Investors who own more than 5% of a class must file a Schedule 13D or 13G. Every filing since 12/18/2024, newest first.
| Issuer | % of Class | Filed | |||
|---|---|---|---|---|---|
|
Aspen Aerogels Inc
13G/A
Amendment 1
ASPN · 04523Y105
|
3.9% |
8/13/2026
Event 6/30/2026
|
|||
| Needham Investment Management L.L.C. | 3.9% | ||||
| Needham Asset Management, LLC | 3.9% | ||||
| George A. Needham | 3.9% | ||||
|
Elmet Group Co.
13G/A
Amendment 1
ELMT · 289395105
|
8.8% |
8/13/2026
Event 6/30/2026
|
|||
| Needham Investment Management L.L.C. | 8.8% | ||||
| Needham Asset Management, LLC | 8.8% | ||||
| Needham Aggressive Growth Fund | 6.8% | ||||
| George A. Needham | 8.8% | ||||
|
Lantronix Inc
13G
LTRX · 516548203
|
7.1% |
7/2/2026
Event 6/18/2026
|
|||
| Needham Investment Management L.L.C. | 7.1% | ||||
| Needham Asset Management, LLC | 7.1% | ||||
| Needham Aggressive Growth Fund | 5.4% | ||||
| George A. Needham | 7.1% | ||||
|
ThredUp Inc.
13G/A
Amendment 3
TDUP · 88556E102
|
8.7% |
5/14/2026
Event 3/31/2026
|
|||
| Needham Investment Management L.L.C. | 8.7% | ||||
| Needham Asset Management, LLC | 8.7% | ||||
| Needham Aggressive Growth Fund | 8.7% | ||||
| George A. Needham | 8.7% | ||||
|
PDF Solutions, Inc.
13G
PDFS · 693282105
|
5.1% |
5/14/2026
Event 3/31/2026
|
|||
| Needham Investment Management L.L.C. | 5.1% | ||||
| Needham Asset Management, LLC | 5.1% | ||||
| George A. Needham | 5.1% | ||||
|
Precision Optics Corporation, Inc.
13G/A
Amendment 3
POCI · 740294400
|
15.3% |
5/14/2026
Event 3/31/2026
|
|||
| Needham Investment Management L.L.C. | 15.3% | ||||
| Needham Asset Management, LLC | 15.3% | ||||
| Needham Aggressive Growth Fund | 15.3% | ||||
| George A. Needham | 15.3% | ||||
|
Northern Technologies International Corp.
13G/A
Amendment 2
NTIC · 665809109
|
8.1% |
5/14/2026
Event 3/31/2026
|
|||
| Needham Investment Management L.L.C. | 8.1% | ||||
| Needham Asset Management, LLC | 8.1% | ||||
| Needham Aggressive Growth Fund | 8.1% | ||||
| George A. Needham | 8.1% | ||||
|
Elmet Group Co.
13G
ELMT · 289395105
|
7.3% |
5/4/2026
Event 4/27/2026
|
|||
| Needham Investment Management LLC | 7.3% | ||||
| Needham Asset Management, LLC | 7.3% | ||||
| Needham Aggressive Growth Fund | 5.6% | ||||
|
Alpha Pro Tech, Ltd.
13G/A
Amendment 1
APT · 020772109
|
6.2% |
2/13/2026
Event 12/31/2025
|
|||
| Needham Investment Management L.L.C. | 6.2% | ||||
| Needham Asset Management, LLC | 6.2% | ||||
| Needham Aggressive Growth Fund | 6.2% | ||||
| George A. Needham | 6.2% | ||||
|
Unisys Corporation
13G/A
Amendment 2
UIS · 909214306
|
6.8% |
2/13/2026
Event 12/31/2025
|
|||
| Needham Investment Management L.L.C. | 6.8% | ||||
| Needham Asset Management, LLC | 6.8% | ||||
| Needham Aggressive Growth Fund | 5.7% | ||||
| George A. Needham | 6.8% | ||||
|
Comtech Telecommunications Corp. /DE/
13G/A
Amendment 2
CMTL · 205826209
|
4.0% |
2/13/2026
Event 12/31/2025
|
|||
| Needham Investment Management L.L.C. | 4.0% | ||||
| Needham Asset Management, LLC | 4.0% | ||||
| Needham Aggressive Growth Fund | 3.4% | ||||
| George A. Needham | 4.0% | ||||
|
Oil-Dri Corporation of America
13G/A
Amendment 1
ODC · 677864100
|
6.1% |
2/13/2026
Event 12/31/2025
|
|||
| Needham Investment Management L.L.C. | 6.1% | ||||
| Needham Asset Management, LLC | 6.1% | ||||
| Needham Aggressive Growth Fund | 6.1% | ||||
| George A. Needham | 6.1% | ||||
|
PDF Solutions Inc
13G/A
Amendment 1
PDFS · 693282105
|
4.9% |
2/13/2026
Event 12/31/2025
|
|||
| Needham Investment Management L.L.C. | 4.9% | ||||
| Needham Asset Management, LLC | 4.9% | ||||
| Needham Aggressive Growth Fund | 3.7% | ||||
| Needham Growth Fund | 0.7% | ||||
| Needham Small Cap Growth Fund | 0.6% | ||||
| George A. Needham | 4.9% | ||||
|
Aspen Aerogels Inc
13G
ASPN · 04523Y105
|
5.3% |
2/13/2026
Event 12/31/2025
|
|||
| Needham Investment Management L.L.C. | 5.3% | ||||
| Needham Asset Management, LLC | 5.3% | ||||
| George A. Needham | 5.3% | ||||
|
PDF Solutions, Inc.
