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Biogen Inc. (BIIB) SEC Filings & Earnings Calls

EquiReason read 20 Biogen Inc. SEC filings in the last 12 months. Latest: 8-K on 2026-07-29 — Biogen reports strong Q2 2026 results: total revenue $2.7B (+3% YoY), Growth Portfolio revenue $1.06B (+24% YoY). GAAP EPS $0.66, Non-GAAP EPS $3.60. Guidance updated reflecting st.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

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last 12 months · SEC

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29 Jul 20268-K · 2.02Biogen reports strong Q2 2026 results: total revenue $2.7B (+3% YoY), Growth Portfolio revenue $1.06B (+24% YoY). GAAP EPS $0.66, Non-GAAP EPS $3.60. Guidance updated reflecting strengthening underlying business performance.earningsopen

Figures in the filing · each found in the filing text

Total Revenue · Q2-2026$2.74B+3% y/y
GAAP diluted EPS · Q2-2026$0.66-85% y/y
Non-GAAP diluted EPS · Q2-2026$3.60-34% y/y
Growth Portfolio Revenue · Growth Portfolio · Q2-2026$1.06B+24% y/y
SPINRAZA Revenue · Rare Disease · Q2-2026$402M+2% y/y
VUMERITY Revenue · Multiple Sclerosis · Q2-2026$197M-7% y/y
LEQEMBI Global In-Market Sales · Alzheimer's · Q2-2026$184M+15% y/y
SKYCLARYS Revenue · Rare Disease · Q2-2026$168M+29% y/y
SYFOVRE Revenue · Specialized Immunology · Q2-2026$162M+8% y/y
ZURZUVAE Revenue · Other · Q2-2026$71M+53% y/y

Guidance

Full year 2026 guidance updated to reflect strengthening underlying business performance; Apellis acquisition expected ~$0.85 dilution to Non-GAAP diluted EPS for FY2026; accretive in 2027; run rate synergies exiting 2027 at least $250M.

Guidance raised reflecting stronger underlying business; Apellis acquisition creates near-term EPS dilution but expected to be accretive in 2027 with significant synergies.

Risks flagged

Legacy MS portfolio continues to decline (-13% YoY), partially offsetting Growth Portfolio gains.

“MS product revenue $963M (-13% YoY); Legacy MS $767M.”

EPS significantly down due to deal-related charges and increased R&D investment; GAAP EPS $0.66 vs $4.33.

“GAAP diluted EPS $0.66 (down 85% YoY); Non-GAAP diluted EPS $3.60 (down 34% YoY).”

Apellis acquisition integration risk; expected dilution of $0.85 to Non-GAAP EPS in FY2026.

“Apellis acquisition expected ~$0.85 dilution to Non-GAAP diluted EPS for FY2026.”

Biosimilars revenue declining (-16% YoY) due to competitive pressure.

“Biosimilars revenue $153M (-16% YoY).”
Read the original on SEC EDGAR ↗
29 Jul 202610-QBiogen completed acquisition of Apellis for $5.4B, adding SYFOVRE and EMPAVELI, and recorded $153.2M in restructuring charges for integration.acquisitionopen

Figures in the filing · each found in the filing text

Total revenue · Q2-2026$2.74B+3% y/y
Net income attributable to Biogen Inc. · Q2-2026$98M-85% y/y
Product revenue, net · Q2-2026$1.92B+2% y/y
Revenue from anti-CD20 therapeutic programs · Q2-2026$514M+10% y/y
Alzheimer's collaboration revenue · Q2-2026$64M+16% y/y
Contract manufacturing, royalty and other revenue · Q2-2026$242M-1% y/y
Cost of sales, excluding amortization and impairment of acquired intangible assets · Q2-2026$777M+28% y/y
Research and development · Q2-2026$530M+33% y/y
Selling, general and administrative · Q2-2026$710M+22% y/y
Restructuring charges · Q2-2026$165M-23729% y/y

Risks flagged

Integration and Restructuring Risk

“For the three and six months ended June 30, 2026, we recognized approximately $153.2 million of net pre-tax restructuring charges, primarily consisting of employee severance costs and the acceleration of bonus payments that were subject to a double-trigger provision.” · word for word

Debt Increase

“Notes payable and term loan 7,290.3 6,286.8” · word for word

MS Franchise Decline

“Subtotal: Multiple Sclerosis 621.0 342.3 963.3 657.4 449.8 1,107.2” · word for word

