SEC ownership of CBIZ, Inc.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000944148.

Comparable stake leader

BANK OF MONTREAL /CAN/

Disclosed value leader

FMR LLC

Comparable rows

5/50

Latest evidence

30 Jun 2026

Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
5 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
BANK OF MONTREAL /CAN/
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
30 Jun 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0000944148
Issuer location
Independence, OH

Ownership snapshot

Top shareholders of CBIZ, Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
BANK OF MONTREAL /CAN/
Disclosed value leader
FMR LLC
Comparable rows
5/50
Latest evidence
30 Jun 2026
13F 13D/G 3/4/5 Lead comparable stake: 6.4% 45 rows are not safely comparable across share classes. 13D/G row: BANK OF MONTREAL /CAN/ Showing 1-8 of 50 holder rows.

Quick read

BANK OF MONTREAL /CAN/ leads the comparable SEC ownership view at 6.4%.

5 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BANK OF MONTREAL /CAN/'s linked filing trail.
Comparable ownership Top 5
BANK OF MONTREAL /CAN/ 6.4%
FMR LLC 5.8%
Winn David Randall 5.2%
Durable Capital Partners LP 3%
MORGAN STANLEY 3%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
BANK OF MONTREAL /CAN/
13F 13D/G
Company · Bank of Montreal
6.4%
Reported 13D/G · 31 Mar 2026
$110,795,434
3,453,723 shares
— 30 Jun 2026
FMR LLC
13F 13D/G
Company
5.8%
Reported 13D/G · 30 Sep 2026
$258,156,807
8,047,282 shares
— 30 Jun 2026
Winn David Randall
13D/G
22C Capital LLC
5.2%
Reported 13D/G · 01 May 2025
$186,276,683
2,804,527 shares
$0 01 May 2025
Durable Capital Partners LP
13D/G
3%
Reported 13D/G · 31 Dec 2025
$88,517,999
1,631,969 shares
-$124,377,636 31 Dec 2025
MORGAN STANLEY
13F 13D/G
Company
3%
Reported 13D/G · 31 Mar 2026
$47,887,007
1,492,737 shares
— 30 Jun 2026
BlackRock, Inc.
13F
Company
13F
—
denominator unverified
$159,494,896
4,971,786 shares
— 30 Jun 2026
22C Capital LLC
13F
Company
13F
—
denominator unverified
$102,728,725
3,202,267 shares
— 30 Jun 2026
VANGUARD CAPITAL MANAGEMENT LLC
13F
Company
13F
—
denominator unverified
$72,499,741
2,259,967 shares
— 30 Jun 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to selling over the last 12 months. Net value: -$426,820.

Buys
$457,705
Insiders: 2
Sells
$884,525
Insiders: 1
Net
-$426,820
Shares: -10,409
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 15,835 Shares: 26,244
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 0 $0 $0 $0
3-6 0 0 $0 $0 $0
6-9 13,775 17,956 $357,774 $473,913 -$116,138
9-12 2,060 8,288 $99,931 $410,612 -$310,682

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-18 of 18 reporting-owner rows connected to CBIZ, Inc.. Open a relationship link for the CIK-to-CIK filing trail.

Rows
18
Largest Forms 3/4/5 holder
Ware H. Grove
Net 12M change
-$426.82KFull value: -$426,820 · USD · 12-month change
Latest report
02 Nov 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Ware H. Grove C.F.O. $21,154,865 Filing P/S 14 Mar 2025
Chris Spurio President, Financial Services $20,880,105 Mixed 14 Feb 2025
Steven L. Gerard Director $16,522,271 Mixed 25 May 2021
Michael H. DeGroote Director $16,184,111 Mixed 10 May 2024
Sherrill W. Hudson Director $3,717,412 Mixed 31 Oct 2022
Joseph S. DiMartino Director $929,542 Mixed 05 Jun 2023
Benaree Pratt Wiley Director $576,721 -$884,525 -61% Mixed 10 Mar 2026
Brad S. Lakhia Senior Vice President & CFO $0 +$431,650 Mixed 02 Nov 2026
A. Haag Sherman Director $0 Mixed 02 Nov 2026
Rodney A. Young Director $0 +$26,055 Mixed 02 Nov 2026
Michael T. Mangan Chief Accounting Officer $0 Mixed 02 Nov 2026
Michael P. Kouzelos President, Employee Services $0 Mixed 02 Nov 2026
Kathy A. Raffa Director $0 Mixed 02 Nov 2026
Rick L. Burdick Director $0 Mixed 02 Nov 2026
Richard T. Marabito Director $0 Mixed 02 Nov 2026
Gina D. France Director $0 Mixed 02 Nov 2026
Todd J. Slotkin Director $0 Mixed 02 Nov 2026
Jerome P. Grisko Jr. CEO & President, Director $0 Mixed 02 Nov 2026

Recent insider transactions for CBIZ, Inc.

