Coherent insider activity
What the executives and directors of Coherent actually did with their own shares, decoded from their SEC Form 4 filings. Each figure says the stretch of time it covers.
−$1.1B
net open-market flow, 12 m
0 open-market buys, 12 m
2.6%
of sale value on 10b5-1 plans, 12 m
658 days since an insider bought, whole record
The tape: three years of insider trades
Open-market buy
Discretionary sale
Planned sale (10b5-1)
Reported-price path
Routine
Every marker sits at the price reported on the Form 4. The line is the monthly median of all prices insiders reported, so the chart needs no market feed; the grey strip is the routine flow (grants, vestings, tax withholding and gifts) that a headline gets wrong by counting it as selling.
The 114 routine events on the chart, as a list
| Date | Insider | Shares |
|---|---|---|
| Sep 11, 2026 | Digirolomo Enrico | 1,279 |
| Aug 28, 2026 | ANDERSON JAMES ROBERT | 43K |
| Aug 28, 2026 | Eng Julie Sheridan | 30K |
| Aug 28, 2026 | Mocciaro Ilaria | 6,235 |
| Aug 28, 2026 | Luther Sherri R | 11K |
| Aug 28, 2026 | Beard Robert P | 7,269 |
| Aug 28, 2026 | Place Jeffrey B. | 3,358 |
| Jul 1, 2026 | Place Jeffrey B. | 2,181 |
| Jun 3, 2026 | ANDERSON JAMES ROBERT | 26K |
| May 11, 2026 | Xia Howard H. | 2,000 |
| Mar 17, 2026 | Xia Howard H. | 4,240 |
| Mar 6, 2026 | Digirolomo Enrico | 5,758 |
| Feb 11, 2026 | CORASANTI JOSEPH J | 279 |
| Feb 11, 2026 | SKAGGS STEPHEN A | 279 |
| Feb 11, 2026 | VIJ SANDEEP | 279 |
| Feb 11, 2026 | SADASIVAM SHAKER | 279 |
| Feb 11, 2026 | Xia Howard H. | 279 |
| Feb 11, 2026 | Dreyer Michael L | 279 |
| Feb 11, 2026 | MOTLEY DAVID L | 279 |
| Feb 11, 2026 | Patrick Elizabeth | 279 |
| Feb 11, 2026 | STERLING MICHELLE M | 279 |
| Feb 11, 2026 | Digirolomo Enrico | 279 |
| Feb 11, 2026 | Hatter Patricia | 279 |
| Feb 11, 2026 | Neal-Graves Lisa | 279 |
| Dec 2, 2025 | Xia Howard H. | 2,000 |
| Nov 28, 2025 | Xia Howard H. | 1,000 |
| Nov 7, 2025 | CORASANTI JOSEPH J | 9,720 |
| Oct 29, 2025 | BARBAROSSA GIOVANNI | 59K |
| Oct 21, 2025 | Beard Robert P | 5,618 |
| Oct 11, 2025 | Luther Sherri R | 19K |
| Aug 28, 2025 | CORASANTI JOSEPH J | 2,272 |
| Aug 28, 2025 | SKAGGS STEPHEN A | 2,272 |
| Aug 28, 2025 | VIJ SANDEEP | 2,272 |
| Aug 28, 2025 | SADASIVAM SHAKER | 2,272 |
| Aug 28, 2025 | BARBAROSSA GIOVANNI | 51K |
| Aug 28, 2025 | PAGLIUCA STEPHEN G | 2,272 |
| Aug 28, 2025 | Xia Howard H. | 2,272 |
| Aug 28, 2025 | Dreyer Michael L | 2,272 |
| Aug 28, 2025 | MOTLEY DAVID L | 2,272 |
| Aug 28, 2025 | Patrick Elizabeth | 2,272 |
| Aug 28, 2025 | STERLING MICHELLE M | 2,272 |
| Aug 28, 2025 | ANDERSON JAMES ROBERT | 68K |
| Aug 28, 2025 | Eng Julie Sheridan | 26K |
| Aug 28, 2025 | Mocciaro Ilaria | 5,142 |
| Aug 28, 2025 | Digirolomo Enrico | 2,272 |
| Aug 28, 2025 | Hatter Patricia | 2,272 |
| Aug 28, 2025 | Luther Sherri R | 16K |
| Aug 28, 2025 | Neal-Graves Lisa | 2,272 |
| Aug 28, 2025 | Beard Robert P | 14K |
| Jun 16, 2025 | Xia Howard H. | 1,000 |
| Jun 11, 2025 | Xia Howard H. | 1,000 |
| Jun 3, 2025 | SADASIVAM SHAKER | 25K |
| Jun 3, 2025 | ANDERSON JAMES ROBERT | 26K |
| May 21, 2025 | Xia Howard H. | 1,000 |
| May 13, 2025 | Koeppen Christopher | 6,154 |
| May 12, 2025 | Xia Howard H. | 2,000 |
| May 9, 2025 | Xia Howard H. | 1,000 |
| Feb 28, 2025 | Eng Julie Sheridan | 13K |
| Feb 28, 2025 | Mocciaro Ilaria | 687 |
| Feb 26, 2025 | Neal-Graves Lisa | 580 |
Where the shares went, last 12 months
Every Form 4 movement decomposed: what flowed in (grants, vested equity, purchases) and what flowed out (tax withholding, plan sales, discretionary sales, gifts). Counted in shares, because grants carry no price.
