SEC 13F Intelligence

Granahan Investment Management, LLC / IRTC

Granahan Investment Management, LLC’s Irhythm Holdings Inc Position

Does Granahan Investment Management, LLC own Irhythm Holdings Inc (IRTC)? Yes — 96.0K shares worth $11M (+0.55% of its 13F portfolio) as of Q1 2026, up from 14.4K shares the prior filed quarter.

Position Value
$11M
Q1 2026
Shares
96.0K
% of Portfolio
+0.55%
Quarters Held
8
currently held

Position History IRTC

Reported value by quarter
Q4 ’20: $3MQ4 ’20Q3 ’24: $5MQ3 ’24Q4 ’24: $4MQ4 ’24Q1 ’25: $2MQ1 ’25Q2 ’25: $2MQ2 ’25Q3 ’25: $3MQ3 ’25Q4 ’25: $3MQ4 ’25Q1 ’26: $11MQ1 ’26filingsflow.com
QuarterSharesValue% of Portfolio
Q1 202696.0K$11M+0.55%
Q4 202514.4K$3M+0.11%
Q3 202514.9K$3M+0.11%
Q2 202512.7K$2M+0.08%
Q1 202514.8K$2M+0.08%
Q4 202445.7K$4M+0.17%
Q3 202472.4K$5M+0.21%
Q4 202012.3K$3M+0.07%

Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Granahan Investment Management, LLC’s full portfolio or all institutional holders of IRTC.