Biosimilar Revenue Decline

“Subtotal: Biosimilars 0.1 152.7 152.8 2.5 179.2 181.7” · word for word
Read the original on SEC EDGAR ↗
1 Jul 20268-K · 2.02Acquired IPR&D Charge Q2 2026 $164M; Acquired IPR&D Charge Q3 2026 Range Low $290M; Acquired IPR&D Charge Q3 2026 Range High $320Mearningsopen

Figures in the filing · each found in the filing text

Acquired IPR&D Charge Q2 2026 · Q2-2026$164M
Acquired IPR&D Charge Q3 2026 Range Low · Q3-2026$290M
Acquired IPR&D Charge Q3 2026 Range High · Q3-2026$320M

Risks flagged

Large IPR&D charges reduce near-term EPS; Q2 charge $0.95/share, Q3 charge $1.75-$1.95/share.

“estimated charge is expected to impact GAAP and non-GAAP net income per diluted share for the second quarter of 2026 by approximately $0.95 per share” · word for word

Uncertainty in forecasting future IPR&D charges due to transaction timing and magnitude.

“Biogen does not forecast such acquired in-process research and development, upfront and milestone expense due to the uncertainty of the future occurrence, magnitude and timing of these transactions” · word for word
Read the original on SEC EDGAR ↗
14 May 2026SC 13D/ABiogen completed acquisition of Apellis Pharmaceuticals for $41.00 per share plus CVR.acquisitionSEC ↗
14 May 2026SC 13D/ABiogen completed acquisition of Apellis Pharmaceuticals for $41.00 per share plus CVR.acquisitionSEC ↗
14 May 20268-K · 1.01, 2.01, 2.03, 7.01Biogen completed acquisition of Apellis Pharmaceuticals for $41/share plus CVRs worth up to $4/share, financed with $2B term loan facilities.acquisitionopen

Risks flagged

Integration risk of Apellis and SYFOVRE; CVR milestones may not be achieved; increased leverage from $2B term loan.

“CVR milestones require SYFOVRE net sales of $1.5B and $2.0B; no assurance milestones will be achieved. Leverage covenant at 3.75x.”
Read the original on SEC EDGAR ↗
29 Apr 20268-K · 2.02GAAP diluted EPS $2.15 (+31% y/y); Non-GAAP diluted EPS $3.57 (+18% y/y); LEQEMBI global in-market sales $168M (+74% y/y); Guidance: FY2026 non-GAAP diluted EPS $14.25-$15.25; total revenue expected to decline mid-single digit %earningsopen

Figures in the filing · each found in the filing text

GAAP diluted EPS · Q1-2026$2.15+31% y/y
Non-GAAP diluted EPS · Q1-2026$3.57+18% y/y
LEQEMBI global in-market sales · Alzheimer's · Q1-2026$168M+74% y/y
SKYCLARYS global revenue · Rare disease · Q1-2026$151M+22% y/y
ZURZUVAE revenue · Other · Q1-2026$55M+100% y/y
VUMERITY global revenue · Multiple sclerosis · Q1-2026$179M+29% y/y
SPINRAZA global revenue · Rare disease · Q1-2026$374M-12% y/y
QALSODY global revenue · Rare disease · Q1-2026$33M+110% y/y

Guidance

FY2026 non-GAAP diluted EPS $14.25-$15.25; total revenue expected to decline mid-single digit %

Updated FY2026 non-GAAP EPS guidance reflects ~$1.00 impact from acquired IPR&D charges; revenue expected to decline mid-single digit; Apellis acquisition expected to close in Q2 2026 with updated guidance then.

Risks flagged

SPINRAZA revenue decline of 12% YoY due to timing of ex-U.S. shipments; MS portfolio flat.

“SPINRAZA global revenue of $374 million declined 12% year-over-year with ex-U.S. sales impacted by the timing of shipments.” · word for word

Full-year 2026 total revenue expected to decline by a mid-single digit percentage.

