MicroStrategy / Strategy preferred stock research outline

Prepared: 2026-02-15
Workspace: /home/ben/ava/research/mstr-preferreds/

1) Preferred-security universe identified

As of early 2026, SEC filings support five Strategy preferred instruments:

1. STRK — 8.00% Series A Perpetual Strike Preferred Stock (Nasdaq)
2. STRF — 10.00% Series A Perpetual Strife Preferred Stock (Nasdaq)
3. STRD — 10.00% Series A Perpetual Stride Preferred Stock (Nasdaq)
4. STRC — Variable Rate Series A Perpetual Stretch Preferred Stock (Nasdaq)
5. STRE — 10.00% Series A Perpetual Stream Preferred Stock (Luxembourg Stock Exchange Euro MTF)

Evidence summary saved at:

• /home/ben/ava/research/mstr-preferreds/identified_securities.md

2) Security-by-security summaries

STRK (Strike)

• Core document: final prospectus supplement (424B5) filed 2025-02-03 (d863145d424b5.htm)
• Initial deal: 7,300,000 shares at $80.00 (gross $584.0M; est. net ~$563.4M in 8-K)
• Dividend: 8.00% on $100 liquidation preference; cumulative; quarterly (Mar/Jun/Sep/Dec)
• Payment form: cash, MSTR stock, or mix (issuer election)
• Conversion: yes (holder option), initial conversion rate 0.1000 MSTR per STRK (initial conversion price ~$1,000/MSTR)
• Redemption:
  • optional “cleanup” redemption (all shares) if aggregate amount outstanding falls below 25% threshold
  • tax-event redemption (all shares)
• Fundamental change: holder repurchase right at liquidation preference + accrued/unpaid dividends
• Maturity: perpetual
• Par value: $0.001
• Listing: Nasdaq, ticker STRK

STRF (Strife)

• Core document: final 424B5 filed 2025-03-21 (d927140d424b5.htm)
• Initial deal: 8,500,000 shares at $85.00 (gross $722.5M; est. net ~$711.2M)
• Dividend: 10.00% on $100 stated amount; cumulative; cash; quarterly
• If unpaid: compounded-dividend mechanism (rate steps up by 100 bps per period up to 18%)
• Conversion: none (not convertible/exchangeable)
• Redemption: cleanup redemption + tax-event redemption (all shares)
• Fundamental change: repurchase right at stated amount + accrued/unpaid regular dividends
• Maturity: perpetual
• Par value: $0.001
• Listing: Nasdaq, ticker STRF

STRD (Stride)

• Core document: final 424B5 filed 2025-06-06 (d125757d424b5.htm)
• Initial deal: 11,764,700 shares at $85.00 (gross ~$1.0B; est. net ~$979.7M)
• Dividend: 10.00% on $100 stated amount; non-cumulative, discretionary, cash; quarterly
• Conversion: none
• Redemption: cleanup redemption + tax-event redemption (all shares)
• Fundamental change: repurchase right at stated amount + declared/unpaid dividends (not undeclared)
• Maturity: perpetual
• Par value: $0.001
• Listing: Nasdaq, ticker STRD

STRC (Stretch)

• Core document: final 424B5 filed 2025-07-25 (d852456d424b5.htm)
• Initial deal: 28,011,111 shares at $90.00 (gross ~$2.521B; est. net ~$2.474B)
• Dividend: variable-rate, cumulative, monthly cash dividends on $100 stated amount
  • initial rate: 9.00%
  • issuer can adjust monthly within SOFR-linked/step-down constraints
• Conversion: none
• Redemption:
  • issuer may redeem all or any whole number of shares at $101 + accrued dividends (subject to minimum outstanding aggregate stated amount for partials)
  • cleanup redemption + tax-event redemption also apply
• Fundamental change: repurchase right at stated amount + accrued/unpaid dividends
• Maturity: perpetual
• Par value: $0.001
• Listing: Nasdaq, ticker STRC
• Framework update (2026-02-05 8-K): monthly VWAP-band framework for dividend-rate recommendations

STRE (Stream)

• Core document: final 424B5 filed 2025-11-07 (d22199d424b5.htm)
• Initial deal: 7,750,000 shares at €80.00 (gross €620.0M; est. net €608.8M)
• Dividend: 10.00% on €100 stated amount; cumulative; cash; quarterly
• If unpaid: compounded-dividend step-up framework (up to 18%)
• Conversion: none
• Redemption: cleanup redemption + tax-event redemption (all shares)
• Fundamental change: repurchase right at stated amount + accrued/unpaid dividends
• Maturity: perpetual
• Par value: $0.001 (security definition in pricing 8-K)
• Listing: intended listing on Luxembourg Stock Exchange Official List / Euro MTF, symbol STRE
• U.S. quote status: STRE not found in Nasdaq U.S. equity API as of 2026-02-15

