# Investment Security Office

1 document across 1 day of the archive, 0 of them final rules. The five most recent days are below.

[HTML](https://downstream.sh/daily/agency/investment-security-office/) · [the long-form archive](https://downstream.sh/daily/agency/investment-security-office/archive.md) · [the daily issue](https://downstream.sh/daily/index.md)

## Dates this agency has set that have not yet arrived

| Date | Offset | What | Document | Agency |
|---|---|---|---|---|
| 2026-12-07 | +39d | Comments close | [Outbound Investment Security Program Regulations](https://www.federalregister.gov/documents/2026/10/26/2026-21786/outbound-investment-security-program-regulations) | Treasury Department · Investment Security Office |

## 26 October 2026 — 1 document

[the whole issue for this day](https://downstream.sh/daily/2026-10-26.md)

> The Investment Security Office proposed regulations implementing the Outbound Investment Security Program under the Defense Production Act. — via Downstream, https://downstream.sh/daily/agency/investment-security-office/#s-2026-10-26

*Machine-written by `claude-haiku-4-5-20251001` from the documents below.*

### Outbound Investment Security Program Regulations

*Proposed Rule* — Treasury Department · Investment Security Office

This proposed rule sets forth regulations that would implement Subtitle C of the Comprehensive Outbound Investment National Security Act, which is codified at Title VIII of the Defense Production Act. The proposed rule would require United States persons to provide notification to the U.S. Department of the Treasury regarding certain transactions involving foreign persons that are engaged in notifiable technologies; and prohibit United States persons from engaging in certain other transactions involving foreign persons that are engaged in prohibited technologies. Where consistent with Title VIII, the proposed rule incorporates certain definitions and concepts from the current regulations governing the Outbound Investment Security Program. The proposed rule also would add applicability dates to the regulations, such that those regulations would continue to apply to activities that occurred within the relevant timeframe.

- **Comments close** 7 December 2026 (in 39 days)

91 FR 67396 · FR Doc. 2026-21786 · [official PDF](https://www.govinfo.gov/content/pkg/FR-2026-10-26/pdf/2026-21786.pdf) · [federalregister.gov](https://www.federalregister.gov/documents/2026/10/26/2026-21786/outbound-investment-security-program-regulations)

## Ask an assistant instead

Everything on this page is also a tool call. Add `mcp.downstream.sh` as an MCP server — no key, no
account — then paste this:

```
Using the Downstream MCP server at mcp.downstream.sh, call whats_new_since with agency "Investment Security Office" since 2026-10-26, then summarise what changed and list every deadline it created.
```

Reaches `whats_new_since`. The response carries its own citations and states what it is missing,
including which dates it has no record for.

---

Every document linked here is a work of the United States government and in the public domain.
The Federal Register's HTML and XML renderings are unofficial; the PDF on each item is the
official text, and that is the one to cite.

Counts are arithmetic over published fields, dates are printed as filed, and titles are verbatim.
Where we have nothing, this says nothing rather than estimating. The one-sentence agency summaries
are machine-written from those same fields and are labelled where they appear.

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