# Airbnb — Capital Time Machine A historical bridge from preferred shares to an IPO. Offering price and cash you could actually receive are different things. Canonical citation: https://capitaltimemachine.com/private/airbnb Dataset revision: ctm-research-2026-10-01; evidence register reviewed: 2026-09-19. Each observation retains its own check date. Publisher: CapitalTimeMachine. Methodology: https://capitaltimemachine.com/methodology ## What this supports Five filing prices support approximate share-equivalent models. The split is already reflected. B, B-1, D, E and F use reviewed 1:1 mappings. Series C is excluded for its additional conversion adjustment; Seed and A are held back because their coarsely rounded low prices need further precision review. ## Limitations - Historical research and hypothetical arithmetic, not live quotes, investment advice or an offer to invest. - Company valuation changes are not shareholder returns. Financing, dilution, security rights and exit access matter. - IPO offer-price marks are not realized sale proceeds; minimum investments and access are not established. - User-entered prices and valuations are assumptions, not sourced observations. Fee and carry treatment is stated by each method; taxes and distributions are excluded. - Selected surviving companies are not representative of private-market outcomes; investments may lose all value. ## Sourced observations ### ABNB-B — Series B issuance price Value: 3.31 USD; scope: per_share_issuance_price Date: 2019-12-31; precision: day; role: historical_table_snapshot; actual investment date: not established Security: Series B preferred; share basis: retrospectively_split_restated Verification: primary_verified; checked: 2026-09-17 Rounded filing price; the December 2019 table date is not the purchase date. Preferred and listed shares differ in rights. Source: [SEC · Airbnb filing — 2020 Form 10-K](https://www.sec.gov/Archives/edgar/data/1559720/000155972021000010/airbnb-10k.htm) Source location: Note 12: December 31, 2019 preferred-stock table; Notes 2 and 12: split and conversion Citation: https://capitaltimemachine.com/private/airbnb#ABNB-B ### ABNB-B1 — Series B-1 issuance price Value: 1.11 USD; scope: per_share_issuance_price Date: 2019-12-31; precision: day; role: historical_table_snapshot; actual investment date: not established Security: Series B-1 preferred; share basis: retrospectively_split_restated Verification: primary_verified; checked: 2026-09-17 Rounded filing price; the December 2019 table date is not the purchase date. Preferred and listed shares differ in rights. Source: [SEC · Airbnb filing — 2020 Form 10-K](https://www.sec.gov/Archives/edgar/data/1559720/000155972021000010/airbnb-10k.htm) Source location: Note 12: December 31, 2019 preferred-stock table; Notes 2 and 12: split and conversion Citation: https://capitaltimemachine.com/private/airbnb#ABNB-B1 ### ABNB-D — Series D issuance price Value: 20.36 USD; scope: per_share_issuance_price Date: 2019-12-31; precision: day; role: historical_table_snapshot; actual investment date: not established Security: Series D preferred; share basis: retrospectively_split_restated Verification: primary_verified; checked: 2026-09-17 Rounded filing price. The table date is not the purchase date; no holding period is inferred. Source: [SEC · Airbnb filing — 2020 Form 10-K](https://www.sec.gov/Archives/edgar/data/1559720/000155972021000010/airbnb-10k.htm) Source location: Note 12: December 31, 2019 preferred-stock table; Notes 2 and 12: split and conversion Citation: https://capitaltimemachine.com/private/airbnb#ABNB-D ### ABNB-E — Series E issuance price Value: 46.55 USD; scope: per_share_issuance_price Date: 2019-12-31; precision: day; role: historical_table_snapshot; actual investment date: not established Security: Series E preferred; share basis: retrospectively_split_restated Verification: primary_verified; checked: 2026-09-17 Rounded filing price. The table date is not the purchase date; no holding period is inferred. Source: [SEC · Airbnb filing — 2020 Form 10-K](https://www.sec.gov/Archives/edgar/data/1559720/000155972021000010/airbnb-10k.htm) Source location: Note 12: December 31, 2019 preferred-stock table; Notes 2 and 12: split and conversion Citation: https://capitaltimemachine.com/private/airbnb#ABNB-E ### ABNB-F — Series F preferred Value: 52.50 USD; scope: per_share_issuance_price Date: 2019-12-31; precision: day; role: historical_table_snapshot; actual investment date: not established Security: Series F preferred; share basis: retrospectively_split_restated Verification: primary_verified; checked: 2026-09-16 Rounded filing price. The table date is not the purchase date; no holding period is inferred. Source: [SEC · Airbnb filing — 2020 Form 10-K](https://www.sec.gov/Archives/edgar/data/1559720/000155972021000010/airbnb-10k.htm) Source location: Note 12, table as of December 31 2019 Citation: https://capitaltimemachine.com/private/airbnb#ABNB-F ### ABNB-OFFER — IPO completed Value: 68.00 USD; scope: public_offer_price_per_share Date: 2020-12-14; precision: day; role: offering_completion; actual investment date: not established Security: Class A common; share basis: undefined Verification: primary_verified; checked: 2026-09-16 Class A offer price on completion of the IPO. It is not a market closing price or assumed sale proceeds. Source: [SEC · Airbnb filing — 2020 Form 10-K](https://www.sec.gov/Archives/edgar/data/1559720/000155972021000010/airbnb-10k.htm) Source location: Stock Split and Initial Public Offering notes Citation: https://capitaltimemachine.com/private/airbnb#ABNB-OFFER ## Calculation options { "early_stage_assumptions": null, "ipo_offer_models": [ { "id": "ABNB-B-IPO", "company": "airbnb", "start": "ABNB-B", "end": "ABNB-OFFER", "label": "Series B → IPO offer-price mark", "conversion_factor": "1", "split_adjustment": "already_reflected_do_not_apply_again", "reviewed_on": "2026-09-17", "basis_note": "The 2020 Form 10-K restates per-share amounts for the October 2020 split, describes initial 1:1 preferred-to-Class B conversion and identifies extra conversion shares for Series C. D/E/F models assume no holder-specific adjustment. Class B can convert 1:1 to Class A. Offering-price mark only; no sale assumed.", "source_url": "https://www.sec.gov/Archives/edgar/data/1559720/000155972021000010/airbnb-10k.htm", "source_locators": [ "Note 2: Stock Split; Initial Public Offering", "Note 12: preferred-stock table; Conversion Rights; Common Stock", "Risk Factors: lock-up and market standoff restrictions" ] }, { "id": "ABNB-B1-IPO", "company": "airbnb", "start": "ABNB-B1", "end": "ABNB-OFFER", "label": "Series B-1 → IPO offer-price mark", "conversion_factor": "1", "split_adjustment": "already_reflected_do_not_apply_again", "reviewed_on": "2026-09-17", "basis_note": "The 2020 Form 10-K restates per-share amounts for the October 2020 split, describes initial 1:1 preferred-to-Class B conversion and identifies extra conversion shares for Series C. D/E/F models assume no holder-specific adjustment. Class B can convert 1:1 to Class A. Offering-price mark only; no sale assumed.", "source_url": "https://www.sec.gov/Archives/edgar/data/1559720/000155972021000010/airbnb-10k.htm", "source_locators": [ "Note 2: Stock Split; Initial Public Offering", "Note 12: preferred-stock table; Conversion Rights; Common Stock", "Risk Factors: lock-up and market standoff restrictions" ] }, { "id": "ABNB-D-IPO", "company": "airbnb", "start": "ABNB-D", "end": "ABNB-OFFER", "label": "Series D → IPO offer-price mark", "conversion_factor": "1", "split_adjustment": "already_reflected_do_not_apply_again", "reviewed_on": "2026-09-17", "basis_note": "The 2020 Form 10-K restates per-share amounts for the October 2020 split, describes initial 1:1 preferred-to-Class B conversion and identifies extra conversion shares for Series C. D/E/F models assume no holder-specific adjustment. Class B can convert 1:1 to Class A. Offering-price mark only; no sale