Flammer Martina M.D.

Officer · INSM

As of 2026-09-27, Flammer Martina M.D. has 159 Form 4 transactions on record across 1 company — 71 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Pattern in the record: open-market sales filed in June in multiple years since 2024 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $4.2MIndirect: $0$4.2Mas of 2026-09-27
  • Direct $4.2M
  • Indirect $0
INSMdirect35,580 sh$4.2M

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

INSM · 159 trades
2026-08-06: Sale, 18,278 sh ($2.4M)2026-08-06: Sale, 8,895 sh ($1.1M)2026-08-06: Option exercise, 18,278 sh ($346K)2026-08-06: Option exercise, 8,895 sh ($230K)2026-08-06: Option exercise, 8,895 sh ($0)2026-08-06: Option exercise, 18,278 sh ($0)2026-07-06: Sale, 7,448 sh ($824K)2026-07-06: Sale, 4,854 sh ($529K)2026-07-06: Option exercise, 7,945 sh ($231K)2026-07-06: Option exercise, 4,357 sh ($86K)2026-07-06: Option exercise, 7,945 sh ($0)2026-07-06: Option exercise, 4,357 sh ($0)2026-06-05: Sale, 1,858 sh ($193K)2026-06-03: Sale, 2,566 sh ($262K)2026-05-14: Sale, 10,479 sh ($1.2M)2026-05-13: Sale, 4,470 sh ($504K)2026-05-13: Sale, 3,384 sh ($393K)2026-05-11: Sale, 12,119 sh ($1.2M)2026-05-11: Option exercise, 12,949 sh ($221K)2026-05-11: Sale, 830 sh ($84K)2026-05-11: Option exercise, 12,949 sh ($0)2026-02-05: Sale, 869 sh ($132K)2026-02-03: Sale, 795 sh ($124K)2026-02-02: Option exercise, 7,982 sh ($525K)2026-02-02: Sale, 3,349 sh ($518K)2026-02-02: Sale, 3,042 sh ($473K)2026-02-02: Sale, 928 sh ($142K)2026-02-02: Sale, 563 sh ($86K)2026-02-02: Sale, 100 sh ($16K)2026-02-02: Option exercise, 7,982 sh ($0)2026-01-09: Sale, 1,887 sh ($351K)2026-01-08: Sale, 3,251 sh ($566K)2026-01-08: Sale, 1,660 sh ($289K)2026-01-07: Sale, 1,434 sh ($252K)2026-01-06: Sale, 4,783 sh ($830K)2026-01-06: Sale, 2,830 sh ($493K)2026-01-06: Sale, 1,615 sh ($280K)2026-01-06: Option exercise, 8,570 sh ($227K)2026-01-06: Sale, 957 sh ($167K)2026-01-06: Option exercise, 8,570 sh ($0)2026-01-05: Sale, 3,205 sh ($547K)2026-01-05: Sale, 2,836 sh ($485K)2026-01-05: Sale, 2,799 sh ($474K)2026-01-05: Sale, 1,820 sh ($316K)2026-01-05: Option exercise, 7,945 sh ($231K)2026-01-05: Sale, 702 sh ($123K)2026-01-05: Sale, 655 sh ($114K)2026-01-05: Option exercise, 4,358 sh ($86K)2026-01-05: Sale, 286 sh ($49K)2026-01-05: Option exercise, 4,358 sh ($0)2026-01-05: Option exercise, 7,945 sh ($0)2026-01-02: Award / grant, 31,280 sh ($0)2026-01-02: Award / grant, 5,645 sh2026-01-02: Award / grant, 5,998 sh2026-01-02: Award / grant, 5,645 sh2026-01-02: Award / grant, 5,998 sh2026-01-02: Award / grant, 5,645 sh2026-01-02: Award / grant, 5,998 sh2025-12-01: Sale, 5,886 sh ($1.2M)2025-12-01: Sale, 1,559 sh ($324K)2025-12-01: Sale, 1,450 sh ($299K)2025-12-01: Option exercise, 8,895 sh ($230K)2025-12-01: Option exercise, 8,895 sh ($0)2025-11-11: Sale, 12,224 sh ($2.3M)2025-11-11: Sale, 10,622 sh ($2.0M)2025-11-11: Sale, 5,467 sh ($1.0M)2025-11-11: Sale, 2,913 sh ($556K)2025-11-11: Option exercise, 18,277 sh ($346K)2025-11-11: Option exercise, 12,949 sh ($221K)2025-11-11: Option exercise, 12,949 sh ($0)2025-11-11: Option exercise, 18,277 sh ($0)2025-09-02: Sale, 63,782 sh ($9.3M)2025-09-02: Sale, 34,615 sh ($5.1M)2025-09-02: Sale, 35,245 sh ($5.0M)2025-09-02: Sale, 28,063 sh ($4.0M)2025-09-02: Sale, 19,066 sh ($2.7M)2025-09-02: Sale, 5,877 sh ($835K)2025-09-02: Option exercise, 23,835 sh ($694K)2025-09-02: Option exercise, 36,555 sh ($693K)2025-09-02: Option exercise, 25,710 sh ($680K)2025-09-02: Option exercise, 38,846 sh ($663K)2025-09-02: Option exercise, 13,680 sh ($466K)2025-09-02: Option exercise, 17,790 sh ($460K)2025-09-02: Option exercise, 17,160 sh ($454K)2025-09-02: Option exercise, 13,072 sh ($258K)2025-09-02: Option exercise, 36,555 sh ($0)2025-09-02: Option exercise, 23,835 sh ($0)2025-09-02: Option exercise, 17,790 sh ($0)2025-09-02: Option exercise, 13,072 sh ($0)2025-09-02: Option exercise, 38,846 sh ($0)2025-09-02: Option exercise, 25,710 sh ($0)2025-09-02: Option exercise, 13,680 sh ($0)2025-09-02: Option exercise, 17,160 sh ($0)2025-08-04: Sale, 8,715 sh ($954K)2025-08-04: Option exercise, 8,715 sh ($172K)2025-08-04: Option exercise, 8,715 sh ($0)2025-06-11: Sale, 19,423 sh ($1.8M)2025-06-11: Option exercise, 19,423 sh ($332K)2025-06-11: Option exercise, 19,423 sh ($0)2025-06-10: Sale, 25,740 sh ($2.3M)2025-06-10: Option exercise, 25,740 sh ($681K)2025-06-10: Option exercise, 25,740 sh ($0)2025-06-03: Sale, 1,686 sh ($121K)2025-05-16: Sale, 1,799 sh ($121K)2025-05-15: Sale, 9,925 sh ($650K)2025-05-15: Award / grant, 6,508 sh ($0)2025-05-15: Award / grant, 31,610 sh ($0)2025-05-14: Sale, 1,744 sh ($114K)2025-05-13: Sale, 8,408 sh ($570K)2025-02-10: Sale, 23,010 sh ($1.8M)2025-02-10: Sale, 9,729 sh ($749K)2025-02-10: Sale, 5,089 sh ($399K)2025-02-07: Sale, 60 sh ($5K)2025-02-06: Sale, 33,055 sh ($2.7M)2025-02-05: Award / grant, 70,943 sh ($0)2025-01-10: Sale, 4,801 sh ($305K)2025-01-10: Sale, 1,371 sh ($87K)2025-01-08: Sale, 1,702 sh ($113K)2025-01-08: Award / grant, 31,930 sh ($0)2025-01-08: Award / grant, 6,657 sh2025-01-08: Award / grant, 6,657 sh2025-01-07: Sale, 3,344 sh ($220K)2024-09-16: Sale, 13,436 sh ($1.0M)2024-09-16: Option exercise, 13,436 sh ($457K)2024-09-16: Option exercise, 13,436 sh ($0)2024-09-13: Sale, 26,969 sh ($2.0M)2024-09-13: Option exercise, 26,969 sh ($918K)2024-09-13: Option exercise, 26,969 sh ($0)2024-09-12: Sale, 635 sh ($48K)2024-09-12: Option exercise, 635 sh ($22K)2024-09-12: Option exercise, 635 sh ($0)2024-09-06: Sale, 76,455 sh ($5.4M)2024-09-06: Sale, 63,483 sh ($4.5M)2024-09-06: Option exercise, 34,280 sh ($906K)2024-09-06: Option exercise, 36,555 sh ($693K)2024-09-06: Option exercise, 25,740 sh ($681K)2024-09-06: Sale, 9,064 sh ($658K)2024-09-06: Option exercise, 18,874 sh ($447K)2024-09-06: Option exercise, 14,130 sh ($336K)2024-09-06: Option exercise, 19,423 sh ($332K)2024-09-06: Option exercise, 34,280 sh ($0)2024-09-06: Option exercise, 25,740 sh ($0)2024-09-06: Option exercise, 36,555 sh ($0)2024-09-06: Option exercise, 19,423 sh ($0)2024-09-06: Option exercise, 14,130 sh ($0)2024-09-06: Option exercise, 18,874 sh ($0)2024-06-10: Sale, 21,195 sh ($1.3M)2024-06-10: Option exercise, 21,195 sh ($503K)2024-06-10: Option exercise, 21,195 sh ($0)2024-05-30: Sale, 21,195 sh ($1.2M)2024-05-30: Option exercise, 21,195 sh ($503K)2024-05-30: Option exercise, 21,195 sh ($0)2024-05-28: Sale, 103,806 sh ($5.2M)2024-05-28: Option exercise, 103,806 sh ($2.5M)2024-05-28: Option exercise, 103,806 sh ($0)2024-05-17: Sale, 4,642 sh ($116K)2024-05-14: Sale, 10,640 sh ($271K)2024-05-13: Award / grant, 71,160 sh ($0)2024-05-13: Award / grant, 14,518 sh

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-08-06INSMSale18,278 @ $129.40$2.4M−23.2% of holding60,486Form 4
2026-08-06INSMSale8,895 @ $127.00$1.1M−10.1% of holding78,764Form 4
2026-07-06INSMSale7,448 @ $110.60$824K−11.0% of holding60,486Form 4
2026-07-06INSMSale4,854 @ $109.02$529K−6.7% of holding67,934Form 4
2026-06-05INSMSale1,858 @ $103.78$193K−3.0% of holding60,486Form 4
2026-06-03INSMSale2,566 @ $102.27$262K−4.0% of holding62,344Form 4
2026-05-14INSMSale10,479 @ $117.54$1.2M−13.9% of holding64,910Form 4
2026-05-13INSMSale4,470 @ $112.76$504K−5.4% of holding78,773Form 4
2026-05-13INSMSale3,384 @ $116.18$393K−4.3% of holding75,389Form 4
2026-05-11INSMSale12,119 @ $100.35$1.2M−12.6% of holding84,073Form 4
2026-05-11INSMSale830 @ $101.18$84K−1.0% of holding83,243Form 4
2026-02-05INSMSale869 @ $152.44$132K−1.0% of holding83,243Form 4
2026-02-03INSMSale795 @ $155.77$124K−0.9% of holding84,112Form 4
2026-02-02INSMSale3,349 @ $154.56$518K−3.7% of holding88,049Form 4
2026-02-02INSMSale3,042 @ $155.46$473K−3.5% of holding85,007Form 4
2026-02-02INSMSale928 @ $153.16$142K−1.0% of holding91,398Form 4
2026-02-02INSMSale563 @ $152.06$86K−0.6% of holding92,326Form 4
2026-02-02INSMSale100 @ $156.86$16K−0.1% of holding84,907Form 4
2026-01-09INSMSale1,887 @ $186.19$351K−2.2% of holding84,907Form 4
2026-01-08INSMSale3,251 @ $174.17$566K−3.6% of holding86,794Form 4
2026-01-08INSMSale1,660 @ $173.87$289K−1.8% of holding90,045Form 4
2026-01-07INSMSale1,434 @ $175.84$252K−1.5% of holding91,705Form 4