“Full year 2026 total revenue expected to decline by a mid-single digit percentage versus full year 2025.” · word for word
Read the original on SEC EDGAR ↗
29 Apr 202610-QTotal Revenue $2.48B (+2% y/y); Net Income $320M (+33% y/y); Operating Cash Flow $646M (+149% y/y)open

Figures in the filing · each found in the filing text

Total Revenue · Q1-2026$2.48B+2% y/y
Net Income · Q1-2026$320M+33% y/y
Operating Cash Flow · Q1-2026$646M+149% y/y
Revenue from Anti-CD20 Therapeutic Programs · Anti-CD20 · Q1-2026$419M+11% y/y
Alzheimer's Collaboration Revenue · Alzheimer's · Q1-2026$60M+80% y/y
Contract Manufacturing Revenue · Contract Manufacturing · Q1-2026$237M-16% y/y
Diluted EPS · Q1-2026$2.15+31% y/y
Cash and Cash Equivalents · 2026-03-31$3.38B
Capital Expenditures · Q1-2026$51M+38% y/y

Risks flagged

MS Franchise Generic Erosion

“TECFIDERA $109.5 million and $206.1 million.”

Contract Manufacturing Revenue Decline

“Contract manufacturing revenue $237.2 million and $282.3 million.”

Inventory Step-Up Amortization Pressure

“Amortization from the fair value step-up adjustment was approximately $107.6 million and $51.4 million, respectively.” · word for word

Apellis Acquisition Integration Risk

“We would pay Apellis shareholders $41.00 per share in cash, representing an expected total transaction value of approximately $5.6 billion.”
Read the original on SEC EDGAR ↗
28 Apr 2026DEF 14AGrowth Product Revenue $3.30B (+19% y/y); Total Revenue $9.78B; Non-GAAP Diluted EPS $15.28open

Figures in the filing · each found in the filing text

Growth Product Revenue · FY2025$3.30B+19% y/y
Total Revenue · FY2025$9.78B
Non-GAAP Diluted EPS · FY2025$15.28
GAAP Net Income · FY2025$1.29B-21% y/y
Free Cash Flow · FY2025$2.05B-25% y/y
Operating Cash Flow · FY2025$2.20B-23% y/y
Capital Expenditures · FY2025$154M+0% y/y
Total Stockholder Return · FY202515.0%
CEO Target Pay · FY2025$17M
CEO Realized Pay vs Target · 2022-2025-48.0%

Risks flagged

Low Say on Pay Support

“Following the 2025 Annual Meeting where our Say on Pay proposal received 67.7% support.” · word for word

PSU Payout Risk

“The 2023–2025 PSU cycle and the 2022–2024 PSU cycle also expired with $0 value delivered because we did not achieve the threshold performance required.” · word for word

MS Revenue Decline

“Total Revenue: This target, which declined compared to 2024, reflects continued erosion of MS revenues due to TECFIDERA generics in Europe and TYSABRI biosimilar entry timing and erosion.” · word for word

Growth Product Revenue Miss

“Growth Revenue: $2,411M achieved vs $2,551M target (75% of target)”
Read the original on SEC EDGAR ↗
6 Apr 20268-K · 2.02Biogen pre-announces Q1 2026 GAAP/non-GAAP results include ~$34M IPR&D charge (~$0.19/share impact); results not finalized.earningsopen

Figures in the filing · each found in the filing text

acquired in-process R&D expense · Q1-2026$34M
EPS impact from IPR&D · Q1-2026$0.19

Risks flagged

Uncertainty in final Q1 2026 results due to ongoing closing procedures

“Results for the quarter ended March 31, 2026, have not been finalized and are subject to our financial statement closing procedures” · word for word
Read the original on SEC EDGAR ↗
6 Apr 2026SC 13DBiogen announces acquisition of Apellis Pharmaceuticals for $41.00 per share plus contingent value rights up to $4.00 per share, with milestones tied to SYFOVRE sales.being acquiredopen

Figures in the filing · each found in the filing text

Upfront Consideration per Share$41.00
Maximum CVR Payment per Share$4.00
SYFOVRE Net Sales Milestone 1 · SYFOVRE$1.50B
SYFOVRE Net Sales Milestone 2 · SYFOVRE$2.00B
Biogen Beneficial Ownership Percentage14.2%

Risks flagged

Milestone Achievement Uncertainty

“There can be no assurance that any Milestone will be achieved prior to the expiration or termination of the CVR Agreement, or that payment will be required of Biogen with respect to any Milestone.” · word for word
Read the original on SEC EDGAR ↗
6 Apr 2026SC 13DBiogen announces acquisition of Apellis Pharmaceuticals for $41.00 per share plus contingent value rights up to $4.00 per share, with milestones tied to SYFOVRE sales.being acquiredopen

