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Insider profile

JANA Partners Management, LP Insider Trading

This page tracks every SEC Form 4 filing since April 2023 by JANA Partners Management, LP: 67 transactions in total, including 25 open-market purchases and 9 sales. Each record is parsed directly from the original filing, with amendments reconciled so a corrected filing never double-counts.

CIK
0001998597
Companies traded
4
Total filings
67
First filing
2023-11-07
Last filing
2026-06-09

Files as JANA Partners Management, LP · SEC EDGAR ↗

Activity summary

The most recent open-market decision was a purchase of 50,000 shares ($2.2M) on April 15, 2026.

Three year balance

Buy and sell value by quarter, Q4 23 to Q2 26. JANA Partners Management, LP has been a net seller across the period shown.

PurchasesSales
Q4 23Q1 24Q2 24Q3 24Q4 24Q1 25Q2 25Q3 25Q4 25$121.8MQ1 26Q2 26

Bars below the rule are sales, above are purchases. Largest quarter on the chart is $121.8M.

Insider insight

JANA Partners Management, LP trades most actively in MRCY, accounting for 13 of the 67 filings on record. The largest single open-market purchase on record is $37.3M in MRCY, filed Feb 2024.

Track record

$121.0M
Total purchased
$258.0M
Total sold
28
19 buys · 9 sales
Net seller
Overall direction

Most active in

MRCY5 buys · 8 salesRPD6 buysTHS4 buys · 1 saleLW4 buys

Avg buy vs sell price

MRCY$30.50→$73.48+140.9%
THS$22.68→$24.48+7.9%

Average prices across open-market transactions in this dataset.

Largest trade: $37.3M in MRCY (Feb 2024) in last 50Filing history: Nov 2023 — Jun 2026Under a 10b5-1 plan: 0%Full history: 67 filings

Transaction History

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

DateInsiderCompanyTypeSharesPriceValueReturn
Jun 9, 2026JANA Partners Management, LPRPD
J
15,208——+45.6% 3m
Apr 15, 2026JANA Partners Management, LPLW
Purchase
50,000$43.19$2.16M+9.7% 3m
Apr 13, 2026JANA Partners Management, LPLW
Purchase
100,000$42.12$4.21M+9.7% 3m
Apr 8, 2026JANA Partners Management, LPLW
Purchase
100,000$41.41$4.14M+12.1% 3m
Apr 7, 2026JANA Partners Management, LPLW
Purchase
136,000$40.89$5.56M+12.1% 3m

45 more transactions hidden

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Companies traded

By number of filings.

MRCY13 filings
RPD6 filings
THS5 filings
LW4 filings

Based on the last 50 filings on file — this insider has a longer history.

Filing cadence

Filings per quarter, this window.

5.0filings / quarter, Q1 24–Q2 26

Busiest: Q1 26 (13 filings)

Quietest: Q1 25 (0 filings)

Based on the last 50 filings on file — this insider has a longer history.

Reading an insider's Form 4 history

Corporate insiders — directors, officers, and holders of more than 10% of a company's stock — must report their trades to the SEC on Form 4 within two business days. Looking at one insider's filings over time shows whether they tend to buy on the open market (a discretionary use of their own money, generally the strongest signal), sell, or simply receive and exercise equity awards as compensation.

The track record above measures how this insider's past open-market purchases performed in the months after each filing. Trades made under a pre-scheduled Rule 10b5-1 plan are flagged because they carry no timing signal. To pull any insider's full history programmatically, see the insider trading API or our guide to reading Form 4 filings.

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Form4API, StockholmNot affiliated with the SEC or EDGAR. Data sourced from public EDGAR filings. Not investment advice.

Scorecard

38%
Buys positive after 3m
-15.1%
Avg return at 3m
-13.8%
Median return at 3m
21
Scored buys
Best buy: LW+12.1% 3m (Apr 2026)Worst buy: RPD-59.4% 3m (Nov 2025)

Absolute post-filing return, not market-adjusted · min. 5 matured open-market buys

See top insiders by track record →

Related insiders

Other insiders filing on MRCY.

Steven RatnerEVP, CHROWilliam L BallhausChairman, President & CEODouglas MunroSVP, CAO