OBERWEIS ASSET MANAGEMENT INC/

Position in ATEC — Alphatec Holdings, Inc.

CIK 937886 LISLE, IL

Position in ATEC

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$20,762,227

-$286,189 QoQ

Shares Held

1,908,293

+90.8% QoQ

Ownership

1.24%

of shares outstanding

% of Portfolio

0.62%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2020

19 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

OBERWEIS ASSET MANAGEMENT INC/ holds $130,247,110 across 5 Medical Devices names.

#	Ticker	Company	Shares	Value (USD)
1	LIVN	LivaNova PLC	500,150	$41,127,334
2	GMED	Globus Medical Inc	512,100	$40,461,021
3	IRTC	iRhythm Holdings, Inc.	202,004	$24,028,375
4	AXGN	Axogen, Inc.	388,194	$17,930,680
5	BVS	Bioventus Inc.	709,714	$6,699,700

19 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$20,762,227	1,908,293	+90.8%	Shares	Sole	2026-05-15
2025-12-31	$21,048,416	1,000,400	+116.9%	Shares	Sole	2026-02-17
2025-09-30	$6,704,713	461,122	-65.3%	Shares	Sole	2025-11-17
2024-06-30	$13,870,912	1,327,360	-4.2%	Shares	Sole	2024-08-14
2024-03-31	$19,111,285	1,385,880	-13.8%	Shares	Sole	2024-05-15
2023-12-31	$24,294,160	1,607,820	+30.1%	Shares	Sole	2024-02-14
2023-09-30	$16,031,438	1,236,040	+26.1%	Shares	Sole	2023-11-14
2023-06-30	$17,628,850	980,470	+44.5%	Shares	Sole	2023-08-14
2023-03-31	$10,585,068	678,530	+34.8%	Shares	Sole	2023-05-15
2022-12-31	$6,215,631	503,290	+11.2%	Shares	Sole	2023-02-14
2022-09-30	$3,955,374	452,560	+12.5%	Shares	Sole	2022-11-14
2022-06-30	$2,630,126	402,160	-9.8%	Shares	Sole	2022-08-15
2022-03-31	$5,129,690	446,060	-33.8%	Shares	Sole	2022-05-16
2021-12-31	$7,705,763	674,170	+16.2%	Shares	Sole	2022-02-14
2021-09-30	$7,070,565	580,030	+33.2%	Shares	Sole	2021-11-15
2021-06-30	$6,672,319	435,530	+0.0%	Shares	Sole	2021-08-16
2021-03-31	$6,875,913	435,460	+65.3%	Shares	Sole	2021-05-17
2020-12-31	$3,824,568	263,400	+91.4%	Shares	Sole	2021-02-16
2020-09-30	$913,664	137,600	—	Shares	Sole	2020-11-16
No filing history on record for this holder in this stock.