SEC ownership of EnerSys

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001289308.

Comparable stake leader

BlackRock, Inc.

Disclosed value leader

BlackRock, Inc.

Comparable rows

50/50

Latest evidence

16 Jul 2026

Top shareholders Insider holders Latest transactions
Public ticker
ENS on NYSE
Parsed ownership sources
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
50 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
16 Jul 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0001289308
Issuer location
Reading, PA

Ownership snapshot

Top shareholders of EnerSys (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
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
16 Jul 2026
13F 13D/G 3/4/5 Lead comparable stake: 12% 13D/G row: BlackRock, Inc. Showing 1-8 of 50 holder rows.

Quick read

BlackRock, Inc. leads the comparable SEC ownership view at 12%.

50 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 BlackRock, Inc.'s linked filing trail.
Comparable ownership Top 5
BlackRock, Inc. 12%
VANGUARD PORTFOLIO MANAGEMENT LLC 6.5%
VANGUARD CAPITAL MANAGEMENT LLC 5.2%
Paul J. Tufano 0.14%
Howard I. Hoffen 0.13%

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
BlackRock, Inc.
13F 13D/G
Company
13F 13D/G
12%
from 13D/G
$881,837,959
5,076,203 shares
 — 31 Mar 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
13D/G 13F
Vanguard Portfolio Management · Company
13D/G 13F
6.5%
$415,645,946
2,392,620 shares
 $0 31 Mar 2026
VANGUARD CAPITAL MANAGEMENT LLC
13D/G 13F
Vanguard Capital Management · Company
13D/G 13F
5.2%
$336,129,786
1,934,894 shares
 $0 31 Mar 2026
Paul J. Tufano
3/4/5
Director
3/4/5
0.14%
$11,875,265
50,788 shares
 — 16 Jul 2026
Howard I. Hoffen
3/4/5
Director
3/4/5
0.13%
$11,158,484
47,723 shares
 — 02 Jul 2026
Ronald P. Vargo
3/4/5
Director
3/4/5
0.1%
$8,307,173
35,528 shares
 — 02 Jul 2026
Steven M. Fludder
3/4/5
Director
3/4/5
0.06%
$4,812,040
20,580 shares
 — 02 Jul 2026
Caroline Chan
3/4/5
Director
3/4/5
0.04%
$3,673,763
15,712 shares
 — 02 Jul 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: -$990,410.

Buys
$24,675
Insiders: 1
Sells
$1,015,085
Insiders: 1
Net
-$990,410
Shares: -6,594
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 108 Shares: 6,702
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 108 0 $24,675 $0 +$24,675
3-6 0 0 $0 $0 $0
6-9 0 6,702 $0 $1,015,085 -$1,015,085
9-12 0 0 $0 $0 $0

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 23 reporting-owner rows connected to EnerSys. Open a relationship link for the CIK-to-CIK filing trail.

Rows
23
Largest Forms 3/4/5 holder
Shawn M. O'Connell
Net 12M change
-$990,410
Latest report
16 Jul 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Shawn M. O'Connell President and CEO $16,737,403 Median 02 Jul 2026
Andrea J. Funk EVP and CFO $13,196,160 +$24,675 +0.19% Median 02 Jul 2026
Paul J. Tufano Director $11,875,265 Median 16 Jul 2026
Howard I. Hoffen Director $11,158,484 Median 02 Jul 2026
Katsaros Arthur T. Director $11,088,528 Mixed 12 Jul 2024
Michael J. Schmidtlein Executive Vice President & CFO $10,265,743 Mixed 25 Mar 2022
Ronald P. Vargo Director $8,307,173 Median 02 Jul 2026
David M. Shaffer Ceo $7,937,273 Mixed 28 Mar 2025
Chad C. Uplinger President Industrial Mobility $5,557,520 -$1,015,085 -15% Median 02 Jul 2026
Keith D. Fisher Pres. Network & Infrastructure $5,306,440 Median 02 Jul 2026
Mark E. Matthews CTO and Pres. Precision Power $4,914,649 Median 02 Jul 2026
Steven M. Fludder Director $4,812,040 Median 02 Jul 2026
Robert Magnus Director $4,157,250 Mixed 28 Jun 2024
Caroline Chan Director $3,673,763 Median 02 Jul 2026
Hwan-Yoon Chung Director $3,644,448 Mixed 28 Jun 2024
Rudolph W. Wynter Director $3,515,488 Median 16 Jul 2026
Kerry M. Kane SVP, Corp Controller & PAO $2,793,001 Mixed 30 Dec 2022
Joern Tinnemeyer Sr. VP & CTO $2,543,413 Mixed 27 Dec 2024
Tamara Morytko Director $2,416,065 Median 16 Jul 2026
Andrew M. Zogby Pres. Energy Systems Global $2,122,718 Mixed 29 Sep 2023

