Cisco’s AI orders converted. Mix is the next test.

Figures below were re-pulled in Aether from Cisco’s Form 10-K filed 2 September 2026 (accession 0000858877-26-000132, period ended 25 July 2026) and the Form 8-K Exhibit 99.1 furnished 12 August 2026 (accession 0000858877-26-000106). The Q3 raise path is from Exhibit 99.1 accessions 0000858877-26-000075, 0000858877-26-000006, and 0001193125-25-277624. The Silicon One / memory supply path is from the Q2 and Q3 FY2026 10-Qs (accessions 0000858877-26-000021 and 0000858877-26-000078). Research, not investment advice.

If you only read Cisco’s August print as another AI beat, the conversion question from June looks closed. It is not.

The June CSCO thesis asked whether hyperscaler AI-infrastructure orders would show up as revenue. Readers who stay on the 10-K mix line, not the headline, can see the answer and the cost. This is not a sold-the-news recap, and it is not a price call. If you want either, this is the wrong page.

The FY2026 Form 10-K (accession 0000858877-26-000132) is the conversion proof: AI infrastructure demand from hyperscaler customers represented approximately 6% of total revenue in fiscal 2026, compared with less than 2% in fiscal 2025. The furnished 12 August Exhibit 99.1 is the order-and-guide print beside it. Open Item 7 and the inventory table next — not the press summary.

What June left open

The June note treated Cisco ($CSCO) as a filing-confirmed AI data-center connectivity company — Silicon One, high-density routers and switches, routed optical systems, pluggable optics — and used the Q3 FY2026 earnings exhibit as the demand signal. That exhibit (accession 0000858877-26-000075, 13 May 2026) said AI-infrastructure orders from hyperscalers were $5.3 billion year to date, and Cisco raised expected FY2026 AI-infrastructure orders to $9 billion from $5 billion and expected FY2026 AI-infrastructure revenue to $4 billion from $3 billion. Those figures were company-reported in a furnished exhibit, not an audited AI-infrastructure segment.

The order path into that raise is in Aether. Q1 FY2026 Exhibit 99.1 (accession 0001193125-25-277624) printed $1.3 billion of AI-infrastructure orders from hyperscalers. Q2 (accession 0000858877-26-000006) printed $2.1 billion. FY2025 Exhibit 99.1 (accession 0001193125-25-179820) had said FY2025 webscale AI-infrastructure orders were over $2 billion, more than double the original $1 billion target. June’s open question was conversion: would the raised $9 billion / $4 billion show up in the year-end print, and in the 10-K mix language.

Conversion: 10-K mix plus the August exhibit

Item 7 of the FY2026 10-K is the mix cite to use, not the prior-year 10-K. Cisco wrote that it saw demand in fiscal 2026 for AI infrastructure from its hyperscaler customers, “which represented approximately 6% of total revenue in fiscal 2026 compared with less than 2% in fiscal 2025.” It expects that demand to remain a significant driver in fiscal 2027, and points readers to Item 1A for customer-concentration and supply considerations.

Same Item 7: total revenue was $63.3 billion, up 12% from $56.7 billion. Product revenue increased 16%; services were flat. The product increase was driven by Networking, up 22%, “particularly within our AI Infrastructure and Campus Networking solutions,” with Collaboration up 4%, Observability up 4%, and Security up 2%. Note 18 of the same 10-K puts FY2026 Networking product revenue at $34,668 million versus $28,304 million.

The 12 August Exhibit 99.1 (accession 0000858877-26-000106) is furnished. It is the print that closes June’s order/revenue raise:

• $4 billion of AI-infrastructure orders taken in Q4, bringing the FY2026 total to $9.3 billion.
• Approximately $4 billion of AI-infrastructure revenue delivered in FY2026; $7.5 billion expected in FY2027.
• Q4 total product orders up 35% year over year, up 25% excluding hyperscalers; networking product orders up 40% in Q4, the eighth consecutive quarter of double-digit growth.
• Q4 revenue $17.3 billion, up 18%, with product up 24% and services flat. The exhibit table “REVENUE FOR GROUPS OF SIMILAR PRODUCTS AND SERVICES” prints Q4 Networking at $9,791 million, up 28%; FY Networking $34,668 million, up 22% (same FY figure as 10-K Note 18).

