Confidence legend: ✓ verified-primary (SEC 13D / 13G/A filings, IPO F-1 prospectus, GF press releases) · ◐ partial / aggregator · ⚠ inferred / estimate.
This page is the canonical reference for any thesis claim about GlobalFoundries’s controlling-shareholder architecture. Mubadala Investment Company (the Abu Dhabi sovereign wealth fund) and its affiliates collectively control approximately 77.05% of GFS ordinary shares outstanding as of the most recent Schedule 13G/A amendment. This is structurally the single most important fact about GFS as an investable security — it shapes:
- Governance (controlled-company exemption under Nasdaq Rule 5615; multiple Mubadala-affiliated directors).
- Capital structure (every secondary offering involves Mubadala selling down; the public float grows over time).
- Strategic posture (long-term, sovereign-wealth-fund time horizon; differentiated-specialty-foundry strategy aligns with UAE national-tech-sovereignty objectives).
- Liquidity (current public float ~23% of outstanding; relatively concentrated trading dynamics).
1. Mubadala-Affiliated Reporting Entities
The most recent Schedule 13G/A (amendment) filed jointly by the Mubadala-affiliated entities lists the following reporting persons sharing beneficial ownership of GFS ordinary shares: ✓ Schedule 13G/A — Mubadala et al. (March 2026)
| Reporting entity | Role |
|---|---|
| Mubadala Investment Company PJSC | Top-of-stack sovereign-wealth-fund parent (Abu Dhabi, UAE) |
| Mamoura Diversified Global Holding PJSC | Mubadala’s intermediate diversified-investments holding company |
| Mubadala Technology Investments LLC | Tech-investment intermediate holding |
| Mubadala Technology Investment Company | The direct seller-of-record in the May 2024 + March 2026 GFS secondary offerings |
| MTI International Investment Company LLC | Cayman / international-vehicle level intermediate |
The reporting on Schedule 13G/A as a passive-investment disclosure (not Schedule 13D as an active-control disclosure) reflects the post-IPO posture under the Mubadala framework: Mubadala is a strategic long-term controlling shareholder that exercises governance control through directors but does not file as an active-control acquirer.
The original Schedule 13D filing dates to the IPO closing (2021-04-26 accession: SC 13D filed by Mubadala Investment Company PJSC — ✓ SEC EDGAR — Mubadala SC 13D 2021-04-26 — primary-source detail to be re-extracted in next refresh).
2. Beneficial Ownership History
| Date / event | Mubadala stake | Source |
|---|---|---|
| 2021-11-01 (IPO close) | ~89% (post-primary issuance + Mubadala secondary block) | ⚠ post-IPO percentage requires Schedule 13D cross-check |
| 2024-04-30 (pre-May 2024 secondary) | ~85% | ◐ Tom’s Hardware — Mubadala to keep control |
| 2024-05 (post-May 2024 secondary) | ~81.6% | ◐ AGBI — Mubadala trims stake (May 2024 sale: ~$950M raised) |
| 2025 (year-end approximate) | ~80% | ⚠ inferred — confirm in 13G/A trail and 20-F Item 7.A |
| 2026-03-13 (post-March 2026 secondary + GF buyback) | 77.05% = 423,042,773 shares of 549,072,416 outstanding | ✓ Schedule 13G/A March 2026 |
The trajectory is a steady ~3-percentage-point sell-down per major secondary event, suggesting the controlling-shareholder transition is structured as a multi-year dribble rather than an exit. At the current cadence (one secondary every ~22 months), Mubadala falls below 50% sometime around 2034–2036 — many years out, and contingent on continued investor appetite for the secondary blocks at acceptable pricing. The controlled-company exemption therefore remains relevant for the medium-term investment horizon.
3. Secondary-Offering Precedents
May 2024 — first post-IPO secondary
- Seller: Mubadala Technology Investment Company.
- Size: ~$950M raised (gross). ◐ Zawya — Mubadala unit to raise $950M
- Mechanic: Underwritten secondary; standard 30-day lock-up on directors / officers post-pricing; Mubadala-side lock-up presumably tied to the registration-rights agreement.
- Stake transition: ~85% → ~81.6%.
- Concurrent buyback: ⚠ confirm whether GFS executed a concurrent share repurchase (the March 2026 transaction included one — see below — but the May 2024 transaction structure may have been simpler).
March 2026 — second post-IPO secondary
- Underwriting agreement: 2026-03-11. Lead underwriters: J.P. Morgan, Morgan Stanley.