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
Michael T. Mangan CBZ Common Stock Disposed to Issuer -100% -7,633 0 02 Nov 2026 Direct
Brad S. Lakhia CBZ Common Stock Disposed to Issuer -100% -141,020 0 02 Nov 2026 Direct
Michael P. Kouzelos CBZ Common Stock Disposed to Issuer -100% -389,718 0 02 Nov 2026 Direct
Jerome P. Grisko Jr. CBZ Common Stock Disposed to Issuer -100% -62,920 0 02 Nov 2026 By spousal trust
Jerome P. Grisko Jr. CBZ Common Stock Disposed to Issuer -100% -127,652 0 02 Nov 2026 Direct
Jerome P. Grisko Jr. CBZ Common Stock Disposed to Issuer -100% -345,675 0 02 Nov 2026 By SLAT
Jerome P. Grisko Jr. CBZ Common Stock Disposed to Issuer -100% -177,914 0 02 Nov 2026 By 2025 SLAT
Jerome P. Grisko Jr. CBZ Common Stock Disposed to Issuer -100% -383,179 0 02 Nov 2026 By trust
Rodney A. Young CBZ Common Stock Disposed to Issuer -100% -15,361 0 02 Nov 2026 Direct
Rodney A. Young CBZ Stock Option Disposed to Issuer -100% -50,000 0 02 Nov 2026 Direct
Richard T. Marabito CBZ Common Stock Disposed to Issuer -100% -18,887 0 02 Nov 2026 Direct
Richard T. Marabito CBZ Stock Option Disposed to Issuer -100% -50,000 0 02 Nov 2026 Direct
Todd J. Slotkin CBZ Common Stock Disposed to Issuer -100% -57,229 0 02 Nov 2026 Direct
A. Haag Sherman CBZ Common Stock Disposed to Issuer -100% -47,771 0 02 Nov 2026 Direct
Kathy A. Raffa CBZ Common Stock Disposed to Issuer -100% -8,412 0 02 Nov 2026 Direct
Gina D. France CBZ Common Stock Disposed to Issuer -100% -76,086 0 02 Nov 2026 Direct
Rick L. Burdick CBZ Common Stock Disposed to Issuer -100% -179,454 0 02 Nov 2026 By Limited Partnership
Rick L. Burdick CBZ Common Stock Disposed to Issuer -100% -8,412 0 02 Nov 2026 Direct
Jerome P. Grisko Jr. CBZ Common Stock Gift -19.3% -91,400 383,179 23 Oct 2026 By trust
Brad S. Lakhia CBZ Common Stock Tax liability -3.96% -5,813 141,020 17 Sep 2026 Direct
A. Haag Sherman CBZ Common Stock Tax liability -31.9% -22,354 47,771 04 Aug 2026 Direct
A. Haag Sherman CBZ Common Stock Options Exercise 248.4% 50,000 70,125 04 Aug 2026 Direct
A. Haag Sherman CBZ Stock Option Options Exercise -100% -50,000 0 04 Aug 2026 Direct
Kathy A. Raffa CBZ Common Stock Award 256.3% 6,051 8,412 15 May 2026 Direct
Rodney A. Young CBZ Common Stock Award 65% 6,051 15,361 15 May 2026 Direct
Todd J. Slotkin CBZ Common Stock Award 11.8% 6,051 57,229 15 May 2026 Direct
A. Haag Sherman CBZ Common Stock Award 43% 6,051 20,125 15 May 2026 Direct
Richard T. Marabito CBZ Common Stock Award 47.1% 6,051 18,887 15 May 2026 Direct
Gina D. France CBZ Common Stock Award 8.64% 6,051 76,086 15 May 2026 Direct
Rick L. Burdick CBZ Common Stock Award 256.3% 6,051 8,412 15 May 2026 Direct
Brad S. Lakhia CBZ Common Stock Tax liability -1.11% -1,647 146,833 17 Mar 2026 Direct
Brad S. Lakhia CBZ Common Stock Purchase 9.41% $331,719 $25.97 12,775 148,480 13 Mar 2026 Direct
Jerome P. Grisko Jr. CBZ Common Stock Gift 158.7% 38,595 62,920 13 Mar 2026 By spousal trust
Jerome P. Grisko Jr. CBZ Common Stock Gift -8.49% -44,024 474,579 13 Mar 2026 By trust
Jerome P. Grisko Jr. CBZ Common Stock Gift 12.6% 38,595 345,675 13 Mar 2026 By SLAT
Jerome P. Grisko Jr. CBZ Common Stock Gift -20.6% -33,166 127,652 13 Mar 2026 Direct
Rodney A. Young CBZ Common Stock Purchase 12% $26,055 $26.06 1,000 9,310 13 Mar 2026 Direct
Benaree Pratt Wiley CBZ Common Stock Sale -49.9% -$473,913 $26.39 -17,956 18,000 10 Mar 2026 By trust
Michael T. Mangan CBZ Common Stock Award 83% 3,462 7,633 06 Mar 2026 Direct
Michael P. Kouzelos CBZ Common Stock Award 5.91% 21,760 389,718 06 Mar 2026 Direct
Brad S. Lakhia CBZ Common Stock Award 231.5% 93,966 134,550 06 Mar 2026 Direct
Jerome P. Grisko Jr. CBZ Common Stock Award 114.1% 85,709 160,818 06 Mar 2026 Direct
Michael T. Mangan CBZ Common Stock Tax liability -4.2% -183 4,171 14 Feb 2026 Direct
Michael P. Kouzelos CBZ Common Stock Tax liability -0.29% -1,059 367,958 14 Feb 2026 Direct
Jerome P. Grisko Jr. CBZ Common Stock Tax liability -5.66% -4,510 75,109 14 Feb 2026 Direct
Michael P. Kouzelos CBZ Common Stock Tax liability -1.28% -4,766 369,017 11 Feb 2026 Direct
Michael P. Kouzelos CBZ Common Stock Award 2.93% 10,623 373,783 11 Feb 2026 Direct
Michael T. Mangan CBZ Common Stock Tax liability -17.6% -928 4,354 11 Feb 2026 Direct
Michael T. Mangan CBZ Common Stock Award 64.2% 2,065 5,282 11 Feb 2026 Direct
Jerome P. Grisko Jr. CBZ Common Stock Tax liability -15.6% -14,756 79,619 11 Feb 2026 Direct
* marks a reported price that did not pass the local price check.
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