# NATIONAL INSTRUMENTS CORP — DEFA14A

NATIONAL INSTRUMENTS CORP of AUSTIN, TX filed a DEFA14A with the SEC on 2023-04-12. Industry: Services-Prepackaged Software.

## Filing

- Filed: 2023-04-12
- Form: DEFA14A
- Accession: 0001140361-23-018011
- Registrant: NATIONAL INSTRUMENTS CORP
- CIK: 0000935494
- Industry (SIC): Services-Prepackaged Software (7372)
- State of incorporation: DE
- Location: AUSTIN, TX

## Documents (3)

| Seq | Type | Description |
| --- | --- | --- |
| 1 | DEFA14A | DEFA14A |
| 2 | EX-2.1 | EXHIBIT 2.1 |
| 3 | EX-4.1 | EXHIBIT 4.1 |

## Filing timeline for this registrant (57)

_Showing 12 of 57 filings._

| Filed | Form |
| --- | --- |
| [2023-06-22](https://search.stillhousedata.com/proxy/0001140361-23-030985) | DEFA14A |
| [2023-06-20](https://search.stillhousedata.com/proxy/0001140361-23-030550) | DEFA14A |
| [2023-05-25](https://search.stillhousedata.com/proxy/0001140361-23-026665) | DEFM14A |
| [2023-05-11](https://search.stillhousedata.com/proxy/0001140361-23-024195) | PREM14A |
| [2023-04-20](https://search.stillhousedata.com/proxy/0001140361-23-019414) | DEFA14A |
| [2023-04-18](https://search.stillhousedata.com/proxy/0001140361-23-018927) | DEFA14A |
| [2023-04-14](https://search.stillhousedata.com/proxy/0001140361-23-018505) | DEFA14A |
| [2023-04-14](https://search.stillhousedata.com/proxy/0001140361-23-018504) | DEFA14A |
| [2023-04-12](https://search.stillhousedata.com/proxy/0001140361-23-018013) | DEFA14A |
| 2023-04-12 | DEFA14A |
| [2023-04-12](https://search.stillhousedata.com/proxy/0001140361-23-017911) | DEFA14A |
| [2023-03-27](https://search.stillhousedata.com/proxy/0001140361-23-013881) | DEFA14A |

## More

- [CIK 935494 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=935494&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0001140361-23-018011.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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