13G
PDFS · 693282105
|
5.1% |
11/13/2025
Event 9/30/2025
|
|||
| Needham Investment Management L.L.C. | 5.1% | ||||
| Needham Asset Management, LLC | 5.1% | ||||
| Needham Aggressive Growth Fund | 3.5% | ||||
| Needham Growth Fund | 0.7% | ||||
| Needham Small Cap Growth Fund | 0.9% | ||||
| George A. Needham | 5.1% | ||||
|
Northern Technologies International Corp.
13G/A
Amendment 1
NTIC · 665809109
|
6.8% |
11/13/2025
Event 9/30/2025
|
|||
| Needham Investment Management L.L.C. | 6.8% | ||||
| Needham Asset Management, LLC | 6.8% | ||||
| Needham Aggressive Growth Fund | 6.8% | ||||
| George A. Needham | 6.8% | ||||
|
Arteris, Inc.
13G/A
Amendment 1
AIP · 04302A104
|
7.8% |
11/13/2025
Event 9/30/2025
|
|||
| Needham Investment Management L.L.C. | 7.8% | ||||
| Needham Asset Management, LLC | 7.8% | ||||
| Needham Aggressive Growth Fund | 6.2% | ||||
| George A. Needham | 7.8% | ||||
|
Nlight, Inc.
13G/A
Amendment 1
LASR · 65487K100
|
3.7% |
8/13/2025
Event 6/30/2025
|
|||
| Needham Investment Management L.L.C. | 3.7% | ||||
| Needham Asset Management, LLC | 3.7% | ||||
| Needham Aggressive Growth Fund | 3.1% | ||||
| Needham Growth Fund | 0% | ||||
| Needham Small Cap Growth Fund | 0.3% | ||||
| Needham Contrarian (QP) Fund, LP | 0.1% | ||||
| Needham Emerging Growth Partners, LP | 0.3% | ||||
| George A. Needham | 3.7% | ||||
|
ThredUp Inc.
13G/A
Amendment 2
TDUP · 88556E102
|
6.1% |
8/13/2025
Event 6/30/2025
|
|||
| Needham Investment Management L.L.C. | 6.1% | ||||
| Needham Asset Management, LLC | 6.1% | ||||
| Needham Aggressive Growth Fund | 6.1% | ||||
| George A. Needham | 6.1% | ||||
|
KVH Industries, Inc.
13G/A
Amendment 11
KVHI · 482738101
|
4.2% |
8/13/2025
Event 6/30/2025
|
|||
| Needham Investment Management L.L.C. | 3.8% | ||||
| Needham Asset Management, LLC | 3.8% | ||||
| Needham Holdings, LLC | 3.8% | ||||
| The Needham Group, Inc. | 4.2% | ||||
| George A. Needham | 4.2% | ||||
|
Precision Optics Corporation, Inc.
13G/A
Amendment 2
POCI · 740294400
|
9.1% |
5/14/2025
Event 3/31/2025
|
|||
| Needham Investment Management LLC | 9.1% | ||||
| Needham Asset Management, LLC | 9.1% | ||||
| Needham Aggressive Growth Fund | 9.1% | ||||
| George A. Needham | 9.1% | ||||
|
Unisys Corporation
13G/A
Amendment 1
UIS · 909214306
|
8.0% |
5/14/2025
Event 3/31/2025
|
|||
| Needham Investment Management LLC | 8.0% | ||||
| Needham Asset Management, LLC | 8.0% | ||||
| Needham Aggressive Growth Fund | 6.6% | ||||
| George A. Needham | 8.0% | ||||
|
Adams Resources & Energy, Inc.
13G/A
Amendment 3
AE · 006351308
|
0% |
5/14/2025
Event 3/31/2025
|
|||
| Needham Investment Management LLC | 0% | ||||
| Needham Asset Management, LLC | 0% | ||||
| George A. Needham | 0% | ||||
| Needham Aggressive Growth Fund | 0% | ||||
|
Logility Supply Chain Solutions Inc. (fka American Software Inc.)
13G/A
Amendment 1
LGTY · 029683109
|
1.4% |
5/14/2025
Event 3/31/2025
|
|||
| Needham Investment Management LLC | 1.4% | ||||
| Needham Asset Management, LLC | 1.4% | ||||
| Needham Aggressive Growth Fund | 1.4% | ||||
| George A. Needham | 1.4% | ||||
|
Matrix Service Co
13G
MTRX · 576853105
|
5.2% |
2/13/2025
Event 12/31/2024
|
|||
| Needham Investment Management LLC | 5.2% | ||||
| Needham Asset Management, LLC | 5.2% | ||||
| Needham Aggressive Growth Fund | 5.2% | ||||
| George A. Needham | 5.2% | ||||
|
Nlight, Inc.
13G
LASR · 65487K100
|
5.5% |
2/13/2025
Event 12/31/2024
|
|||
| Needham Investment Management LLC | 5.5% | ||||
| Needham Asset Management, LLC | 5.5% | ||||
| Needham Aggressive Growth Fund | 3.5% | ||||
| Needham Growth Fund | 0.3% | ||||
| Needham Small Cap Growth Fund | 1.4% | ||||
| Needham Contrarian (QP) Fund, LP | 0.1% | ||||
| Needham Emerging Growth Partners, LP | 0.3% | ||||
| George A. Needham | 5.5% | ||||
|
Comtech Telecommunications Corp
13G/A
Amendment 1
CMTL · 205826209
|
6.1% |
12/20/2024
Event 12/17/2024
|
|||
| Needham Investment Management LLC | 6.1% | ||||
| Needham Asset Management, LLC | 6.1% | ||||
| Needham Aggressive Growth Fund | 5.1% | ||||
| George A. Needham | 6.1% | ||||