The chart, in numbers
| Flow | Shares |
|---|---|
| From holdings | 159K |
| Granted | 73K |
| Vested / exercised | 7.8M |
| Withheld for tax | 84K |
| Planned sales (10b5-1) | 164K |
| Discretionary sales | 7.6M |
| Gifts | 3,126 |
| Other out | 254K |
Skin in the game
Directly held shares as reported after each trade, indexed to 100 at the start of the window, up to five years back. Direct holdings only: trust and family-entity positions are per-entity in the filings and do not sum honestly, so this chart refuses to guess. The steps are the trades.
The chart, in numbers
| Insider | Start of the window | Latest reported | Indexed, start = 100 |
|---|---|---|---|
| ANDERSON JAMES ROBERT | 147K | 185K | 125.9 |
| BARBAROSSA GIOVANNI | 173K | 163K | 94.3 |
| CORASANTI JOSEPH J | 64K | 80K | 125 |
| Luther Sherri R | 79K | 71K | 89.6 |
| Xia Howard H. | 36K | 50K | 140.7 |
Who holds what
the 14 largest holdings of 26| Insider | Role | Shares held | Buys 12 m | Sales 12 m | 12 m | Last trade |
|---|---|---|---|---|---|---|
| MATTERA VINCENT D JR Chief Executive Officer Last trade May 15, 2024 | CEO | 665K | – | – | May 15, 2024 | |
| ANDERSON JAMES ROBERT CEO Last trade Dec 2, 2024 | CEO | 197K | – | – | Dec 2, 2024 | |
| BARBAROSSA GIOVANNI EVP, General Management Last trade Nov 6, 2025 | Officer | 163K | – | $18M | net selling over the year: 0 months buying, 2 months selling | Nov 6, 2025 |
| BASHAW WALTER ROBERT II President Last trade Aug 1, 2024 | Officer | 81K | – | – | Aug 1, 2024 | |
| CORASANTI JOSEPH J Last trade Dec 10, 2025 | Director | 80K | – | $4.4M | net selling over the year: 0 months buying, 2 months selling | Dec 10, 2025 |
| Luther Sherri R CFO and Treasurer Last trade Aug 18, 2026 | CFO | 73K | – | $3.6M | net selling over the year: 0 months buying, 5 months selling | Aug 18, 2026 |
| Xia Howard H. Last trade May 11, 2026 | Director | 56K | – | $2.2M | net selling over the year: 0 months buying, 4 months selling | May 11, 2026 |
| Beard Robert P Chief Strategy & Legal Officer Last trade Sep 9, 2026 | Officer | 51K | – | $155K | net selling over the year: 0 months buying, 1 month selling | Sep 9, 2026 |
| Koeppen Christopher EVP of Aerospace & Defense Last trade Jul 17, 2025 | Officer | 42K | – | – | Jul 17, 2025 | |
| SADASIVAM SHAKER Last trade Jun 3, 2025 | Director | 41K | – | – | Jun 3, 2025 | |
| Eng Julie Sheridan Chief Technology Officer Last trade Sep 1, 2026 | Officer | 41K | – | $4.8M | net selling over the year: 0 months buying, 3 months selling | Sep 1, 2026 |
| Martucci Richard J. Interim CFO & Treasurer Last trade May 10, 2024 | CFO | 40K | – | – | May 10, 2024 | |
| Basso Ronald Chief Legal & Compliance Off. Last trade Sep 13, 2024 | Officer | 39K | – | – | Sep 13, 2024 | |
| MOTLEY DAVID L Last trade Jun 14, 2023 | Director | 26K | – | – | Jun 14, 2023 |
Open-market trade log
