{"concept_id":"ALTSS-VC-004","slug":"series-a","canonical_name":"Series A","aliases":["series A round","series A funding"],"kind":"term","authority":"industry","facets":["STG"],"domains":["VENTURE"],"display_title":"Series A","search_aliases":["what is series a funding","series a round meaning","series a vs seed","series a preferred stock terms","what happens to safes at series a"],"one_sentence_definition":"Series A is conventionally a startup's first major priced round: it sells a new class of convertible preferred stock at a negotiated price per share, usually led by a venture firm, to scale a product that has found product-market fit.","plain_english":"By Series A a company is expected to show that customers want its product and that growth can be repeated. A lead investor sets the price and terms, and the company issues a new class of preferred shares named after the round. Any simple agreements for future equity or convertible notes from earlier rounds normally convert at this point.","parent_concepts":["venture-capital"],"child_concepts":[],"related_concepts":["seed-round","series-b","priced-round","term-sheet","preferred-stock","option-pool","lead-investor","liquidation-preference","anti-dilution"],"comparison_concepts":[],"not_the_same_as":[{"slug":"seed-round","distinction":"A seed round tries to produce evidence of product-market fit and is often unpriced; Series A is normally priced on that evidence."},{"slug":"priced-round","distinction":"Series A is one priced round; \"priced round\" is the general term for any round that sets a price per share."}],"formula_ids":[],"worked_examples":[],"sections":[{"heading":"What Series A investors look for","paragraphs":["Series A is priced on evidence of product-market fit and on a credible plan to scale it. Typical evidence includes revenue or usage growth, retention by customer cohort, early signs that sales and marketing spending produces new customers at a sustainable cost, and a team that can build the go-to-market organisation. In software companies, operating metrics such as [ARR](/glossary/annual-recurring-revenue) and net revenue retention are often central; in other sectors the milestones differ (clinical, regulatory, technical)."]},{"heading":"Mechanics of the round","paragraphs":["A [lead investor](/glossary/lead-investor) issues a [term sheet](/glossary/term-sheet) setting the pre-money valuation, the size of the round and the rights of the new preferred stock. The price per share equals the pre-money valuation divided by the pre-money fully diluted share count, which commonly includes an enlarged [option pool](/glossary/option-pool) (the option pool shuffle). Outstanding [SAFEs](/glossary/safe-simple-agreement-for-future-equity) and [convertible notes](/glossary/convertible-note) convert, usually into a shadow series of Series A preferred priced at their conversion price. In the US the definitive documents commonly follow the National Venture Capital Association (NVCA) model forms: amended certificate of incorporation, stock purchase agreement, investors' rights agreement, voting agreement, and right of first refusal and co-sale agreement."]},{"heading":"Terms that typically appear","paragraphs":["Series A preferred normally carries a [liquidation preference](/glossary/liquidation-preference) (1x non-participating is the common baseline in US practice), conversion rights, broad-based weighted-average [anti-dilution protection](/glossary/anti-dilution), protective provisions, information and [pro rata rights](/glossary/pro-rata-rights) for major investors, a right of first refusal and co-sale on founder shares, and a drag-along. The lead usually takes a board seat, and board composition is renegotiated."]},{"heading":"Naming conventions","paragraphs":["\"Series A\" is the name of the share class as well as the round. Extensions sold later on the same or similar terms are often designated Series A-1 or A-2; a rescue or repriced round may also take a sub-series name. Some companies label an early priced round \"Series Seed\" and their first large round \"Series A\"; others skip names. The label does not define the size or the terms of the round."]