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Kilroy Realty (KRC): Tenant Roster and Contracting Profile — What Investors Need to Know

Kilroy Realty monetizes a focused portfolio of premier office and life‑science properties by leasing long‑term space to large and very large enterprises, capturing stable rental cash flow, incremental revenue from development projects, and predictable contractual escalations. The company’s top‑20 tenant table and recent leasing disclosures show concentration in technology, media and life‑science occupiers, long lease terms that push expirations into the 2030s and beyond, and active leasing in key West Coast and Seattle micro‑markets. For investors evaluating KRC’s customer relationships, the relevant signals are stability of cash flows, tenant credit quality, geographic concentration, and development‑to‑rent conversion timing.
Visit https://nullexposure.com/ for the full coverage and relational intelligence on KRC.

How Kilroy’s tenant relationships shape the business model

Kilroy’s operating model is built around a small set of high‑quality, long‑dated leases in specialized coastal markets. Company‑level signals extracted from filings and calls show:

  • Long‑term contracting posture. Kilroy discloses operating leases that expire through 2050 and routine annual escalations; this underpins predictable cash flow and inflation linkage. (Company signal from FY2025 10‑K.)
  • Large enterprise counterparty mix. The tenant roster is heavily weighted to leading technology, media and life‑science firms, reinforcing credit quality but increasing sector concentration risk. (Company signal from FY2025 10‑K marketing language.)
  • North America geography concentration. Portfolio and development activity are concentrated in California, Washington and Austin, Texas, focusing exposure on a few high‑value markets. (Company signal from FY2025 10‑K.)
  • Materiality and role. Rental revenue is the principal revenue source; Kilroy acts as landlord and property operator while also developing first‑generation product for tenants. (Company signal from FY2025 10‑K.)
  • Active leasing and development pipeline. Recent quarters show significant new leases and full‑building life‑science transactions converting development inventory to stabilized cash flow. (Company signal from FY2025 earnings calls.)

These characteristics create highly predictable base rent but also concentration risks tied to a small cohort of major tenants and local market cycles.

Tenant roll call — what Kilroy discloses (filed sources and calls)

Below are plain‑English summaries for every tenant relationship referenced in Kilroy’s public filings and calls in our source set.

Adobe Systems, Inc.

Kilroy lists Adobe among its FY2025 top 20 tenants with activity in the San Francisco Bay Area and Seattle, reflecting Adobe’s footprint in Kilroy’s coastal portfolio. Source: Kilroy FY2025 Form 10‑K (top 20 tenants table).

Okta, Inc.

Okta is recorded in the FY2025 top‑20 tenant table with operations in the San Francisco Bay Area, indicating a standard enterprise lease relationship. Source: Kilroy FY2025 Form 10‑K.

Salesforce, Inc.

Salesforce appears on Kilroy’s FY2025 top‑20 list with presence in the Bay Area and Seattle, representing another large enterprise lease underpinning annualized base rent. Source: Kilroy FY2025 Form 10‑K.

Splunk, Inc.

Splunk is included in the FY2025 top‑20 tenants focused in the Bay Area, contributing to the technology tenant mix in Kilroy’s stabilized portfolio. Source: Kilroy FY2025 Form 10‑K.

Stripe, Inc.

Stripe sits in the FY2025 top‑20 tenant roster and is identified with a Bay Area presence, accounting for a material slice of annualized base rental revenue. Source: Kilroy FY2025 Form 10‑K.

Synopsys, Inc.

Synopsys is listed among Kilroy’s top tenants for FY2025 with Bay Area operations, reinforcing the cluster of semiconductor and software occupiers. Source: Kilroy FY2025 Form 10‑K.

Tandem Diabetes Care, Inc.

Tandem Diabetes appears in the FY2025 top‑20 tenant list with San Diego exposure, reflecting Kilroy’s life‑science and medtech tenancy in Southern California. Source: Kilroy FY2025 Form 10‑K.

Viacom International, Inc.

Viacom is recorded as a Los Angeles tenant in Kilroy’s FY2025 top‑20, signaling media sector exposure within the L.A. portfolio. Source: Kilroy FY2025 Form 10‑K.

Fitler Club

Kilroy disclosed a new 93,000 square‑foot lease with the Fitler Club in Hollywood during its Q4 2025 earnings call, representing a notable single‑lease contribution to that submarket. Source: KRC Q4 2025 earnings call.

University of California, San Francisco (UCSF)

Kilroy announced a full‑building, 280,000 square‑foot lease with UCSF at Kilroy Oyster Point Phase 2 during Q4 2025 — a transformational life‑science commitment that materially advances stabilization of that development. Source: KRC Q4 2025 earnings call.

Box, Inc.

Box appears in the FY2025 top‑20 tenant table with Bay Area operations and is counted toward Kilroy’s annualized base rents. Source: Kilroy FY2025 Form 10‑K.

