current income tax
expense of $19.7 million (2016 - $4.6 million) and deferred income tax expense of $33.8 million (2016
- $9.4 million). The increase in income tax expense was primarily due to changes to deferred income
tax assets and liabilities as a result of the reversals of impairment charges and fluctuations in foreign
exchange, and differences in the level of taxable income in our operating jurisdictions from one period
to the next.
• Net earnings attributable to equity holders for the second quarter 2017 was $506.5 million ($1.09 per
share), up from a net loss of $12.2 million ($0.03 per share) for the same prior year period. The
increase of $518.7 million or $1.12 per share was mainly due to reversals of impairment charges
relating to the Côté Gold Project and the Rosebel mine ($524.1 million) and the resulting gain on the
sale of a 30% interest in the Côté Gold Project ($19.2 million), and higher gross profit ($11.5 million),
partially offset by higher income tax expense ($39.5 million).
• Adjusted net earnings attributable to equity holders2 for the second quarter 2017 were $4.3 million
($0.01 per share2), down $1.6 million ($nil per share) from the same prior year period.
• Net cash from operating activities for the second quarter 2017 was $88.7 million, up $17.5 million from
the same prior year period. The increase was mainly due to higher earnings after non-cash
adjustments ($13.3 million), a change in the movement of non-cash working capital items ($13.0
million), and lower net settlement of derivatives ($3.7 million), partially offset by an increase in income
taxes paid ($12.0 million).
• Net cash from operating activities before changes in working capital2 for the second quarter 2017 was
$70.4 million, up $4.5 million from the same prior year period.
Financial Position
• Cash, cash equivalents and restricted cash were $800.1 million at June 30, 2017, up $37.4 million
from December 31, 2016. The increase was primarily due to net proceeds from the issuance of the
7.00% senior secured notes on March 16, 2017 ($393.6 million), cash generated from operating
activities ($173.7 million), net proceeds from the sale of a 30% interest in the Côté Gold Project ($96.5
million), proceeds from the issuance of flow-through shares ($15.1 million), partially offset by the
redemption of the 6.75% senior unsecured notes ($505.6 million), spending on Property, plant and
equipment and Exploration and evaluation assets ($93.8 million), interest paid ($16.5 million) and
income taxes paid ($16.7 million).
Production and Costs
• Attributable gold production, inclusive of joint venture operations, was 223,000 ounces for the second
quarter 2017, up 26,000 ounces from the same prior year period. The increase was due to the continued ramp-up at Westwood (17,000 ounces) and higher throughput at Essakane (12,000
ounces), partially offset by lower grades at Sadiola (4,000 ounces).
• Attributable gold sales, inclusive of joint venture operations, were 219,000 ounces for the second
quarter 2017, up 32,000 ounces from the same prior year period, primarily due to higher sales at
Essakane (21,000 ounces) and Westwood (14,000 ounces).
• Cost of sales1 per ounce for the second quarter 2017 was $767, down 5% from the same prior year period due to higher sales, partially offset by the factors noted in the Cost of sales discussion in the Financial Performance section above.
• Total cash costs2 per ounce produced for the second quarter 2017 were $735, down 3% from the same prior year period primarily due to higher production, partially offset by lower capitalized stripping
due to mine sequencing at Essakane. The normalization of Westwood's costs was discontinued in the second quarter 2017 (Q2/16 - $23 per ounce produced) and realized derivative losses were $nil (Q2/16 - gain of $2 per ounce produced).
• All-in sustaining costs2 per ounce sold were $975 for the second quarter 2017,12% lower than the
same prior year period as a result of lower sustaining capital expenditures. The normalization of Westwood's costs was discontinued in the second quarter 2017 (Q2/16 - $24 per ounce sold) and realized derivative losses were $nil (Q2/16 - gain of $2 per ounce sold).
Commitment to Zero Harm Continues
• The DART rate3, representing the frequency of all types of serious injuries across IAMGOLD for the second quarter 2017 was 0.44, below our target of 0.56.

ATTRIBUTABLE GOLD PRODUCTION AND COSTS
Gold Production
(000s oz)
Cost of Sales1
($ per ounce)
Total Cash Costs3
($ per ounce
produced)
All-in Sustaining
Costs3
($ per ounce sold)
Three months ended June 30, 2017 2016 2017 2016 2017 2016 2017 2016
Owner-operator
Essakane (90%) 101 89 $ 750 $ 728 $ 698 $ 679 $ 922 $ 1,090
Rosebel (95%) 74 73 752 789 722 765 923 1,051
Westwood (100%)2 33 16 843 1,278 800 948 995 1,157
208 178 $ 767 $ 805 723 738 975 1,130
Joint Ventures 15 19 910 926 965 970
Total operations 223 197 $ 735 $ 756 $ 975 $ 1,114
Cost of sales1 ($/oz) $ 767 $ 805
Cash costs, excluding royalties $ 682 $ 703
Royalties 53 53
Total cash costs3 $ 735 $ 756
All-in sustaining costs3 $ 975 $ 1,114

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