assumed.", "source_url": "https://www.sec.gov/Archives/edgar/data/1559720/000155972021000010/airbnb-10k.htm", "source_locators": [ "Note 2: Stock Split; Initial Public Offering", "Note 12: preferred-stock table; Conversion Rights; Common Stock", "Risk Factors: lock-up and market standoff restrictions" ] }, { "id": "ABNB-E-IPO", "company": "airbnb", "start": "ABNB-E", "end": "ABNB-OFFER", "label": "Series E → IPO offer-price mark", "conversion_factor": "1", "split_adjustment": "already_reflected_do_not_apply_again", "reviewed_on": "2026-09-17", "basis_note": "The 2020 Form 10-K restates per-share amounts for the October 2020 split, describes initial 1:1 preferred-to-Class B conversion and identifies extra conversion shares for Series C. D/E/F models assume no holder-specific adjustment. Class B can convert 1:1 to Class A. Offering-price mark only; no sale assumed.", "source_url": "https://www.sec.gov/Archives/edgar/data/1559720/000155972021000010/airbnb-10k.htm", "source_locators": [ "Note 2: Stock Split; Initial Public Offering", "Note 12: preferred-stock table; Conversion Rights; Common Stock", "Risk Factors: lock-up and market standoff restrictions" ] }, { "id": "ABNB-F-IPO", "company": "airbnb", "start": "ABNB-F", "end": "ABNB-OFFER", "label": "Series F → IPO offer-price mark", "conversion_factor": "1", "split_adjustment": "already_reflected_do_not_apply_again", "reviewed_on": "2026-09-17", "basis_note": "The 2020 Form 10-K restates per-share amounts for the October 2020 split, describes initial 1:1 preferred-to-Class B conversion and identifies extra conversion shares for Series C. D/E/F models assume no holder-specific adjustment. Class B can convert 1:1 to Class A. Offering-price mark only; no sale assumed.", "source_url": "https://www.sec.gov/Archives/edgar/data/1559720/000155972021000010/airbnb-10k.htm", "source_locators": [ "Note 2: Stock Split; Initial Public Offering", "Note 12: preferred-stock table; Conversion Rights; Common Stock", "Risk Factors: lock-up and market standoff restrictions" ] } ], "valuation_comparisons": [], "user_entered_private_prices": false, "entered_public_price_review": { "company": "airbnb", "ticker": "ABNB", "issuer_cik": "1559720", "model_ids": [ "ABNB-B-IPO", "ABNB-B1-IPO", "ABNB-D-IPO", "ABNB-E-IPO", "ABNB-F-IPO" ], "from_date": "2024-06-10", "through_date": "2026-09-19", "reviewed_on": "2026-09-19", "status": "reviewed_user_price_scenario", "historical_only": false, "limitation": "Entered price is unverified. Use the actual common-share price on its dated basis, not a dividend-adjusted or retrospectively split-adjusted history.", "listed_equivalent_factor": "1", "splits": [], "sources": [ { "url": "https://www.sec.gov/Archives/edgar/data/1559720/000155972021000010/airbnb-10k.htm", "title": "Original IPO share basis", "locator": "Prospectus / offering and capital-stock terms; the existing private-to-IPO model supplies the entry conversion." }, { "url": "https://www.sec.gov/Archives/edgar/data/1559720/000155972026000027/abnb-20260630.htm", "title": "Issuer 10-Q · 2026-08-06", "locator": "Common-stock presentation and corporate-action screening. A missing split keyword alone is not evidence of a complete history." }, { "url": "https://www.stocksplithistory.com/?symbol=ABNB", "title": "Supplemental split-history screen", "locator": "Dated post-IPO corporate actions only. Ticker reuse can introduce unrelated pre-IPO events; those are excluded. No market quote was copied." } ], "review_note": "Entry-to-IPO conversion reuses the approved company-specific model. The post-IPO corporate-action screen matches the issuer CIK and excludes reused ticker history predating its IPO. This is a bounded price-only scenario, not a licensed quote or a certified corporate-action feed." }, "public_ipo": null } ## Reuse and corrections Link to the company page and original evidence, retain dates, units and limitations. Third-party source terms remain applicable; no new license to third-party material is granted. https://capitaltimemachine.com/terms Corrections: mailto:capitaltimemachine@gmail.com