Position in MASS
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$4,253,828
+$3,775,338 QoQ
Shares Held
695,070
+662.6% QoQ
Ownership
1.84%
of shares outstanding
% of Portfolio
0.21%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2021
19 quarters on record
Voting authority
Sole 90.21724430632887.ToString("F0")%
Shared 0.ToString("F0")%
None 9.782755693671142.ToString("F0")%
Common Shares in MASS Over Time
Shares Held
Position Value (USD)
Position in Medical Devices
Healthcare · as of Mar 31, 2026Granahan Investment Management, LLC holds $63,165,697 across 8 Medical Devices names. MASS ranks #5 (6.7% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | SIBN |
SI-BONE, Inc.
|
1,739,097 | $21,964,795 | |
| 2 | KIDS |
Orthopediatrics Corp
|
896,741 | $14,231,279 | |
| 3 | IRTC |
iRhythm Holdings, Inc.
|
96,022 | $11,332,516 | |
| 4 | OWLT |
Owlet, Inc.
|
1,186,655 | $6,099,406 | |
| 5 | MASS |
908 Devices Inc.
This page
|
695,070 | $4,253,828 | |
| 6 | BBNX |
Beta Bionics, Inc.
|
248,449 | $2,489,458 | |
| 7 | NEOG |
Neogen Corp
|
250,026 | $2,322,741 | |
| 8 | IRMD |
Iradimed Corp
|
4,900 | $471,674 |
All Filings in MASS
Export CSV
19 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $4,253,828 | 695,070 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $478,490 | 91,141 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $563,600 | 64,338 | Shares | Sole | 2025-11-14 | |
| 2024-12-31 | $1,150,129 | 522,786 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $2,989,172 | 861,433 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $4,736,089 | 919,629 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $13,094,508 | 1,734,372 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $22,873,742 | 2,038,658 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $12,276,311 | 1,843,290 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $12,250,265 | 1,785,753 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $15,127,193 | 1,758,976 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $8,419,368 | 1,104,904 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $15,913,137 | 967,364 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $18,536,250 | 900,255 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $16,210,055 | 852,712 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $20,579,145 | 795,483 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $20,544,575 | 631,752 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $22,159,187 | 571,850 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $21,977,581 | 453,146 | Shares | Sole | 2021-05-17 | |
| No filing history on record for this holder in this stock. | ||||||