Cruise LLC

Cruise is listed among the top tenants in FY2025 documentation and is repeatedly referenced in news summarizing Kilroy’s top 20 contributors to base rental revenue. Source: Kilroy FY2025 Form 10‑K; TradingView summary referencing Kilroy filings.

Cytokinetics, Inc.

Cytokinetics shows up in the FY2025 top‑20 list with Bay Area presence, representing life‑science tenancy in Kilroy’s portfolio. Source: Kilroy FY2025 Form 10‑K.

DIRECTV, LLC

DIRECTV is a Los Angeles tenant in Kilroy’s FY2025 top‑20 table, contributing to metro L.A. office cash flows. Source: Kilroy FY2025 Form 10‑K.

DoorDash, Inc.

DoorDash is recorded in the FY2025 top‑20 tenant list with Bay Area exposure, reinforcing Kilroy’s concentration in high‑growth tech occupiers. Source: Kilroy FY2025 Form 10‑K.

Indeed, Inc.

Indeed is listed as an Austin CBD tenant in Kilroy’s FY2025 top‑20 table, illustrating the company’s limited but strategic non‑California exposure. Source: Kilroy FY2025 Form 10‑K.

Nektar Therapeutics, Inc.

Nektar is included among Kilroy’s FY2025 top‑20 tenants in the Bay Area, contributing to the life‑science rental base. Source: Kilroy FY2025 Form 10‑K.

Netflix, Inc.

Netflix appears in the FY2025 top‑20 roster as a Los Angeles tenant, part of the media cluster within Kilroy’s L.A. holdings. Source: Kilroy FY2025 Form 10‑K.

Neurocrine Biosciences, Inc.

Neurocrine is listed in the FY2025 top‑20 tenant table with San Diego operations, supporting the regional life‑science cash flow profile. Source: Kilroy FY2025 Form 10‑K.

Sony Group Corporation

Sony is included in Kilroy’s FY2025 top‑20 tenants with Bay Area and Los Angeles presence, counted among the company’s large enterprise occupiers. Source: Kilroy FY2025 Form 10‑K.

Unlearn

JLL press coverage noted that JLL represented Unlearn and Kilroy in a lease transaction in San Francisco in early 2026, confirming third‑party brokerage involvement in Kilroy leasing. Source: JLL press referenced in March 2026 coverage.

NVIDIA

Kilroy disclosed a new 28,000 square‑foot lease with NVIDIA in South Lake Union during an earlier earnings call, adding an anchor tech tenant in Seattle. Source: KRC Q3 2024 earnings call.

SAP

Kilroy referenced a 118,000 square‑foot SAP renewal in Bellevue during its Q3 2024 earnings commentary, representing a large renewal in the Seattle market. Source: KRC Q3 2024 earnings call.

Apple Inc.

Media reporting in March 2026 documented Apple signing a lease at 333 Dexter, a large South Lake Union development built by Kilroy, highlighting a marquee tenant commitment. Source: March 2026 news report (Hindustan Times coverage of the lease).

Amazon.com

Amazon is recorded in Kilroy’s FY2025 top‑20 tenant table with Seattle exposure, contributing to the company’s Pacific Northwest cash flow base. Source: Kilroy FY2025 Form 10‑K.

Riot Games

Kilroy announced a 79,000 square‑foot renewal with Riot Games for the Arena building in West Los Angeles during Q4 2025, providing multi‑year cash flow as the site’s highest‑and‑best use is evaluated. Source: KRC Q4 2025 earnings call.

Explore the full relational map and detailed tenant concentration analytics at https://nullexposure.com/.

Investment implications — concentration, cash flow durability, and execution risks

Kilroy’s tenant roster validates the thesis of stable, long‑dated cash flows driven by large enterprise and life‑science tenants, with development conversions such as Kilroy Oyster Point Phase 2 materially improving near‑term leased occupancy and cash generation. Key investment drivers are leasing velocity on new developments, renewal economics on large contracts, and rent escalation terms embedded in long‑term leases.

Risks for investors are concentrated and explicit: geographic concentration in a few West Coast markets, sector concentration in technology/media/life‑sciences, and reliance on a relatively small set of large tenants for a meaningful portion of annualized base rent. Kilroy’s long‑term contracting posture reduces short‑term cash flow volatility but amplifies the impact of any single large tenant departure in a localized market.

For a deeper tenant‑level assessment and rolling updates on leases and expirations, visit https://nullexposure.com/ to see the primary source references and relational scoring.

Final takeaway: Kilroy is a development‑to‑operator REIT whose present value is driven by execution on a concentrated set of long‑term enterprise leases and successful conversion of life‑science development to stabilized income. Investors should weight durable rent streams against market concentration and monitor leasing cadence in 2026.