Forrester Research, Inc.
FORR- Exchange
- Nasdaq
- Industry
- Services-Engineering, Accounting, Research, Management
- SEC CIK
- 0001023313
In the last 90 days, Forrester Research, Inc. insiders filed 0 open-market purchases and 3 sales; 98 institutions reported holding it in 13F filings for Q2 2026, worth $90.5M in total; no superinvestor holds it.
Holders of 5% or more of FORR
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Forrester Research, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Colony George F | 13G/A | 38.70%7.38M shares | −0.20 ppfrom 38.90% | Jan 28, 20213 filings | Jul 1, 2025 | SEC |
| Portolan Capital Management, LLC | 13G/A | 7.94%1.54M shares | +1.82 ppfrom 6.12% | Feb 19, 20262 filings | May 15, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
13 Schedule 13D and 13G filings on Forrester Research, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| May 15, 20264:05 PM ET | Portolan Capital Management, LLCand 1 other | 13G/A | 7.94%1.54M shares | +1.82 ppfrom 6.12% | Mar 31, 2026 | SEC |
| Feb 19, 20265:43 PM ET | Portolan Capital Management, LLCand 1 other | 13G | 6.12%1.16M shares | New | Feb 11, 2026 | SEC |
| Oct 22, 202512:11 PM ET | Royce & Associates LP | 13G/A | 0.56%106.4K shares | −5.32 ppfrom 5.88%Below 5% | Sep 30, 2025 | SEC |
| Jul 22, 20259:59 AM ET | Royce & Associates LP | 13G/A | 5.88%1.12M shares | −3.78 ppfrom 9.66% | Jun 30, 2025 | SEC |
| Jul 1, 20255:21 PM ET | Colony George F | 13G/A | 38.70%7.38M shares | −0.20 ppfrom 38.90% | Jun 30, 2025 | SEC |
| Apr 29, 202510:07 AM ET | Royce & Associates LP | 13G/A | 9.66%1.83M shares | – | Mar 31, 2025 | SEC |
| Apr 9, 20254:05 PM ET | Colony George F | 13G/A | 38.90%7.38M shares | – | Mar 31, 2025 | SEC |
| Feb 5, 20255:28 PM ET | BlackRock, Inc. | 13G/A | 4.98%946.2K shares | –Below 5% | Dec 31, 2024 | SEC |
| Feb 11, 2021 | Renaissance Technologies LLC | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 4, 2021 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
| Jan 28, 2021 | Colony George F | 13G/AOld format | – | – | – | SEC |
| Jan 21, 2021 | Royce & Associates LP | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Forrester Research, Inc. shares.
No Form 144 notices for Forrester Research, Inc. are on file.