Recent insider transactions for EnerSys

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
Lauren Knausenberger ENS Common Stock Award 2.96% 162 5,632 16 Jul 2026 Direct
Rudolph W. Wynter ENS Common Stock Award 1.33% 198 15,035 16 Jul 2026 Direct
Tamara Morytko ENS Common Stock Award 1.68% 171 10,333 16 Jul 2026 Direct
David C. Habiger ENS Common Stock Award 2.8% 171 6,269 16 Jul 2026 Direct
Paul J. Tufano ENS Common Stock Award 0.53% 268 50,788 16 Jul 2026 Direct
Lauren Knausenberger ENS Common Stock Award 0.13% 6.94 5,470 02 Jul 2026 Direct
Rudolph W. Wynter ENS Common Stock Award 0.13% 18.84 14,838 02 Jul 2026 Direct
Caroline Chan ENS Common Stock Award 0.13% 19.95 15,712 02 Jul 2026 Direct
Tamara Morytko ENS Common Stock Award 0.13% 12.91 10,163 02 Jul 2026 Direct
Ronald P. Vargo ENS Common Stock Award 0.13% 45.1 35,528 02 Jul 2026 Direct
David C. Habiger ENS Common Stock Award 0.13% 7.73 6,099 02 Jul 2026 Direct
Howard I. Hoffen ENS Common Stock Award 0.13% 60.58 47,723 02 Jul 2026 Direct
Steven M. Fludder ENS Common Stock Award 0.13% 26.13 20,580 02 Jul 2026 Direct
Paul J. Tufano ENS Common Stock Award 0.13% 64.13 50,520 02 Jul 2026 Direct
Andrea J. Funk ENS Common Stock Award 0.07% 41.31 56,437 02 Jul 2026 Direct
Mark E. Matthews ENS Common Stock Award 0.06% 12.96 21,019 02 Jul 2026 Direct
Shawn M. O'Connell ENS Common Stock Award 0.06% 43.49 71,582 02 Jul 2026 Direct
Keith D. Fisher ENS Common Stock Award 0.1% 21.57 22,695 02 Jul 2026 Direct
Chad C. Uplinger ENS Common Stock Award 0.06% 13.39 23,768 02 Jul 2026 Direct
Andrea J. Funk ENS Common Stock Purchase 0.19% $24,675 $228.47 108 56,396 29 May 2026 Direct
Keith D. Fisher ENS Common Stock Award 13.1% 3,019 26,013 28 May 2026 Direct
Andrea J. Funk ENS Common Stock Tax liability -3.52% -2,051 56,288 23 May 2026 Direct
Lauren Knausenberger ENS Common Stock Award 3.08% 163 5,463 13 Apr 2026 Direct
David C. Habiger ENS Common Stock Award 2.89% 171 6,091 13 Apr 2026 Direct
Tamara Morytko ENS Common Stock Award 1.71% 171 10,150 13 Apr 2026 Direct
Rudolph W. Wynter ENS Common Stock Award 1.36% 199 14,819 13 Apr 2026 Direct
Paul J. Tufano ENS Common Stock Award 0.53% 268 50,456 13 Apr 2026 Direct
Keith D. Fisher ENS Common Stock Award 0.11% 25.07 22,994 27 Mar 2026 Direct
Chad C. Uplinger ENS Common Stock Award 0.08% 18.93 23,754 27 Mar 2026 Direct
Mark E. Matthews ENS Common Stock Award 0.09% 18.32 21,005 27 Mar 2026 Direct
Andrea J. Funk ENS Common Stock Award 0.11% 66.07 58,339 27 Mar 2026 Direct
Shawn M. O'Connell ENS Common Stock Award 0.09% 61.47 71,539 27 Mar 2026 Direct
David C. Habiger ENS Common Stock Award 0.15% 9.03 5,920 27 Mar 2026 Direct
Lauren Knausenberger ENS Common Stock Award 0.15% 8.11 5,300 27 Mar 2026 Direct
Tamara Morytko ENS Common Stock Award 0.15% 15.27 9,978 27 Mar 2026 Direct
Rudolph W. Wynter ENS Common Stock Award 0.15% 22.36 14,620 27 Mar 2026 Direct
Caroline Chan ENS Common Stock Award 0.15% 24 15,692 27 Mar 2026 Direct
Ronald P. Vargo ENS Common Stock Award 0.15% 54.27 35,483 27 Mar 2026 Direct
Steven M. Fludder ENS Common Stock Award 0.15% 31.44 20,554 27 Mar 2026 Direct
Howard I. Hoffen ENS Common Stock Award 0.15% 72.9 47,663 27 Mar 2026 Direct
Paul J. Tufano ENS Common Stock Award 0.15% 76.76 50,188 27 Mar 2026 Direct
Keith D. Fisher ENS Common Stock Tax liability -14.5% -3,338 19,630 07 Feb 2026 Direct
Paul J. Tufano ENS Common Stock Award 0.63% 313 50,114 15 Jan 2026 Direct
David C. Habiger ENS Common Stock Award 3.5% 200 5,910 15 Jan 2026 Direct
Ronald P. Vargo ENS Common Stock Award 0.14% 48 35,435 15 Jan 2026 Direct
Rudolph W. Wynter ENS Common Stock Award 1.61% 231 14,599 15 Jan 2026 Direct
Lauren Knausenberger ENS Common Stock Award 3.7% 189 5,293 15 Jan 2026 Direct
Tamara Morytko ENS Common Stock Award 2.05% 200 9,968 15 Jan 2026 Direct
Keith D. Fisher ENS Common Stock Award 0.18% 40.87 22,968 26 Dec 2025 Direct
Chad C. Uplinger ENS Common Stock Award 0.09% 20.66 23,734 26 Dec 2025 Direct
* marks a reported price that did not pass the local price check.
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