2026-01-06INSMSale4,783 @ $173.47$830K−4.6% of holding98,541Form 4
2026-01-06INSMSale2,830 @ $174.21$493K−2.9% of holding95,711Form 4
2026-01-06INSMSale1,615 @ $173.33$280K−1.7% of holding93,139Form 4
2026-01-06INSMSale957 @ $175.01$167K−1.0% of holding94,754Form 4
2026-01-05INSMSale3,205 @ $170.61$547K−3.1% of holding101,053Form 4
2026-01-05INSMSale2,836 @ $171.19$485K−2.8% of holding98,217Form 4
2026-01-05INSMSale2,799 @ $169.29$474K−2.6% of holding104,258Form 4
2026-01-05INSMSale1,820 @ $173.45$316K−1.9% of holding96,111Form 4
2026-01-05INSMSale702 @ $175.73$123K−0.7% of holding94,754Form 4
2026-01-05INSMSale655 @ $174.28$114K−0.7% of holding95,456Form 4
2026-01-05INSMSale286 @ $171.92$49K−0.3% of holding97,931Form 4
2025-12-01INSMSale5,886 @ $207.03$1.2M−6.5% of holding84,670Form 4
2025-12-01INSMSale1,559 @ $207.73$324K−1.8% of holding83,111Form 4
2025-12-01INSMSale1,450 @ $205.98$299K−1.6% of holding90,556Form 4
2025-11-11INSMSale12,224 @ $189.36$2.3M−11.2% of holding96,646Form 4
2025-11-11INSMSale10,622 @ $190.33$2.0M−11.0% of holding86,024Form 4
2025-11-11INSMSale5,467 @ $188.38$1.0M−4.8% of holding108,870Form 4
2025-11-11INSMSale2,913 @ $191.04$556K−3.4% of holding83,111Form 4
2025-09-02INSMSale63,782 @ $145.33$9.3M−35.1% of holding117,726Form 4
2025-09-02INSMSale34,615 @ $146.05$5.1M−29.4% of holding83,111Form 4
2025-09-02INSMSale35,245 @ $143.16$5.0M−14.4% of holding209,571Form 4
2025-09-02INSMSale28,063 @ $144.05$4.0M−13.4% of holding181,508Form 4
2025-09-02INSMSale19,066 @ $141.27$2.7M−7.1% of holding250,693Form 4
2025-09-02INSMSale5,877 @ $142.03$835K−2.3% of holding244,816Form 4
2025-08-04INSMSale8,715 @ $109.50$954K−9.5% of holding83,111Form 4
2025-06-11INSMSale19,423 @ $94.50$1.8M−18.9% of holding83,111Form 4
2025-06-10INSMSale25,740 @ $88.64$2.3M−23.6% of holding83,111Form 4
2025-06-03INSMSale1,686 @ $71.50$121K−2.0% of holding83,111Form 4
2025-05-16INSMSale1,799 @ $67.53$121K−2.1% of holding84,797Form 4
2025-05-15INSMSale9,925 @ $65.47$650K−10.3% of holding86,596Form 4
2025-05-14INSMSale1,744 @ $65.61$114K−1.9% of holding90,013Form 4
2025-05-13INSMSale8,408 @ $67.81$570K−8.4% of holding91,757Form 4
2025-02-10INSMSale23,010 @ $79.33$1.8M−18.7% of holding100,165Form 4
2025-02-10INSMSale9,729 @ $77.02$749K−7.1% of holding128,264Form 4
2025-02-10INSMSale5,089 @ $78.36$399K−4.0% of holding123,175Form 4
2025-02-07INSMSale60 @ $79.59$5K−0.0% of holding137,993Form 4
2025-02-06INSMSale33,055 @ $80.90$2.7M−19.3% of holding138,053Form 4
2025-01-10INSMSale4,801 @ $63.62$305K−4.5% of holding101,549Form 4
2025-01-10INSMSale1,371 @ $63.73$87K−1.3% of holding106,350Form 4
2025-01-08INSMSale1,702 @ $66.16$113K−1.7% of holding101,064Form 4
2025-01-07INSMSale3,344 @ $65.91$220K−3.2% of holding102,766Form 4