the 60 most recent of 1,134| Date | Insider | Type | Shares | Price | Value | Since trade | Filed |
|---|---|---|---|---|---|---|---|
| Sep 11, 2026 | Digirolomo Enrico (Director) 5,315 shares $305.99 +0.0% since trade filed Sep 15, 2026 | Discretionary sale | 5,315 | $305.99 | $1.6M | +0.0% | Sep 15, 2026 |
| Sep 9, 2026 | Beard Robert P (Officer) 500 shares $309.32 −1.1% since trade filed Sep 11, 2026 | Discretionary sale | 500 | $309.32 | $155K | −1.1% | Sep 11, 2026 |
| Sep 2, 2026 | Neal-Graves Lisa (Director) 2,200 shares $268.42 +14.0% since trade filed Sep 4, 2026 | Discretionary sale | 2,200 | $268.42 | $591K | +14.0% | Sep 4, 2026 |
| Sep 1, 2026 | Eng Julie Sheridan (Officer) 6,030 shares $270.69 +13.0% since trade filed Sep 1, 2026 | Planned sale (10b5-1) | 6,030 | $270.69 | $1.6M | +13.0% | Sep 1, 2026 |
| Aug 31, 2026 | SKAGGS STEPHEN A (Director) 2,272 shares $276.88 +10.5% since trade filed Sep 2, 2026 | Planned sale (10b5-1) | 2,272 | $276.88 | $629K | +10.5% | Sep 2, 2026 |
| Aug 31, 2026 | Eng Julie Sheridan (Officer) 7,047 shares $276.83 +10.5% since trade filed Sep 1, 2026 | Planned sale (10b5-1) | 7,047 | $276.83 | $2.0M | +10.5% | Sep 1, 2026 |
| Aug 31, 2026 | Digirolomo Enrico (Director) 2,272 shares $276.85 +10.5% since trade filed Sep 2, 2026 | Planned sale (10b5-1) | 2,272 | $276.85 | $629K | +10.5% | Sep 2, 2026 |
| Aug 18, 2026 | Luther Sherri R (CFO) 3,000 shares $324.00 −5.6% since trade filed Aug 20, 2026 | Planned sale (10b5-1) | 3,000 | $324.00 | $972K | −5.6% | Aug 20, 2026 |
| Jul 22, 2026 | Luther Sherri R (CFO) 1,000 shares $306.68 −0.2% since trade filed Jul 24, 2026 | Planned sale (10b5-1) | 1,000 | $306.68 | $307K | −0.2% | Jul 24, 2026 |
| May 12, 2026 | Luther Sherri R (CFO) 2,000 shares $372.96 −18.0% since trade filed May 13, 2026 | Planned sale (10b5-1) | 2,000 | $372.96 | $746K | −18.0% | May 13, 2026 |
| May 11, 2026 | Xia Howard H. (Director) 500 shares $344.00 −11.1% since trade filed May 13, 2026 | Discretionary sale | 500 | $344.00 | $172K | −11.1% | May 13, 2026 |
| May 11, 2026 | Xia Howard H. (Director) 500 shares $348.00 −12.1% since trade filed May 13, 2026 | Discretionary sale | 500 | $348.00 | $174K | −12.1% | May 13, 2026 |
| May 11, 2026 | Xia Howard H. (Director) 500 shares $358.00 −14.5% since trade filed May 13, 2026 | Discretionary sale | 500 | $358.00 | $179K | −14.5% | May 13, 2026 |
| May 11, 2026 | Xia Howard H. (Director) 500 shares $368.00 −16.9% since trade filed May 13, 2026 | Discretionary sale | 500 | $368.00 | $184K | −16.9% | May 13, 2026 |
| Apr 22, 2026 | Luther Sherri R (CFO) 2,000 shares $351.00 −12.8% since trade filed Apr 24, 2026 | Planned sale (10b5-1) | 2,000 | $351.00 | $702K | −12.8% | Apr 24, 2026 |
| Mar 17, 2026 | Xia Howard H. (Director) 1,000 shares $244.46 +25.2% since trade filed Mar 18, 2026 | Discretionary sale | 1,000 | $244.46 | $244K | +25.2% | Mar 18, 2026 |