- Closing: 2026-03-13. ◐ TipRanks — Closes Mubadala Secondary + $300M Buyback
- Total shares offered: 27,344,840 ordinary shares.
- 20,000,000 shares sold to public at $42.00/share = $840M gross to Mubadala.
- 7,344,840 shares simultaneously repurchased by GF from underwriters at $40.845/share = ~$300M aggregate.
- GF buyback authorization: $500M repurchase program approved by board February 2026; the $300M buyback was executed under this authorization.
- Underwriter overallotment: 30-day option for up to additional 3,000,000 shares.
- Stake transition: ~80% → 77.05%.
The structure is interesting from a governance perspective: GF used corporate cash to buy shares from Mubadala, which is a related-party transaction. The buyback at $40.845 (vs the public-offering price of $42.00) reflects standard underwriting-discount mechanics. Net effect: Mubadala monetizes ~$1.14B (selling 27.3M shares); the public float increases by 20M shares; GF reduces share count by 7.3M shares (immediately accretive to EPS and to per-share metrics).
For the public minority, a portion of corporate FCF is being deployed to facilitate the controlling-shareholder sell-down — a substantively different use of capital than reinvestment in the Fotonix capacity build-out. This is a recurrent feature of post-IPO sponsor-controlled issuers and is worth flagging on each future secondary.
4. Registration-Rights & Lock-Up Architecture
IPO-era Registration Rights Agreement
At the October 2021 IPO close, GF and the Mubadala-affiliated holders entered into a Registration Rights Agreement (RRA) granting Mubadala:
- Demand registration rights — ability to require GF to register Mubadala’s remaining shares for sale on demand (typically with a minimum-size threshold and a per-12-month frequency cap).
- Piggyback registration rights — ability to participate in any GF-initiated primary or other-shareholder secondary offering.
- Indemnification provisions — standard reciprocal indemnification between GF and Mubadala for offering-related liabilities.
⚠ The exact RRA terms (demand-frequency cap, minimum-size threshold, expiration mechanics) are documented in the 2021-10-04 Form F-1 (accession 0001193125-21-290644, search term: “Registration Rights” or “Stockholders Agreement”). To be re-extracted in next refresh and detailed here.
The May 2024 + March 2026 secondary offerings are mechanically Mubadala exercising demand-registration rights under the RRA. Each secondary reduces Mubadala’s stake; future demands are subject to the same terms.
Lock-Up Mechanics
Each secondary offering carries:
- Issuer lock-up — GF agrees not to issue additional shares for some period (typically 30–90 days) post-pricing, with carve-outs for employee equity awards.
- Officer / director lock-up — pre-arranged 10b5-1 trading-plan transactions can continue under permitted-exception language; otherwise officer / director sales are restricted during the lock-up period.
The post-March-2026 lock-up has now expired (the Hogan 2026-03-18 sale and Azar 2026-04-23 sale, both under pre-arranged 10b5-1 plans, are consistent with permitted-exception executions during the lock-up window followed by post-lock-up plan continuation). ⚠ exact lock-up duration in the March 2026 underwriting agreement to be confirmed.
5. Related-Party Transactions (Beyond Secondary Offerings)
The IPO F-1 prospectus disclosed a series of related-party agreements between GF and Mubadala-affiliated entities. Categories typical for sovereign-wealth-fund-controlled IPOs include:
Long-term wafer supply / off-take agreements
⚠ The Mubadala-affiliated portfolio (which includes substantial telecom, defense, and industrial-IoT investments via other PJSC subsidiaries) may have wafer-supply agreements with GF. Specific terms in F-1 / 20-F Item 7.B; to be backfilled in next refresh.
Services agreements
⚠ Cross-services / shared-services arrangements (procurement, IT, real-estate) between Mubadala-affiliated companies and GF. F-1 / 20-F Item 7.B; backfill needed.
Marketing / brand-licensing agreements
⚠ ⚠ less common for foundries; confirm in F-1.
Tax-sharing / cost-allocation agreements
Cayman-incorporated parent + multi-jurisdiction operating subsidiaries necessitate transfer-pricing / tax-allocation arrangements. ⚠ confirm in 20-F Item 5.A tax-rate-reconciliation footnotes.
Director & Officer compensation waivers
Mubadala-employed directors typically waive cash compensation (their service is part of their primary employment). ⚠ confirm pattern in 20-F Item 6.B.