3) Comparison table of key terms

| Security | STRK | STRF | STRD | STRC | STRE | |—|—|—|—|—|—| | Full name | 8.00% Series A Perpetual Strike | 10.00% Series A Perpetual Strife | 10.00% Series A Perpetual Stride | Variable Rate Series A Perpetual Stretch | 10.00% Series A Perpetual Stream | | Listing venue | Nasdaq | Nasdaq | Nasdaq | Nasdaq | Luxembourg Euro MTF | | Currency base | USD | USD | USD | USD | EUR | | Stated amount | $100 (liquidation pref basis) | $100 | $100 | $100 | €100 | | Par value | $0.001 | $0.001 | $0.001 | $0.001 | $0.001 | | Initial coupon / rate | 8.00% | 10.00% | 10.00% | 9.00% initial, variable monthly | 10.00% | | Dividend type | Cumulative | Cumulative | Non-cumulative | Cumulative (variable) | Cumulative | | Payment frequency | Quarterly | Quarterly | Quarterly | Monthly | Quarterly | | Dividend in stock allowed? | Yes (cash/MSTR/mix) | No (cash) | No (cash) | No (cash) | No (cash) | | Conversion | Yes (into MSTR) | No | No | No | No | | Initial conversion terms | 0.1000 MSTR per STRK (~$1,000 conversion price) | — | — | — | — | | Optional redemption | Cleanup + tax event (all) | Cleanup + tax event (all) | Cleanup + tax event (all) | $101 call feature + cleanup + tax event | Cleanup + tax event (all) | | Fundamental-change put | Yes | Yes | Yes | Yes | Yes | | Perpetual / maturity | Perpetual | Perpetual | Perpetual | Perpetual | Perpetual |

4) Amount raised / outstanding context

Initial underwritten offerings (core deals)

• STRK: gross $584.0M; est. net ~$563.4M
• STRF: gross $722.5M; est. net ~$711.2M
• STRD: gross ~$1.0B; est. net ~$979.7M
• STRC: gross ~$2.521B; est. net ~$2.474B
• STRE: gross €620.0M; est. net €608.8M (8-K also shows ~$715.1M gross / ~$702.2M net USD equivalent at stated FX)

Selected outstanding-share snapshots from filings

• From Nov-2025 docs (as-of dates around Oct 30/31, 2025):
  • STRK: 13,918,518
  • STRF: 12,470,812 (or 12,434,677 in STRE doc using Oct 30 date)
  • STRD: 12,539,683
  • STRC: 28,011,111
• STRE initial issuance: 7,750,000 shares (Nov 2025 offering)

ATM program context (important for dilution / funding)

• Nov 2025 “omnibus” base supplement + annexes set large ATM capacities for STRK/STRF/STRD/STRC.
• 2026-02-09 8-K ATM update gives remaining capacity as of 2026-02-08:
  • STRF: $1,619.3M available
  • STRC: $3,621.4M available
  • STRK: $20,331.6M available
  • STRD: $4,014.8M available
• Implied cumulative issuance since Nov-2025 omnibus reset (program size minus remaining):
  • STRF: ~$40.7M notional
  • STRC: ~$578.6M notional
  • STRK: ~$9.0M notional
  • STRD: ~$119.0M notional
  • (For preferreds, 2026-02-09 8-K notes notional equals total face value of preferred shares sold.)
• Same 8-K states BTC purchases were made using ATM-sale proceeds.

5) Current market price and yield snapshot (2026-02-15 pull)

Source files:

• /home/ben/ava/research/mstr-preferreds/market_snapshot.md
• /home/ben/ava/research/mstr-preferreds/market-data/

| Ticker | Last sale | Nasdaq annualized dividend | Nasdaq indicated yield | |—|—:|—:|—:| | STRK | $78.00 | 8.00 | 10.57% | | STRF | $99.75 | 10.00 | 10.18% | | STRD | $76.36 | 10.00 | 13.29% | | STRC | $99.80 | 11.25 | 11.25% | | STRE | N/A in Nasdaq US API | N/A | N/A |

Notes:

• STRC’s yield is dynamic because its dividend rate is variable and board-declared.
• STRE is euro-market listed in filing disclosures; U.S. quote feeds may not carry it.