Figures in the filing · each found in the filing text

Upfront Consideration per Share$41.00
Maximum CVR Payment per Share$4.00
SYFOVRE Net Sales Milestone 1 · SYFOVRE$1.50B
SYFOVRE Net Sales Milestone 2 · SYFOVRE$2.00B
Biogen Beneficial Ownership Percentage14.2%

Risks flagged

Milestone Achievement Uncertainty

“There can be no assurance that any Milestone will be achieved prior to the expiration or termination of the CVR Agreement, or that payment will be required of Biogen with respect to any Milestone.” · word for word
Read the original on SEC EDGAR ↗
31 Mar 20268-K · 1.01, 8.01Biogen entered into a definitive merger agreement to acquire Apellis Pharmaceuticals for $41.00 per share plus contingent value rights up to $4.00 per share, total implied enterprise value ~$4.6B. The deal includes a $205M termination fee.acquisitionopen

Figures in the filing · each found in the filing text

Offer price per share · 2026-03-31$41.00

Risks flagged

Integration risk; CVR milestones may not be achieved.

“CVR payments contingent on SYFOVRE sales milestones; no assurance milestones will be achieved.”
Read the original on SEC EDGAR ↗
11 Mar 20268-K · 5.02Reported a director or officer change (departure, election, appointment or pay arrangement)open

Risks flagged

Loss of key legal officer; temporary leadership gap.

“Departure of Chief Legal Officer; search initiated.”
Read the original on SEC EDGAR ↗
11 Feb 20268-K · 5.02, 8.01Reported the departure of a director or principal officer (CEO/CFO change); disclosed a material event under other events (litigation, recall, contract loss, or major announcement)open

Risks flagged

Board chair departure, though orderly, introduces leadership transition risk.

“Caroline Dorsa... would not stand for re-election”
Read the original on SEC EDGAR ↗
6 Feb 202610-KRisks named: IRA Drug Pricing Impact, Competition from generics/biosimilars, Dependence on collaboratorsopen

Risks flagged

IRA Drug Pricing Impact

“we expect the IRA's drug pricing controls and Medicare Part D redesign to have an adverse impact on sales, particularly for our products that are more substantially reliant on Medicare reimbursement.” · word for word

Competition from generics/biosimilars

“Our products continue to face increasing competition from the introduction of new originator therapies, generics, prodrugs and biosimilars of existing products” · word for word

Dependence on collaborators

“We depend on relationships with collaborators and other third parties for revenue, and for the development, regulatory approval, commercialization and marketing of certain of our products and product candidates” · word for word
Read the original on SEC EDGAR ↗
6 Feb 20268-K · 2.02Total Revenue $9.89B (+2% y/y); Non-GAAP Diluted EPS $15.28 (-7% y/y); GAAP Diluted EPS $8.79 (-21% y/y); Guidance: FY2026 Non-GAAP diluted EPS $15.25-$16.25; total revenue decline mid-single digit %earningsopen

Figures in the filing · each found in the filing text

Total Revenue · FY2025$9.89B+2% y/y
Non-GAAP Diluted EPS · FY2025$15.28-7% y/y
GAAP Diluted EPS · FY2025$8.79-21% y/y
LEQEMBI Global In-Market Sales · Alzheimer's · Q4-2025$134M+54% y/y
SKYCLARYS U.S. Revenue · Rare Disease · Q4-2025$89M
ZURZUVAE Revenue · Other · Q4-2025$66M
Multiple Sclerosis Product Revenue · Multiple Sclerosis · FY2025$4.04B-7% y/y
Rare Disease Revenue · Rare Disease · FY2025$2.15B+8% y/y
Biosimilars Revenue · Biosimilars · FY2025$729M-8% y/y
Alzheimer's Collaboration Revenue · Alzheimer's · FY2025$178M+197% y/y

Guidance

FY2026 Non-GAAP diluted EPS $15.25-$16.25; total revenue decline mid-single digit %

FY2026 EPS guidance above FY2025 actual ($15.28) midpoint of $15.75 vs $15.28; revenue expected to decline due to MS and biosimilars headwinds, but growth products and pipeline provide optimism.

Risks flagged

Revenue decline expected in FY2026 due to MS franchise erosion and biosimilars pressure.

“Expect full year 2026 total revenue to decline by a mid-single digit percentage versus full year 2025.” · word for word

Dependence on pipeline success for long-term growth; multiple late-stage readouts expected.

