REIN THERAPEUTICS, INC.
REIN THERAPEUTICS, INC. is a registered legal entity registered in United States under 0805523671, and its current status with Texas Secretary of State — SOSDirect is active. The company was incorporated on 2 April 2026 and lists its registered address as DALLAS, United States. 2 shareholders are on record for REIN THERAPEUTICS, INC., and since every one of them is a company rather than an individual, this particular filing does not on its own establish an ultimate beneficial owner (UBO) — identifying one would mean tracing the ownership of each shareholding company in turn. This profile is sourced directly from Texas Secretary of State — SOSDirect and was last updated on 5 October 2026.
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Shareholders
2
Two shareholders are currently on record for REIN THERAPEUTICS, INC., reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing.
The largest of these is Vanguard Group Inc, holding 12.9% — the largest recorded stake — followed by Sigma Planning Corp at 2.7%.
Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| Vanguard Group Inc | 12.9% | Texas Secretary of State — SOSDirect | |
| Sigma Planning Corp | 2.7% | Texas Secretary of State — SOSDirect |
Officers
5
The Ceo, President & Director of REIN THERAPEUTICS, INC. currently on record is James Brian Windsor Ph.d.; five officers are currently on record for REIN THERAPEUTICS, INC., filed with Texas Secretary of State — SOSDirect.
Management authority at REIN THERAPEUTICS, INC. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
Group Structure
REIN THERAPEUTICS, INC. has no recorded parent company — it sits at the top of its own group structure, with 1 subsidiary recorded beneath it across 1 jurisdiction. Each of these downward relationships is derived rather than filed: resolved by matching entities across the registry network, not stated directly in a single document.
Those 1 subsidiary spans United States jurisdiction, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear. One of the 1 go a level deeper still, with its own further subsidiaries recorded beneath it — additional ownership layers this view doesn't expand.
REIN THERAPEUTICS, INC.
United States
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Frequently Asked Questions
Who owns REIN THERAPEUTICS, INC.?
Two shareholders are currently on record for REIN THERAPEUTICS, INC., reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing. The largest of these is Vanguard Group Inc, holding 12.9% — the largest recorded stake — followed by Sigma Planning Corp at 2.7%. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Who is REIN THERAPEUTICS, INC.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for REIN THERAPEUTICS, INC. is itself a company rather than a natural person, so no Ultimate Beneficial Owner (UBO) is identified at this level; establishing one would require tracing the ownership of each shareholding company in turn.
How many shareholders does REIN THERAPEUTICS, INC. have on record?
2 shareholders are shown on record for REIN THERAPEUTICS, INC..
What is REIN THERAPEUTICS, INC.'s company registration number?
REIN THERAPEUTICS, INC.'s registration number is 0805523671, filed with Texas Secretary of State — SOSDirect in United States. Its current status on the register is active.
Is REIN THERAPEUTICS, INC. still an active company?
REIN THERAPEUTICS, INC.'s status on Texas Secretary of State — SOSDirect is listed as active.
When was REIN THERAPEUTICS, INC. incorporated?
REIN THERAPEUTICS, INC. was incorporated on 2 April 2026, according to Texas Secretary of State — SOSDirect.
What is REIN THERAPEUTICS, INC.'s registered address?
The registered address on file for REIN THERAPEUTICS, INC. is DALLAS, United States.
Who are the officers/directors of REIN THERAPEUTICS, INC.?
The Ceo, President & Director of REIN THERAPEUTICS, INC. currently on record is James Brian Windsor Ph.d.; five officers are currently on record for REIN THERAPEUTICS, INC., filed with Texas Secretary of State — SOSDirect. Management authority at REIN THERAPEUTICS, INC. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does REIN THERAPEUTICS, INC. have a parent company or subsidiaries?
REIN THERAPEUTICS, INC. has no recorded parent company — it sits at the top of its own group structure, with 1 subsidiary recorded beneath it across 1 jurisdiction. Those 1 subsidiary spans United States jurisdiction, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear. One of the 1 go a level deeper still, with its own further subsidiaries recorded beneath it — additional ownership layers this view doesn't expand.
Can Zavia monitor changes to REIN THERAPEUTICS, INC.'s ownership over time?
This profile reflects a point-in-time snapshot from Texas Secretary of State — SOSDirect. Zavia's monitoring API can track changes to REIN THERAPEUTICS, INC.'s registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access REIN THERAPEUTICS, INC.'s data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including United States, so records like REIN THERAPEUTICS, INC.'s registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from Texas Secretary of State — SOSDirect and was last synced on 5 October 2026.