For the photonics thesis specifically, the most relevant question is: does Mubadala or any Mubadala-affiliated entity have an off-take or capacity-reservation agreement on the Fotonix process? If yes, this would be material to the AI-photonics value-chain framing because Mubadala’s broader portfolio includes investments in semiconductor and AI infrastructure (e.g., G42, the Abu Dhabi AI / cloud company). ⚠ research question for next refresh; confirm via F-1 / 20-F Item 7.B and any G42-GF cross-disclosures.
6. Cayman-Law / UAE-Law Cross-Border Considerations
GlobalFoundries Inc. is incorporated in the Cayman Islands (an English-common-law jurisdiction) but its controlling shareholder is a UAE sovereign-wealth-fund-affiliated entity. The cross-border legal architecture has several implications for analysts:
- Service of process / shareholder litigation: Cayman-incorporated companies typically require derivative actions to be brought in Cayman courts under Cayman procedural law, which differs substantially from Delaware Chancery practice. The practical effect is that public-minority shareholder litigation against Mubadala or against GF management is procedurally more difficult than equivalent Delaware-corp litigation. ⚠ legal characterization, not legal advice.
- No domestic statutory income tax at the Cayman parent level (0% Cayman corporate tax). Substantive tax exposure flows through US, EU, Singapore, and Korean operating subsidiaries.
- Foreign-investment-control regimes: Mubadala’s UAE-state-affiliated status triggered no US CFIUS objection at IPO time (CFIUS generally distinguishes UAE sovereign-wealth investment from China-state investment based on national-security-alliance posture). However, the CHIPS Act award process required GF to satisfy “foreign-influence” screening criteria — the November 2024 CHIPS Act final award is implicit confirmation that GF cleared the relevant national-security review. ⚠ confirm in CHIPS Act award documents.
- Sanctions-regime exposure: Mubadala-affiliated entities are not on US OFAC sanctions lists. Routine sanctions-screening continues to apply to all GF cross-border transactions.
7. Capital Allocation Implications
Mubadala’s controlling stake shapes GFS’s capital allocation:
- Buyback authorization size and use: The February 2026 board approval of a $500M repurchase authorization deployed $300M in March 2026 to facilitate Mubadala’s sell-down. The remaining $200M is available for either market repurchases or another related-party-buyback round. Buybacks here serve a dual purpose: they reduce share count (per-share-accretive) AND provide liquidity to the controlling shareholder (related-party). This is typical of sponsor-controlled issuers and worth flagging to readers.
- Dividend policy: GFS has not declared a regular dividend post-IPO. ⚠ confirm in 20-F Item 5.A. The absence of a dividend is consistent with capital reinvestment into capacity expansion (Malta, Dresden SPRINT, AMF integration) plus FCF being available for opportunistic share repurchases.
- Capacity-investment cadence: The Malta Fab 8 expansion + Dresden SPRINT + AMF integration require multi-billion-dollar multi-year capex commitments. The Mubadala long-term-strategic-investor frame likely makes GFS more willing than a typical public foundry to absorb 12–24 months of margin compression during a capacity build (e.g., the Project SPRINT €1.1B Dresden buildout running through end-2028) without quarter-by-quarter share-price defensiveness. ⚠ analyst characterization.
8. Public-Float Mechanics
- Outstanding shares (post-March 2026): 549,072,416 ordinary shares.
- Mubadala-affiliated holdings: 423,042,773 shares (77.05%).
- Public float: ~126,029,643 shares (~22.95%).
- Market cap at $59 (proxy current price): ~$32.4B total / ~$7.4B public float.
The relatively concentrated public float (~$7.4B at current prices) is meaningful for index-inclusion mechanics: GFS qualifies for major indices (S&P 600 / Russell 2000) on total market cap but the float-adjusted weight is significantly smaller. Each Mubadala secondary offering grows the float-adjusted index weight, which can produce passive-flow tailwinds at index-rebalance dates. The May 2024 secondary added ~22M shares to the public float; the March 2026 secondary added ~20M shares (net of GF’s 7M-share buyback). ⚠ index-flow effect inferred, not measured.
Cross-section pointers
./governance— Board structure (Mubadala-affiliated directors, controlled-company exemption mechanics)../leadership— Mubadala-alumni concentration in C-suite (Breen CEO, Franklin CFO)../timeline— Capital-event row dates for IPO (2021-10-28), May 2024 secondary, and March 2026 secondary../mna_history— AMF Singapore acquisition (2025-11-17) and the IBM Microelectronics inheritance.- overview — Capital structure detail; share count history; buyback execution.
- overview — Schedule 13G/13F holdings tracker; daily price / short-interest / Form 4 (post-2026-03-18) feed.