Rambus Inc.
Supplemental Reconciliation of GAAP to Non-GAAP Results
(In thousands)
(Unaudited)

Three Months Ended

December 31,

2020

2019

Total operating expenses

$

59,466

$

58,582

Adjustments:

Stock-based compensation expense

(6,165)

(4,819)

Acquisition-related/divestiture costs and retention bonus expense

(781)

(4,250)

Amortization of acquired intangible assets

(229)

(334)

Restructuring and other charges

(3,253)

(4,588)

Depreciation expense on unused EDA software licenses

(2,183)

—

Expense on abandoned operating leases

(174)

—

Facility restoration costs

—

(959)

Gain on divestiture

—

7,698

Non-GAAP total operating expenses

$

46,681

$

51,330

Interest and other income (expense), net

$

462

$

3,713

Adjustments:

Interest income related to significant financing component from fixed-fee patent and technology
licensing arrangements

(2,895)

(4,469)

Non-cash interest expense on convertible notes

1,849

1,749

Non-GAAP interest and other income (expense), net

$

(584)

$

993

Rambus Inc.
Reconciliation of GAAP Forward-Looking Estimates to Non-GAAP Forward-Looking Estimates
(In millions)
(Unaudited)

2021 First Quarter Outlook

Three Months Ended
March 31, 2021

Low

Forward-looking operating costs and expenses

$

72.7

$

68.7

Adjustments:

Stock-based compensation expense

(7.0)

(7.0)

Amortization of acquired intangible assets

(4.6)

(4.6)

Forward-looking Non-GAAP operating costs and expenses

$

61.1

$

57.1

Forward-looking interest and other income (expense), net

$

(0.1)

$

(0.1)

Adjustments:

Interest income related to significant financing component from fixed-fee patent and technology licensing
arrangements

(2.7)

(2.7)

Non-cash interest expense on convertible notes

1.8

1.8

Forward-looking Non-GAAP interest and other income (expense), net

$

(1.0)

$

(1.0)