The 10-K “approximately 6%” share and the exhibit’s “approximately $4 billion” of FY2026 AI-infrastructure revenue sit next to each other. A reconciling third figure is not filed. The 10-K line is the mix share; the exhibit line is management-reported AI-infrastructure revenue. Keep that AI-infrastructure order book separate from remaining performance obligations. RPO is a different Cisco line.

Remaining performance obligations in the 10-K (millions): $46,734 versus $43,533 a year earlier, up 7%. Product RPO $23,436 versus $21,572 (up 9%); services $23,298 versus $21,961 (up 6%). Short-term $22,776; long-term $23,958. Deferred revenue $29,781 versus $28,779, up 3%. The same RPO print appears in Exhibit 99.1 as $46.7 billion, up 7%.

Mix was the cost of conversion

Item 7: total gross margin decreased 0.4 percentage points (64.5% versus 64.9%). Product gross margin decreased 0.5 percentage points, “primarily driven by negative impacts from product mix and higher memory costs,” partially offset by productivity, pricing, lower amortization of purchased intangibles, and a fiscal-2025 supplier-dispute charge that did not recur. The product-gross-margin bridge lists mix of products sold at (3.6)%; the filing says the negative mix was primarily due to higher Networking revenue. Productivity benefits were “adversely impacted by higher memory costs.” Fiscal 2026 product gross margin in that bridge is 63.2%.

Exhibit 99.1, Q4 only, company-reported: GAAP total / product / services gross margin 64.1% / 62.6% / 69.4%, versus 63.2% / 61.5% / 68.3% a year earlier. Non-GAAP total / product / services gross margin 66.3% / 64.8% / 71.6%, versus 68.4% / 67.5% / 70.8%. GAAP operating margin 24.7%; non-GAAP 35.9%. GAAP EPS $0.97, up 52%; non-GAAP $1.22, up 23%. FY2026 GAAP EPS $3.33; non-GAAP $4.33. Q4 operating cash flow $5.4 billion, up 27% from $4.2 billion; FY2026 operating cash flow $14.2 billion, flat versus fiscal 2025.

Q4 restructuring and other charges were $511 million versus $35 million a year earlier (10-K Item 7 snapshot and Exhibit 99.1 income statement). Full-year restructuring and other charges were $693 million versus $744 million.

Q1 FY2027 company guide in Exhibit 99.1: revenue $18.0 billion to $18.2 billion; non-GAAP gross margin 65% to 66%; non-GAAP operating margin 35.5% to 36.5%; non-GAAP EPS $1.32 to $1.34; GAAP EPS $1.08 to $1.10. Full-year FY2027 guide: revenue $72.2 billion to $73.4 billion; GAAP EPS $4.00 to $4.06; non-GAAP $5.05 to $5.11. That is guide in a furnished exhibit, not a 10-Q.

Working capital moved with Silicon One — and memory

The June thesis already flagged inventory and purchase-commitment growth around Cisco Silicon One. The Q2 and Q3 10-Qs, then the year-end 10-K, make the path explicit. That is a Cisco supply-commitment story. It is not a filed Cisco–NVIDIA customer link.

Q2 FY2026 10-Q (accession 0000858877-26-000021, period ended 24 January 2026): inventories $3,920 million versus $3,164 million at fiscal 2025 year-end; inventory purchase commitments $10,055 million versus $7,599 million. Combined increase 30%, “primarily related to commitments with contract manufacturers and suppliers related to manufacturing Cisco Silicon One and other products, and helping to secure memory, to meet the demand from hyperscalers and other customers.” The same Item 2 says Cisco increased purchase commitments with suppliers in Q2 “to help secure memory.”

Q3 FY2026 10-Q (accession 0000858877-26-000078, period ended 25 April 2026): inventories $4,708 million versus $3,164 million (+49%); inventory purchase commitments $16,033 million versus $7,599 million (+111%). Combined increase 93%, still tied to Silicon One and other products for hyperscaler and other-customer demand. Item 1A of that 10-Q names memory as a cost that hit the first nine months of fiscal 2026.