| Mar 17, 2026 | Xia Howard H. (Director) 1,000 shares $245.57 +24.6% since trade filed Mar 18, 2026 | Discretionary sale | 1,000 | $245.57 | $246K | +24.6% | Mar 18, 2026 |
| Mar 17, 2026 | Xia Howard H. (Director) 1,240 shares $236.22 +29.5% since trade filed Mar 18, 2026 | Discretionary sale | 1,240 | $236.22 | $293K | +29.5% | Mar 18, 2026 |
| Mar 16, 2026 | Xia Howard H. (Director) 1,000 shares $258.00 +18.6% since trade filed Mar 18, 2026 | Discretionary sale | 1,000 | $258.00 | $258K | +18.6% | Mar 18, 2026 |
| Mar 10, 2026 | Eng Julie Sheridan (Officer) 1,454 shares $258.18 +18.5% since trade filed Mar 12, 2026 | Planned sale (10b5-1) | 1,454 | $258.18 | $375K | +18.5% | Mar 12, 2026 |
| Mar 9, 2026 | SKAGGS STEPHEN A (Director) 3,523 shares $243.13 +25.9% since trade filed Mar 11, 2026 | Planned sale (10b5-1) | 3,523 | $243.13 | $857K | +25.9% | Mar 11, 2026 |
| Mar 6, 2026 | Digirolomo Enrico (Director) 3,911 shares $241.50 +26.7% since trade filed Sep 2, 2026 late | Discretionary sale | 3,911 | $241.50 | $945K | +26.7% | Sep 2, 2026 late |
| Mar 2, 2026 | Eng Julie Sheridan (Officer) 2,792 shares $291.42 +5.0% since trade filed Mar 4, 2026 | Planned sale (10b5-1) | 2,792 | $291.42 | $814K | +5.0% | Mar 4, 2026 |
| Feb 12, 2026 | Luther Sherri R (CFO) 4,000 shares $217.74 +40.5% since trade filed Feb 17, 2026 | Planned sale (10b5-1) | 4,000 | $217.74 | $871K | +40.5% | Feb 17, 2026 |
| Dec 10, 2025 | CORASANTI JOSEPH J (Director) 15K shares $196.74 +55.5% since trade filed Dec 12, 2025 | Discretionary sale | 15K | $196.74 | $3.0M | +55.5% | Dec 12, 2025 |
| Dec 3, 2025 | STERLING MICHELLE M (Director) 2,000 shares $164.51 +86.0% since trade filed Dec 3, 2025 | Discretionary sale | 2,000 | $164.51 | $329K | +86.0% | Dec 3, 2025 |
| Dec 2, 2025 | Xia Howard H. (Director) 1,000 shares $168.00 +82.1% since trade filed Dec 3, 2025 | Discretionary sale | 1,000 | $168.00 | $168K | +82.1% | Dec 3, 2025 |
| Dec 2, 2025 | Xia Howard H. (Director) 1,000 shares $172.00 +77.9% since trade filed Dec 3, 2025 | Discretionary sale | 1,000 | $172.00 | $172K | +77.9% | Dec 3, 2025 |
| Dec 1, 2025 | Mocciaro Ilaria (Officer) 1,377 shares $162.71 +88.1% since trade filed Dec 3, 2025 | Discretionary sale | 1,377 | $162.71 | $224K | +88.1% | Dec 3, 2025 |
| Nov 28, 2025 | Xia Howard H. (Director) 1,000 shares $158.36 +93.2% since trade filed Dec 1, 2025 | Discretionary sale | 1,000 | $158.36 | $158K | +93.2% | Dec 1, 2025 |
| Nov 21, 2025 | Digirolomo Enrico (Director) 2,831 shares $134.85 +126.9% since trade filed Nov 25, 2025 | Discretionary sale | 2,831 | $134.85 | $382K | +126.9% | Nov 25, 2025 |
| Nov 20, 2025 | SKAGGS STEPHEN A (Director) 2,000 shares $150.00 +104.0% since trade filed Nov 21, 2025 | Planned sale (10b5-1) | 2,000 | $150.00 | $300K | +104.0% | Nov 21, 2025 |