“10 additional potentially registrational studies across our pipeline expected to read out sequentially over the next four years.” · word for word
Read the original on SEC EDGAR ↗
14 Jan 20268-K · 2.02Acquired in-process research and development, upfront and milestone expense $222M; GAAP and non-GAAP net income per diluted share impact $1.26earningsopen

Figures in the filing · each found in the filing text

acquired in-process research and development, upfront and milestone expense · Q4-2025$222M
GAAP and non-GAAP net income per diluted share impact · Q4-2025$1.26

Risks flagged

Uncertainty in final Q4 2025 results due to preliminary nature; charge may signal higher deal costs or pipeline investment.

“Results for the quarter ended December 31, 2025, have not been finalized and are subject to our financial statement closing procedures.” · word for word
Read the original on SEC EDGAR ↗
30 Oct 202510-QBiogen reported Q3 2025 revenue of $2.53B (up 2.8% YoY) and net income of $466.5M (up 20.1% YoY), driven by Alzheimer's collaboration revenue growth and rare disease portfolio expansion.earningsopen

Figures in the filing · each found in the filing text

Total revenue · Q3-2025$2.53B+3% y/y
Product revenue, net · Q3-2025$1.85B+4% y/y
Revenue from anti-CD20 therapeutic programs · Q3-2025$494M+11% y/y
Alzheimer's collaboration revenue · Q3-2025$43M+130% y/y
Net income attributable to Biogen Inc. · Q3-2025$467M+20% y/y
Diluted earnings per share · Q3-2025$3.17+19% y/y
Operating cash flow · 9M-2025$1.69B-20% y/y

Risks flagged

MS franchise revenue decline

“Multiple Sclerosis product revenue declined 0.7% YoY (Q3: $1,061.5M vs $1,053.9M), with TECFIDERA down 27.7% and FAMPYRA terminated.”

Biosimilar revenue decline

“Biosimilar revenue declined 0.1% YoY (Q3: $196.8M vs $196.6M), with IMRALDI down 2.8% and BYOOVIZ down 12.5%.”

Contract manufacturing revenue decline

“Contract manufacturing revenue declined 36.2% YoY (Q3: $141.5M vs $221.9M).”
Read the original on SEC EDGAR ↗
30 Oct 20258-K · 2.02Total revenue $2.54B (+3% y/y); GAAP diluted EPS $3.17 (+19% y/y); Non-GAAP diluted EPS $4.81 (+18% y/y); Guidance: Non-GAAP EPS guidance raised to $14.50-$15.00; revenue growth guidance raised to flat to +1%earningsopen

Figures in the filing · each found in the filing text

Total revenue · Q3-2025$2.54B+3% y/y
GAAP diluted EPS · Q3-2025$3.17+19% y/y
Non-GAAP diluted EPS · Q3-2025$4.81+18% y/y
Multiple sclerosis product revenue · Multiple sclerosis · Q3-2025$1.06B+1% y/y
Rare disease revenue · Rare disease · Q3-2025$533M+8% y/y
Biosimilars revenue · Biosimilars · Q3-2025$197M0% y/y
LEQEMBI global in-market sales · Alzheimer's · Q3-2025$121M+82% y/y
SKYCLARYS global revenue · Rare disease · Q3-2025$133M+30% y/y
ZURZUVAE revenue · Postpartum depression · Q3-2025$55M

Guidance

Non-GAAP EPS guidance raised to $14.50-$15.00; revenue growth guidance raised to flat to +1%

Raised full-year guidance due to strong launch product momentum and MS franchise resilience

Risks flagged

GAAP cost of sales increased as % of revenue due to TYSABRI royalty charge; contract manufacturing revenue declined 35%

“GAAP cost of sales 27% of revenue vs 26% prior year; contract manufacturing revenue $151M vs $232M, down 35%”
Read the original on SEC EDGAR ↗

Biogen Inc. — questions

What did Biogen Inc. file recently?
20 SEC filings in the last 12 months. Latest: 8-K on 2026-07-29 — Biogen reports strong Q2 2026 results: total revenue $2.7B (+3% YoY), Growth Portfolio revenue $1.06B (+24% YoY). GAAP EPS $0.66, Non-GAAP EPS $3.60. Guidance updated reflecting strengthening underlying business performance.

Every figure on this page comes from Biogen Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.