2024-09-16INSMSale13,436 @ $74.92$1.0M−11.2% of holding106,134Form 4
2024-09-13INSMSale26,969 @ $74.90$2.0M−20.3% of holding106,134Form 4
2024-09-12INSMSale635 @ $74.92$48K−0.6% of holding106,134Form 4
2024-09-06INSMSale76,455 @ $70.90$5.4M−30.0% of holding178,681Form 4
2024-09-06INSMSale63,483 @ $71.43$4.5M−35.5% of holding115,198Form 4
2024-09-06INSMSale9,064 @ $72.61$658K−7.9% of holding106,134Form 4
2024-06-10INSMSale21,195 @ $60.00$1.3M−16.6% of holding106,134Form 4
2024-05-30INSMSale21,195 @ $55.00$1.2M−16.6% of holding106,134Form 4
2024-05-28INSMSale103,806 @ $49.62$5.2M−49.4% of holding106,134Form 4
2024-05-17INSMSale4,642 @ $25.09$116K−4.2% of holding106,134Form 4
2024-05-14INSMSale10,640 @ $25.47$271K−8.8% of holding110,776Form 4
85 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-08-06INSMOption exercise18,27878,764Form 4
2026-08-06INSMOption exercise8,89587,659Form 4
2026-08-06INSMOption exercise8,89535,580Form 4
2026-08-06INSMOption exercise18,27836,555Form 4
2026-07-06INSMOption exercise7,94568,431Form 4
2026-07-06INSMOption exercise4,35772,788Form 4
2026-07-06INSMOption exercise7,94523,835Form 4
2026-07-06INSMOption exercise4,3574,358Form 4
2026-05-11INSMOption exercise12,94996,192Form 4
2026-05-11INSMOption exercise12,9490Form 4
2026-02-02INSMOption exercise7,98292,889Form 4
2026-02-02INSMOption exercise7,98223,948Form 4
2026-01-06INSMOption exercise8,570103,324Form 4
2026-01-06INSMOption exercise8,5700Form 4
2026-01-05INSMOption exercise7,945107,057Form 4
2026-01-05INSMOption exercise4,35899,112Form 4
2026-01-05INSMOption exercise4,3588,715Form 4
2026-01-05INSMOption exercise7,94531,780Form 4
2026-01-02INSMAward / grant31,28031,280Form 4
2026-01-02INSMAward / grant5,64594,754Form 4
2026-01-02INSMAward / grant5,99889,109Form 4
2026-01-02INSMAward / grant5,64594,754Form 4
2026-01-02INSMAward / grant5,99889,109Form 4
2026-01-02INSMAward / grant5,64594,754Form 4
2026-01-02INSMAward / grant5,99889,109Form 4
2025-12-01INSMOption exercise8,89592,006Form 4
2025-12-01INSMOption exercise8,89544,475Form 4
2025-11-11INSMOption exercise18,277114,337Form 4
2025-11-11INSMOption exercise12,94996,060Form 4
2025-11-11INSMOption exercise12,94912,949Form 4
2025-11-11INSMOption exercise18,27754,833Form 4
2025-09-02INSMOption exercise23,835251,969Form 4
2025-09-02INSMOption exercise36,555228,134Form 4
2025-09-02INSMOption exercise25,710139,661Form 4
2025-09-02INSMOption exercise38,846178,507Form 4
2025-09-02INSMOption exercise13,68096,791Form 4
2025-09-02INSMOption exercise17,790269,759Form 4
2025-09-02INSMOption exercise17,160113,951Form 4
2025-09-02INSMOption exercise13,072191,579Form 4
2025-09-02INSMOption exercise36,55573,110Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.