| Nov 14, 2025 | Dreyer Michael L (Director) 12K shares $144.88 +111.2% since trade filed Nov 17, 2025 | Discretionary sale | 12K | $144.88 | $1.7M | +111.2% | Nov 17, 2025 |
| Nov 7, 2025 | BAIN CAPITAL INVESTORS LLC (10% owner) 7.5M shares $143.37 +113.4% since trade filed Nov 12, 2025 | Discretionary sale | 7.5M | $143.37 | $1.1B | +113.4% | Nov 12, 2025 |
| Nov 7, 2025 | CORASANTI JOSEPH J (Director) 9,720 shares $151.25 +102.3% since trade filed Nov 12, 2025 | Discretionary sale | 9,720 | $151.25 | $1.5M | +102.3% | Nov 12, 2025 |
| Nov 6, 2025 | BARBAROSSA GIOVANNI (Officer) 61K shares $160.00 +91.2% since trade filed Nov 10, 2025 | Planned sale (10b5-1) | 61K | $160.00 | $9.7M | +91.2% | Nov 10, 2025 |
| Oct 29, 2025 | SKAGGS STEPHEN A (Director) 2,000 shares $140.00 +118.6% since trade filed Oct 31, 2025 | Planned sale (10b5-1) | 2,000 | $140.00 | $280K | +118.6% | Oct 31, 2025 |
| Oct 29, 2025 | BARBAROSSA GIOVANNI (Officer) 12K shares $141.10 +116.9% since trade filed Oct 31, 2025 | Planned sale (10b5-1) | 12K | $141.10 | $1.7M | +116.9% | Oct 31, 2025 |
| Oct 29, 2025 | BARBAROSSA GIOVANNI (Officer) 48K shares $140.46 +117.9% since trade filed Oct 31, 2025 | Planned sale (10b5-1) | 48K | $140.46 | $6.7M | +117.9% | Oct 31, 2025 |
| Oct 24, 2025 | SKAGGS STEPHEN A (Director) 2,000 shares $130.00 +135.4% since trade filed Oct 28, 2025 | Planned sale (10b5-1) | 2,000 | $130.00 | $260K | +135.4% | Oct 28, 2025 |
| Aug 29, 2025 | Eng Julie Sheridan (Officer) 200 shares $93.54 +227.1% since trade filed Sep 2, 2025 | Discretionary sale | 200 | $93.54 | $19K | +227.1% | Sep 2, 2025 |
| Aug 29, 2025 | Eng Julie Sheridan (Officer) 300 shares $92.66 +230.2% since trade filed Sep 2, 2025 | Discretionary sale | 300 | $92.66 | $28K | +230.2% | Sep 2, 2025 |
| Aug 29, 2025 | Eng Julie Sheridan (Officer) 1,308 shares $91.06 +236.0% since trade filed Sep 2, 2025 | Discretionary sale | 1,308 | $91.06 | $119K | +236.0% | Sep 2, 2025 |
| Aug 29, 2025 | Eng Julie Sheridan (Officer) 5,328 shares $90.36 +238.6% since trade filed Sep 2, 2025 | Discretionary sale | 5,328 | $90.36 | $481K | +238.6% | Sep 2, 2025 |
| Aug 13, 2025 | SKAGGS STEPHEN A (Director) 2,000 shares $122.23 +150.3% since trade filed Aug 14, 2025 | Planned sale (10b5-1) | 2,000 | $122.23 | $244K | +150.3% | Aug 14, 2025 |
| Jul 17, 2025 | Koeppen Christopher (Officer) 3,100 shares $100.00 +206.0% since trade filed Jul 18, 2025 | Planned sale (10b5-1) | 3,100 | $100.00 | $310K | +206.0% | Jul 18, 2025 |
| Jul 16, 2025 | Koeppen Christopher (Officer) 500 shares $94.59 +223.5% since trade filed Jul 18, 2025 | Planned sale (10b5-1) | 500 | $94.59 | $47K | +223.5% | Jul 18, 2025 |
| Jul 16, 2025 | Koeppen Christopher (Officer) 1,162 shares $96.91 +215.8% since trade filed Jul 18, 2025 | Planned sale (10b5-1) | 1,162 | $96.91 | $113K | +215.8% | Jul 18, 2025 |
| Jul 16, 2025 | Koeppen Christopher (Officer) 1,196 shares $97.80 +212.9% since trade filed Jul 18, 2025 | Planned sale (10b5-1) | 1,196 | $97.80 | $117K | +212.9% | Jul 18, 2025 |
