Property, Plant and Equipment Disclosure
Asset Age Ratios (Summary)
Average Age
Estimated Total Useful Life
Estimated Age, Time Elapsed Since Purchase
Estimated Remaining Life

DexCom Inc., balance sheet: property, plant and equipment

US$ in thousands

	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019	Dec 31, 2018
Land	26,900)	15,600)	15,600)	—)	—)
Building	54,300)	49,100)	49,200)	15,500)	6,000)
Furniture and fixtures	32,600)	30,700)	15,300)	12,800)	9,000)
Computer software and hardware	48,800)	52,700)	35,700)	32,700)	29,200)
Machinery and equipment	449,200)	272,900)	198,900)	130,200)	80,700)
Leasehold improvements	264,400)	251,600)	135,800)	102,500)	80,700)
Construction in progress	542,600)	360,700)	219,000)	132,600)	57,300)
Property and equipment, cost	1,418,800)	1,033,300)	669,500)	426,300)	262,900)
Accumulated depreciation and amortization	(363,200)	(231,500)	(154,200)	(105,000)	(79,800)
Property and equipment, net	1,055,600)	801,800)	515,300)	321,300)	183,100)

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

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Item	Description	The company
Property and equipment, cost	Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.	DexCom Inc. property and equipment, cost increased from 2020 to 2021 and from 2021 to 2022.
Property and equipment, net	Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.	DexCom Inc. property and equipment, net increased from 2020 to 2021 and from 2021 to 2022.

DexCom Inc., asset age ratios

	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019	Dec 31, 2018
Average age ratio	26.09%	22.75%	23.58%	24.63%	30.35%
Estimated total useful life (years)	10	11	10	9	9
Estimated age, time elapsed since purchase (years)	3	2	2	2	3
Estimated remaining life (years)	7	8	8	7	6

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

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Asset age ratio	Description	The company
Average age ratio	As long as straight-line depreciation is used, this is an accurate estimate of asset age as a percentage of depreciable life. The relative age is a useful measure of whether the company fixed asset base is old or new. Newer assets are likely to be more efficient.	DexCom Inc. average age ratio of depreciable property, plant and equipment improved from 2020 to 2021 but then deteriorated significantly from 2021 to 2022.
Estimated total useful life	Over longer time periods, this ratio is a useful measure of company depreciation policy and can be used for comparisons with competitors.	DexCom Inc. estimated total useful life of depreciable property, plant and equipment increased from 2020 to 2021 but then decreased significantly from 2021 to 2022.
Estimated time elapsed since purchase	The approximate age in years of a company fixed assets. Useful for comparison purposes.	DexCom Inc. estimated time elapsed since purchase of depreciable property, plant and equipment improved from 2020 to 2021 but then deteriorated significantly from 2021 to 2022.
Estimated remaining life		DexCom Inc. estimated remaining life of depreciable property, plant and equipment increased from 2020 to 2021 but then decreased significantly from 2021 to 2022.

	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019	Dec 31, 2018
Selected Financial Data (US$ in thousands)
Accumulated depreciation and amortization	363,200)	231,500)	154,200)	105,000)	79,800)
Property and equipment, cost	1,418,800)	1,033,300)	669,500)	426,300)	262,900)
Land	26,900)	15,600)	15,600)	—)	—)
Asset Age Ratio
Average age¹	26.09%	22.75%	23.58%	24.63%	30.35%

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

2022 Calculations

¹ Average age = 100 × Accumulated depreciation and amortization ÷ (Property and equipment, cost – Land)
= 100 × 363,200 ÷ (1,418,800 – 26,900) = 26.09%

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Asset age ratio	Description	The company
Average age	As long as straight-line depreciation is used, this is an accurate estimate of asset age as a percentage of depreciable life. The relative age is a useful measure of whether the company fixed asset base is old or new. Newer assets are likely to be more efficient.	DexCom Inc. average age ratio of depreciable property, plant and equipment improved from 2020 to 2021 but then deteriorated significantly from 2021 to 2022.

	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019	Dec 31, 2018
Selected Financial Data (US$ in thousands)
Property and equipment, cost	1,418,800)	1,033,300)	669,500)	426,300)	262,900)
Land	26,900)	15,600)	15,600)	—)	—)
Depreciation expense related to property and equipment	144,100)	96,300)	64,000)	46,900)	28,600)
Asset Age Ratio (Years)
Estimated total useful life¹	10	11	10	9	9

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

2022 Calculations

¹ Estimated total useful life = (Property and equipment, cost – Land) ÷ Depreciation expense related to property and equipment
= (1,418,800 – 26,900) ÷ 144,100 = 10

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Asset age ratio	Description	The company
Estimated total useful life	Over longer time periods, this ratio is a useful measure of company depreciation policy and can be used for comparisons with competitors.	DexCom Inc. estimated total useful life of depreciable property, plant and equipment increased from 2020 to 2021 but then decreased significantly from 2021 to 2022.

	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019	Dec 31, 2018
Selected Financial Data (US$ in thousands)
Accumulated depreciation and amortization	363,200)	231,500)	154,200)	105,000)	79,800)
Depreciation expense related to property and equipment	144,100)	96,300)	64,000)	46,900)	28,600)
Asset Age Ratio (Years)
Time elapsed since purchase¹	3	2	2	2	3

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

2022 Calculations

¹ Time elapsed since purchase = Accumulated depreciation and amortization ÷ Depreciation expense related to property and equipment
= 363,200 ÷ 144,100 = 3

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Asset age ratio	Description	The company
Estimated time elapsed since purchase	The approximate age in years of a company fixed assets. Useful for comparison purposes.	DexCom Inc. estimated time elapsed since purchase of depreciable property, plant and equipment improved from 2020 to 2021 but then deteriorated significantly from 2021 to 2022.

	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019	Dec 31, 2018
Selected Financial Data (US$ in thousands)
Property and equipment, net	1,055,600)	801,800)	515,300)	321,300)	183,100)
Land	26,900)	15,600)	15,600)	—)	—)
Depreciation expense related to property and equipment	144,100)	96,300)	64,000)	46,900)	28,600)
Asset Age Ratio (Years)
Estimated remaining life¹	7	8	8	7	6

Based on: 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31), 10-K (reporting date: 2018-12-31).

2022 Calculations

¹ Estimated remaining life = (Property and equipment, net – Land) ÷ Depreciation expense related to property and equipment
= (1,055,600 – 26,900) ÷ 144,100 = 7

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Asset age ratio	Description	The company
Estimated remaining life		DexCom Inc. estimated remaining life of depreciable property, plant and equipment increased from 2020 to 2021 but then decreased significantly from 2021 to 2022.

DexCom Inc. (NASDAQ:DXCM)

Analysis of Property, Plant and Equipment

Property, Plant and Equipment Disclosure

Asset Age Ratios (Summary)

Average Age

Estimated Total Useful Life

Estimated Age, Time Elapsed since Purchase

Estimated Remaining Life