},{"heading":"Why the Series A matters to fund investors","paragraphs":["For a seed fund, the Series A is usually the first independent price on its investment, so it drives the first significant change in the holding's [fair value](/glossary/fair-value) and the fund's interim performance. It is also the round where earlier investors decide whether to use [follow-on reserves](/glossary/follow-on-reserves) to keep their ownership. For Series A funds, entry price, ownership and the share of companies that go on to raise a [Series B](/glossary/series-b) are the core diligence questions."]}],"classification_rules":[],"calculation_rules":[],"common_mistakes":["Assuming a company that has raised a Series A has been de-risked. Many do not raise a Series B.","Comparing pre-money valuations without checking whether the option pool increase and converting SAFEs are inside the pre-money share count.","Ignoring the shadow series: SAFE and note holders usually receive preferred stock with a liquidation preference based on their own conversion price, not the Series A price."],"edge_cases":[],"external_standard_mappings":[],"source_ids":["SRC-NVCA-MODEL-DOCS","SRC-YC-SAFE"],"citations":[{"source_id":"SRC-NVCA-MODEL-DOCS","pinpoint":"Certificate of Incorporation; Stock Purchase Agreement; Investors' Rights Agreement; Voting Agreement; ROFR and Co-Sale Agreement","supports":"Standard US Series A document set and the rights it typically contains","source":{"source_id":"SRC-NVCA-MODEL-DOCS","title":"NVCA Model Legal Documents","authors":"National Venture Capital Association","publisher":"NVCA","document_type":"template","url":"https://nvca.org/model-legal-documents/","year":2026,"publication_date":"Certificate of Incorporation, Stock Purchase Agreement, Investors' Rights Agreement updated October 2025; Voting Agreement June 2026; ROFR and Co-Sale April 2026; Management Rights Letter and Indemnification Agreement July 2020","jurisdiction":"US","status":"Current","last_verified":"2026-10-01"}},{"source_id":"SRC-YC-SAFE","pinpoint":"Post-Money SAFE User Guide, Q&A B.1-B.2 (Safe Preferred Stock; round priced above the cap)","supports":"SAFE conversion at the priced round, including the shadow (Safe Preferred) series with a per-share liquidation amount based on the SAFE price","source":{"source_id":"SRC-YC-SAFE","title":"Y Combinator SAFE (post-money) documents and SAFE User Guide","authors":"Y Combinator","publisher":"Y Combinator","document_type":"template","url":"https://www.ycombinator.com/documents","year":2018,"publication_date":"Post-money SAFE introduced 2018","jurisdiction":"US","status":"Current","last_verified":"2026-10-01"}}],"faq":[{"q":"What happens to SAFEs at a Series A?","a":"They convert into preferred stock at the lower of the cap price and any discounted round price, as set out in each SAFE. Where the cap sets the conversion price, a post-money SAFE holder's ownership before the new money is its purchase amount divided by the cap."},{"q":"Does the Series A lead always take a board seat?","a":"Usually, but it is negotiated. The composition of the board after the round is set in the voting agreement and the charter."}],"seo":{},"first_published":"2026-01-04","last_reviewed":"2026-10-01","last_modified":"2026-10-01","content_version":"2.0.0","url":"https://altss.com/glossary/series-a","json_url":"https://altss.com/reference/concepts/series-a.json","title":"Series A","formulas":[],"sources":[{"source_id":"SRC-NVCA-MODEL-DOCS","title":"NVCA Model Legal Documents","authors":"National Venture Capital Association","publisher":"NVCA","document_type":"template","url":"https://nvca.org/model-legal-documents/","year":2026,"publication_date":"Certificate of Incorporation, Stock Purchase Agreement, Investors' Rights Agreement updated October 2025; Voting Agreement June 2026; ROFR and Co-Sale April 2026; Management Rights Letter and Indemnification Agreement July 2020","jurisdiction":"US","status":"Current","last_verified":"2026-10-01"},{"source_id":"SRC-YC-SAFE","title":"Y Combinator SAFE (post-money) documents and SAFE User Guide","authors":"Y Combinator","publisher":"Y Combinator","document_type":"template","url":"https://www.ycombinator.com/documents","year":2018,"publication_date":"Post-money SAFE introduced 2018","jurisdiction":"US","status":"Current","last_verified":"2026-10-01"}]}