| Jul 16, 2025 | Koeppen Christopher (Officer) 2,600 shares $95.99 +218.8% since trade filed Jul 18, 2025 | Planned sale (10b5-1) | 2,600 | $95.99 | $250K | +218.8% | Jul 18, 2025 |
| Jun 16, 2025 | Xia Howard H. (Director) 1,000 shares $80.88 +278.3% since trade filed Jun 16, 2025 | Discretionary sale | 1,000 | $80.88 | $81K | +278.3% | Jun 16, 2025 |
| Jun 11, 2025 | Xia Howard H. (Director) 1,000 shares $83.00 +268.7% since trade filed Jun 13, 2025 | Discretionary sale | 1,000 | $83.00 | $83K | +268.7% | Jun 13, 2025 |
| Jun 3, 2025 | SADASIVAM SHAKER (Director) 29K shares $80.00 +282.5% since trade filed Jun 5, 2025 | Discretionary sale | 29K | $80.00 | $2.3M | +282.5% | Jun 5, 2025 |
| May 28, 2025 | Neal-Graves Lisa (Director) 1,200 shares $79.65 +284.2% since trade filed May 29, 2025 | Discretionary sale | 1,200 | $79.65 | $96K | +284.2% | May 29, 2025 |
| May 21, 2025 | Xia Howard H. (Director) 1,000 shares $81.00 +277.8% since trade filed May 23, 2025 | Discretionary sale | 1,000 | $81.00 | $81K | +277.8% | May 23, 2025 |
| May 13, 2025 | Koeppen Christopher (Officer) 2,545 shares $80.00 +282.5% since trade filed May 14, 2025 | Planned sale (10b5-1) | 2,545 | $80.00 | $204K | +282.5% | May 14, 2025 |
| May 13, 2025 | Koeppen Christopher (Officer) 2,581 shares $80.00 +282.5% since trade filed May 14, 2025 | Planned sale (10b5-1) | 2,581 | $80.00 | $206K | +282.5% | May 14, 2025 |
| May 13, 2025 | Koeppen Christopher (Officer) 6,154 shares $80.00 +282.5% since trade filed May 14, 2025 | Planned sale (10b5-1) | 6,154 | $80.00 | $492K | +282.5% | May 14, 2025 |
| May 12, 2025 | Xia Howard H. (Director) 1,000 shares $76.84 +298.2% since trade filed May 12, 2025 | Discretionary sale | 1,000 | $76.84 | $77K | +298.2% | May 12, 2025 |
| May 12, 2025 | Xia Howard H. (Director) 1,000 shares $78.00 +292.3% since trade filed May 12, 2025 | Discretionary sale | 1,000 | $78.00 | $78K | +292.3% | May 12, 2025 |
“Since trade” compares with the latest insider-implied price, not a market quote: these pages are built from filings alone. A role here is the one on that day's Form 4, so somebody promoted since appears under both titles.
Filing hygiene
170 Forms 4, 3 years
1 filed late
2 amendments
1.6 avg. days to file
How to read this
A Form 4 transaction code decides everything. P is an open-market purchase and S an open-market sale; those two are the only codes where an insider chose to trade. A is a grant, M an option exercise or vesting, F shares withheld to cover tax, G a gift. Most “insiders dumped billions” headlines are code F and M mechanics.
Sales flagged 10b5-1 run on a plan the insider adopted in advance; since 2023 every Form 4 carries that flag. Buys have historically predicted returns, sales mostly have not, and this page states filings, not advice.