UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark one) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-33156 First Solar, Inc. (Exact name of registrant as specified in its charter) Delaware 20-4623678 (State or other jurisdiction of i ...

First Solar, Inc. (NASDAQ:FSLR) Q3 2019 Results Earnings Conference Call October 24, 2019 4:30 PM ET Company Participants Adrianna Defranco - IR Mark Widmar - CEO Alex Bradley - CFO Conference Call Participants Philip Shen - Roth Capital Partners Julien Dumoulin-Smith - Bank of America Brian Lee - Goldman Sachs Ben Kallo - Baird Jeff Osborne - Cowen and Company Mark Strouse - JPMorgan Michael Weinstein - Credit Suisse Joseph Osha - JMP Securities Operator Good afternoon, everyone, and welcome to First Solar ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark one) ☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 or ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-33156 First Solar, Inc. (Exact name of registrant as specified in its charter) Delaware 20-4623678 (State or other jurisdicti ...

Financial Data and Key Metrics Changes - The company reported a second-quarter loss of $0.18 per share, attributed to increased variable compensation and tax expenses, but maintained full-year earnings per share guidance [4][33] - Net sales in Q2 were $585 million, an increase of $53 million compared to the prior quarter, primarily due to increased module sales and project sales [30] - Gross margin improved to 13% in Q2 from breakeven in Q1, with the systems segment gross margin at 18% and module segment gross margin at 5% [31] Business Line Data and Key Metrics Changes - The Series 6 program achieved record quarterly production and shipments, with 893 megawatts produced in Q2 and 322 megawatts in July, marking the best production month [13][11] - The company recorded 4.3 gigawatts of net bookings in 2019, including over 2 gigawatts since the last earnings call, with future expected shipments at 12.9 gigawatts [16][20] - The systems revenue accounted for 61% of total quarterly net sales, down from 63% in Q1 [31] Market Data and Key Metrics Changes - The U.S. solar market is seeing increased momentum with eight states adopting 100% clean energy goals and a projected increase in grid-connected energy storage to 2.5 gigawatts by 2023 [7][8] - Corporate power purchase agreements (PPAs) reached over 13 gigawatts in 2018, doubling from 2017, indicating strong corporate demand for solar solutions [8] Company Strategy and Development Direction - The company is focused on expanding its Series 6 production capacity and improving cost per watt, with a target of a 30% reduction from Q1 to Q4 [15][36] - The company plans to leverage synergies from its multi-factory operations to enhance production efficiency and throughput [14][50] - The company is also exploring options for additional capacity and efficiency improvements across its factories [52] Management's Comments on Operating Environment and Future Outlook - Management expressed optimism about the growing demand for utility-scale solar driven by economic factors and community commitments to renewable energy [5][6] - The company acknowledged challenges posed by the exemption of bifacial panels from tariffs, which could impact competitive dynamics in the market [18][49] - Management highlighted the importance of maintaining a strong customer relationship and the ability to deliver on contracts as a competitive advantage [66] Other Important Information - The company is involved in an ongoing class action lawsuit, with a trial set to begin in January 2020, and is preparing to defend its position vigorously [25] - The company’s cash and marketable securities balance at the end of Q2 was $2.1 billion, with total debt reduced to $481 million [34] Q&A Session Summary Question: Update on cost per watt trajectory and bookings - Management confirmed satisfaction with the first-half cost per watt reduction and highlighted ongoing efforts to improve yields and reduce labor costs [44][45] - Bookings have remained strong, with new customer agreements secured post-bifacial exemption [47] Question: Insights on gross margins and capacity expansion - The gross margin impact from the Cove Mountain and Muscle Shoals projects was clarified, with higher margins recognized upfront [70] - Capacity expansion involves debottlenecking processes with minimal CapEx, allowing for potential rollout across the fleet [68]

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark one) ☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 or ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-33156 First Solar, Inc. (Exact name of registrant as specified in its charter) Delaware 20-4623678 (State or other jurisdiction of ...

Financial Data and Key Metrics Changes - Net sales in Q1 2019 were $532 million, a decrease of $159 million compared to the prior quarter, primarily due to lower systems projects revenue in the U.S. and Japan [21] - Gross margin was breakeven in Q1 compared to 14% in Q4 2018, with the system segment gross margin at 8% and the module segment gross margin at negative 13% [21][22] - The company recorded a first-quarter loss per share of $0.64 compared to earnings per share of $0.49 in the fourth quarter of 2018 [26] Business Line Data and Key Metrics Changes - The percentage of total quarterly net sales from systems revenue in Q1 was 63%, down from 83% in Q4 2018 [21] - The company experienced ramp-related charges of $36 million in Q1, which accounted for approximately 70% of the midpoint forecast for the full year [22] - Net bookings since the last earnings call were 1.1 gigawatts, with expected future shipments totaling 12.2 gigawatts [16] Market Data and Key Metrics Changes - In the U.S., there is a growing impetus to decarbonize electricity, with several states mandating 100% clean electricity standards [8] - Internationally, Europe is expected to have a record year for PV installations, particularly driven by the utility-scale market resurgence in Spain [10] - North America remains the region with the largest number of opportunities in the mid to late-stage pipeline, totaling 3.9 gigawatts DC [19] Company Strategy and Development Direction - The company is focusing on accelerating growth in the corporate PPA segment and has joined the Board of the Renewable Energy Buyers Alliance [9] - The company is restructuring its EPC organization to address recent challenges in project cost management and has installed new leadership [7] - The company aims to achieve a 30% reduction in Series 6 cost per watt from Q1 to Q4 2019 [14] Management's Comments on Operating Environment and Future Outlook - Management noted that the first quarter was adversely impacted by unanticipated non-Series 6 related costs and challenges in the EPC business [5][6] - The company remains optimistic about the demand for PV, citing numerous catalysts driving global opportunities [72] - Management highlighted the importance of maintaining a technology advantage to capture profit pools that competitors cannot [73] Other Important Information - The company expects to start production at its second Series 6 factory in Ohio in early 2020, with construction on track [15] - The cash balance at the end of Q1 was $2.3 billion, a decrease of approximately $400 million from the prior quarter, primarily due to capital investments [27] - The company raised its net sales forecast for 2019 to a revised range of $3.5 billion to $3.7 billion [31] Q&A Session Summary Question: Can you talk about the bookings side and pricing on new bookings? - Management indicated that bookings for the quarter were 1.1 gigawatts, with steady ASPs and no slowdown in momentum [36][38] Question: How many megawatts of Series 6 modules were shipped in Q1? - Approximately 900 megawatts were shipped in Q1, with a significant ramp expected for Q2 [41] Question: What is the status of the Malaysia factory conversion? - Management stated that the decision on the Malaysia factory conversion will depend on market conditions and the momentum around Safe Harbor [53] Question: How much of the backlog is related to Tampa Electric? - The impact of the Tampa Electric project is nearing completion, with remaining work expected to be finished in the coming months [57] Question: Can you clarify the new gross margin guidance? - Management confirmed that the gross margin headwinds were primarily concentrated in Q1, with no additional significant impacts expected for the remainder of the year [51]

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark one) [x] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 or [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-33156 First Solar, Inc. (Exact name of registrant as specified in its charter) Delaware 20-4623678 (State or other jurisdic ...