6) Risk factors specific to these instruments

Shared instrument-level risks

1. Subordination to debt: all preferreds are junior to existing/future indebtedness and structurally junior to subsidiary liabilities.
2. Dividend funding risk: filings repeatedly note cash dividend capacity may depend on ongoing access to equity/preferred issuance programs.
3. BTC strategy dependency: proceeds are generally intended for bitcoin acquisition and working capital; bitcoin volatility can impair financing flexibility.
4. Future issuance dilution / ranking risk: issuer can create additional preferred series and increase authorized amounts.
5. Tax-structure complexity: multiple annexes discuss U.S. fast-pay/disqualified-preferred-stock risks under certain issuance patterns.

Security-specific risks

• STRK: equity-conversion economics tied to MSTR stock price/volatility; additional potential dilution from conversion and stock-settled dividends.
• STRF: cumulative-dividend arrears can compound (up to 18%), but payment still depends on legal/financial capacity.
• STRD: non-cumulative structure means missed dividends are generally lost (not accrued).
• STRC: issuer discretion to reduce/increase dividend rate (within constraints) can directly affect trading value; explicit price-target management may fail.
• STRE: EUR denomination introduces FX risk for holders and issuer cash-management risk (USD assets vs EUR obligations).

7) How these preferreds fit Strategy’s capital structure + BTC acquisition strategy

Capital-structure function

• These preferreds appear to create a stack of quasi-income instruments with different:
  • seniority,
  • payout certainty,
  • currency,
  • and optionality (conversion for STRK only).
• A filing-based ordering (subject to future issuance changes) appears to be:
  • Senior: debt
  • then STRF
  • then STRC
  • then STRE
  • then STRK
  • then STRD
  • then common equity

BTC strategy integration

• Prospectuses and 8-K pricing announcements repeatedly state net proceeds are for general corporate purposes including bitcoin acquisition.
• Frequent ATM updates + BTC purchase disclosures (e.g., 2026-02-09 8-K) show an operating model of:
  1. issuing equity/preferred instruments,
  2. deploying proceeds into bitcoin,
  3. managing dividend and capital needs via additional financing windows.

Practical interpretation

• Preferreds are being used both as:
  • capital-raising tools to continue BTC accumulation, and
  • investor segmentation tools (fixed vs variable, cumulative vs non-cumulative, USD vs EUR, conversion optionality vs no conversion).

8) Analyst commentary / market reception (secondary-source layer)

See: /home/ben/ava/research/mstr-preferreds/market_reception_notes.md

High-level read-through:

• Coverage commonly frames these securities as high-yield alternatives tied to Strategy’s BTC-financing strategy.
• Commentary frequently highlights complexity premium/discount (investors must underwrite structure, not only coupon).
• STRC specifically receives attention for near-par behavior and issuance flexibility.

9) Key downloaded-document locations

• Master index: /home/ben/ava/research/mstr-preferreds/documents_index.md
• Raw SEC docs: /home/ben/ava/research/mstr-preferreds/sec-filings/
• Text-converted docs: /home/ben/ava/research/mstr-preferreds/sec-filings/text/
• Market data: /home/ben/ava/research/mstr-preferreds/market-data/

10) Primary SEC filing references (quick list)

• S-3 shelf: 2025-01-27 S-3ASR (d608278ds3asr.htm)
• STRK: 2025-02-03 424B5 (d863145d424b5.htm), 2025-02-05 8-A12B (d926493d8a12b.htm), 2025-02-05 certificate PDF (STRK_8-A_Cert.pdf)
• STRF: 2025-03-21 424B5 (d927140d424b5.htm), 2025-03-25 8-A12B (d943714d8a12b.htm), 2025-03-25 certificate PDF (STRF_8-A_Cert.pdf)
• STRD: 2025-06-06 424B5 (d125757d424b5.htm), 2025-06-10 8-A12B (d947318d8a12b.htm), 2025-06-10 certificate PDF (STRD_8-A_Cert.pdf)
• STRC: 2025-07-25 424B5 (d852456d424b5.htm), 2025-07-29 8-A12B (d33775d8a12b.htm), 2025-07-29 certificate PDF (STRC_8-A_Cert.pdf)
• STRE: 2025-11-07 424B5 (d22199d424b5.htm), 2025-11-07 pricing 8-K (d78313d8k.htm), 2025-11-13 designation 8-K (d205736d8k.htm)
• Omnibus preferred/common ATM stack: 2025-11-04 base supplement (d87896d424b2.htm) + annexes (d90859d424b5.htm, d919681d424b5.htm, d921571d424b5.htm, d922690d424b5.htm)
• Recent ATM/BTC linkage update: 2026-02-09 8-K (mstr-20260105.htm)