Year-end 10-K: inventories $5,694 million at 25 July 2026 versus $3,164 million at 26 July 2025 (Item 8). Purchase commitments with contract manufacturers and suppliers $17,165 million, of which $14,341 million was due in less than one year (Item 7 contractual obligations).

Item 1A of the 10-K: in fiscal 2025 and 2026 Cisco entered into additional purchase commitments related to manufacturing Cisco Silicon One, memory components, and other products to meet expected demand from hyperscalers and other customers, and expects to continue those commitments in fiscal 2027, including deposits and prepayments. The filing says those arrangements “significantly increased our supply chain exposure,” already contributed to negative product-gross-margin impacts, and include potential excess-and-obsolete inventory, losses on purchase commitments, and recoverability risk if hyperscalers change orders, buying patterns, architecture, design specifications, or qualification requirements with limited notice. Note 2 (inventories) adds that a significant portion of inventory, together with those component purchase commitments, supports products sold to hyperscalers and other large customers, and that component lead times frequently exceed the notice period for order changes.

Same Item 1A, on service-provider and cloud customers: sales activity depends on network-architecture, silicon, and optics choices and on funding; a limited number of customers can have a greater impact on revenue and gross margins from period to period; weakness in orders from that industry, or changes in expectations for future AI-infrastructure demand, can reduce, delay, or change investment plans. Those customers “may require customized products or significant commitments of supply or capacity.” That is concentration language, not a named customer.

That is the conversion caveat. Orders became revenue. The 10-Qs and 10-K also show more inventory, more Silicon One and memory commitments, and a product-mix hit inside Networking.

The connectivity stack in the new 10-K

Item 1 of the same FY2026 10-K keeps the June connectivity frame, in current language: the rise of AI agents is “generating a huge increase in network traffic and driving the need for far greater network connectivity.” Cisco provides network infrastructure to power AI training and inference workloads for both hyperscalers and enterprises; high-density routers and switches; high-performance optics; AI-ready data centers “predominantly powered by Cisco Silicon One.” Acacia Optics is described as high-speed coherent optical interconnect technology that supports the shift from chassis-based systems to pluggable coherent optics. Campus Smart Switches (Cisco 9350, 9610, and 9550) are built on Silicon One. Cisco 800G optics are described as designed for high-density switch ports and AI workloads. Service-provider routing includes AI Infrastructure solutions for service-provider customers, including hyperscalers. Item 1A still lists silicon (Cisco Silicon One) and optics, including for AI infrastructure, as strategic investments that can prove of limited value if the networking model does not emerge as Cisco expects.

None of that names a hyperscaler customer. The conversion evidence is the 6% mix line and the exhibit order/revenue figures, not a new customer logo.

Open question

June asked whether the Q3 raise ($9 billion orders / $4 billion revenue) would print. It did: $9.3 billion of FY2026 AI-infrastructure orders and approximately $4 billion of FY2026 AI-infrastructure revenue in Exhibit 99.1, and approximately 6% of FY2026 revenue in the 10-K versus less than 2% a year earlier.

The next filing question is conversion quality into FY2027. Exhibit 99.1 says $7.5 billion of AI-infrastructure revenue is expected in FY2027. The 10-K says hyperscaler AI-infrastructure demand should remain a significant driver, and it also says mix, memory costs, and Silicon One / hyperscaler supply commitments already moved product gross margin and working capital. Watch whether that 6% mix share, product gross margin, inventories, and purchase commitments still hang together when the first FY2027 10-Q lands — not whether the August print “beat.”

You can park that as a Thesis Monitor check: FY2027 AI-infrastructure revenue expected at $7.5 billion, against mix and supply-commitment language already in the FY2026 10-K.

Cisco 10-K: accession 0000858877-26-000132 (sec.gov). Exhibit 99.1: accession 0000858877-26-000106 (sec.gov). Q3 raise: accession 0000858877-26-000075. Q2 10-Q: accession 0000858877-26-000021. Q3 10-Q: accession 0000858877-26-000078. Research, not investment advice.